Edelbrock Carburetors - The Good, The Bad and The Ugly

[@jeffrey4547]

i pulled a edlebrock carb off my engine replaced it with a holley and it came alive both where new carbs quadro jet is a way better carb plus u can drill it out easy to work on just u must reseat the fuel bowl on the lead plugs or if it leaks at all it will affect the secondaries. the edlebrock i feel is the worse carb and the cheapest carb on the market junk not worth the money . u do know u will get better performance out of a quadro jet then a edlebrock carb and u can drill it out to 1150 cmf's . i have a bunch of edlebrock carbs most i got from rigs that they put one on and when i get it, it comes off and goes in a pile

[@MuscleCarSolutions]

Send em my way! I’ll take them all.

[@jeffjohnon4223]

You obviously don't know how to tune one.

[@jeffrey4547]

@@Ratridez i guess the dyno tune had no idea what it was doing but it worked good on a Quadro jet or a Holley it seem to gain hp with those carbs but could it be that it is the cheapest carb on the market plus i am a G.M. certified mechanic and ben building cars for over 45 years i think i know my carbs . y don't u see them on the drag strip mite because they suck. i will take a quadro jet against a eldlebrock any day of the week try using a quadro jet carb off a 454 which is a 600 or u can drill them out all the way up to a 1150 means u know so much about carbs

[@lau12342]

@@jeffrey4547 1/4 mile, racing, dyno you go with Holley. For normal street cruiser, resto, muscle you go with original carb or Carter/Edelbrock 👍

[@BPattB]

@@MuscleCarSolutions lol can get the left over parts???

[@pulloutking6468]

My solution I used for your “ugly” was getting the Edelbrock part# 8128. Remove the feed plug on the driver side of the Edelbrock carb and install the part# 8128 dual feed fuel line. It keeps both bowls equally full at all times. So it doesn’t matter if you make hard turns or go off roading like me, after I installed this dual fuel feed line those problems went away.

[@Texasmule]

I did the same thing, my drive way has a hill that I have to drive around and it leans my truck to the left Which bogged it down. I tried a DP holley and it worked but I sat there for hours trying to get the dam thing to idle correctly and it was really rough when I finally found a sweet spot. My cam was already super choppy and it made it sound really disturbing so I took it off and just hooked another line to the avs2 and fixed everything, had to increase jetting but I haven't had a problem since then

[@slowcountryboy476]

I just asked why a "Y" could be centered to feed both sides and read your comment. Maybe even set the floats so both bowls hold more fuel. So I am not the only one with your thoughts; there is another similar comment about the same technique that cured the problem. Hey, and I bet we are all just carpenters who happen to see details and figure it out right. My solution for fuel sloshing around while "rock bouncing" is to extend the breather inlets. On a Motorcraft 2150 a peace of tubing can be rolled like a tubing from a still above the carb, but below the air cleaner lid with holes drilled on the top coil for breathing. That keeps fuel from sloshing into the venturis and flooding the engine. My concern against EFI is the Goodyear ballon "accidentally" detonating high above the dirt and taking out an EFI and other electronic stuff. It will not take out mechanical stuff, such as a carb. Look at how that choo-choo "accidentally" derailed and I bet more "accidental chemical derailments will occur. Too many accidentals to think something ain't up. Be safe and keep your powder dry.

[@tonymayhew191]

I got fed up with trying to learn about carburation on my own when I was in my early twenties, so I bought a book from a guy named Doug Roe. This guy was employed at the Rochester Quadrajet factory for General Motors and then I started learning about Quadrajet carburators! I highly recommend this book of his knowledge this man filled the book from front to back where a second grader could start rebuilding carburators! But the guy on a webber carburator video I watched last year said it best! That screw on the side for the throttle plates has no tuning purpose whatsoever! That it needs to be adjusted to where the throttle plates don't come back and contact the bore wall if it were to be snapped back and then released! If you go gettin crazy and and try using the adjustment to raise your idle you will get into the off idle circuit and it will fall on it's face when you punch the throttle from a dead stop! 😉

[@Gary-Anglebrandt]

He's right! That book is great. It's on my shelf! I ended up going with Edelbrock but that book beckons to me sometimes -- "get back to messin' with the Rochester, it's worth it..."

[@tsmith578]

I hear you talk about heatsoak on carburetors , particularly Edelbrock . one helpful thing that I found is besides using a phenolic spacer , is to also use a spacer on the air cleaner , that is hood space alows for it . I installed a Edelbrock phenolic spacer which is actually only about a 1/4 " thick , and I also installed a 1" tall spacer between my air cleaner and carburetor in my truck , and it really helped it out a lot with heatsoak , because the extra space lets the heat disapate from the carburetor instead of the air cleaner just holding the engine heat down over top of the carburetor . and it also has a smoother idle on hot days . Tim from Wisconsin.

[@chuckroast5735]

I can not overstate how important proper fuel pressure is for proper tuning of your Edelbrock carburetor. My suggestion check your pressure, add a regulator if necessary before you even start tuning. 5.5 psig seem to be optimal for my AVS.

[@bobeaseshop9389]

I run two Edelbrocks one on a Pontiac 389 (1964 Bonneville) & one on a GM 305 (a 1978 motor in a 1957 GMC) and both are great. I do not ever push anything hard so in my world these are near perfect. It did take time to get the needles, springs and jets within my needs. Early days it was run it and look at the plugs but now I use an air/fuel gauge. Not hard to fit and worth the time and makes tuning so very much easier. I have some videos on this but overall there are more detailed ones. I have worked with Holley carbs but don't like them as much as Edelbrocks. I run a Weber on a 1970 Triumph Spitfire and loved learning about them (a sync not progressive) and there the air/fuel gauge was a must. Just wanted to toss that in. If anyone out there wants to add an air/fuel gauge be sure to shop around and get the best quality you can. My first one didn't last but a few days.... just shop and you'll see. Hope that helps. Bobby

[@Tk-ou9ec]

Great video mate. I run an edelbrock AVS 500 on my mild 318,just a mild cam with edelbrock performer intake,full exhaust and hei ignition. The heads and bottom end are still stock. It’s a 1980 Chrysler. I had mine professionally tuned and in the 4 years it’s been on my car it still runs perfect! It’s not an everyday car either,just a toy. I’ve been told by some that the 500 is to small for my combo but I think it runs great,never given me a drama and on the Dyno it made 214 hp at the tyres in which I believe is good for an otherwise stock 318. I changed my diff ratio from 2:92 to 3:45 and that made a big difference as well. I will always run edelbrock from now on.

[@MuscleCarSolutions]

It’s common. Folks tend to go way bigger than what they need. On a stock engine and small cubic inches, you made a great choice!

[@Tk-ou9ec]

@@MuscleCarSolutions thank you for that. It sure works well. I’m happy.

[@Tk-ou9ec]

Hello again. Sometime later I know. The next good improvement I made on my 500 was to remove the choke flap! My car starts fine without a choke so I thought it may have been a restriction with the flap sitting there blocking the Venturi It did make quite a noticeable improvement once it was removed. Awesome

[@davidparslow1321]

Great video, so helpful, I managed to improve the fuel starvation issue when cornering by having 2 fuel pipes, one supplying each float chamber.

[@MuscleCarSolutions]

Glad you found a solution to work for you! Good work!

[@kevinrandall8327]

I but a comp cams thumper kit into my brothers 65 T bird 390 FE, I fitted an Edelbrock 600 CFM electric choke carby, the car had a flat spot when the secondaries engaged. I fitted a set of main jet needles from a non elcetric choke carby, then adjusted the secondary choke plate to come in a bit earlier. Problem solved without dismantling or removing from the motor, including the road test I reckon the whole operation took about 45 minute’s. And to think that I spent hours trying to get the original ford carby to work properly and a new original ford carby was twice the price of the 2nd hand Edelbrock I bought off eBay, now the car sounds good, goes really good and run’s perfectly.

[@jeffjohnon4223]

Using the Edelbrock fuel pump helps too,6 psi and 140gph, that is a HVLP pump. Float setting is crucial on those but once you have them dialed in, they really work good.

[@MuscleCarSolutions]

The only issue I have is not the set pressure, but not having the opportunity to adjust if needed. Plenty of times where a little less pressure is called for. So I’ll always be a champion of adding a good regulator and a gauge to have another point of adjustment in a system that doesn’t have that many. For sure a good quality pump like Edelbrock is a great starting point.

[@psychotrucker9880]

I put aclerator pump part number 1468 for a 800 in my 650 avs. It help a lot

[@sethbarnes7608]

I installed the AVS2 on my 74 Lincoln, along with an edelbrock performer 460 intake and immediately noticed a huge increase in power and throttle response as well as overall drivability with no other changes, on a totally stock engine, and picked up 5mpg instantly, 14mpg, up from 8 or 9 with the stock Motorcraft carb.

[@MuscleCarSolutions]

That’s nice to hear but pretty unheard of, unless that poor old motorcraft was just that bad. 😂 Tune it! You’re likely to find more than what you expected!

[@sethbarnes7608]

@@MuscleCarSolutions it was fairly awful. I recently did the 'ol HEI distributor swap, deleting Ford's infamous Neverspark system, and that was also a huge improvement

[@MuscleCarSolutions]

@@sethbarnes7608 for sure ignition is so overlooked when it comes to carburetor performance. The two go hand in hand! Smart move!

[@yurimodin7333]

NICE, I am getting ready to do the same thing on my 75 Lincoln 460 with a performer and a used 1406 I just rebuilt.

[@GaryH-pw9cm]

Had a 650 Holley spread bore and an Offenhauser dual port manifold on a 460 73 T bird. Got good gas mileage and a lot of low-end torque. Those Offenhauser dual port manifolds are known for good gas mileage and low-end torque. I see them on e bay for 460s now and then. Also ran an MSD ignition that seemed to help. The old 460 is a powerful engine that can get reasonable gas mileage if set up right.

[@steveveness3829]

G'day from West Australia😉 I started watching your videos a couple of days ago. For 1 specific reason. I had not set up an Edelbrock carby for at least 15yrs. It is probably pertinant to point out I started my Apprentership in 1981. I have been a qualified Automotive Engineer for 43yr in Febuary 2024. One of my strong points is indeed Carburetor tuning. I started with everything European, ( the high dollar fast stuff) multiple carb stuff. As a first year apprentice ( by the way I am a 3rd gen engineer in my family) my ex Ferarri Engineer boss learned I had been helping my father with cars since I was very young. And dad told my boss I anoy my father because I get more out of his engines than he could with carb tuning. Guess what my boss did!!! Gave me 7 carb tunning jobs on my very first day.

[@MuscleCarSolutions]

The Australian market is one of my favorites. It’s been close to ten years since I was there last and I fully intend to get back there one day soon. Love the car culture there. Any of y’all would fit in the US and be right at home! Good stuff and congrats on a nice long career!

[@bodrika]

About the ugly, my Edelbrock AVS used to stutter and stumble on hard lefts just like you said. That was with a rubber fuel line. The problem stopped after I installed the hard fuel line 8126 on the passenger side. It may be coincidence, and I don't why that would have fixed the problem, but it went away after that change.

[@jackflash538]

Takes me back to the days of AFB's & the WCFB's. The AFB's are the hot ticket for inline dual quads with those side mount fuel bowls. Like the Q-jet & Holley's spread bore models the AFB is a very PRECISE metering device. The SOUND of fire walling those Q-Jets with the air cleaner lid reversed & that BAW-WHAW sound when those big secondary sewer lids opened up I can never forget! It sounds like Edelbrock has taken the ole AFB to it's maximum performance level. To put a twist on one of General MacArthur's quotes "Old carbs never die, they just get rebuilt!"

[@jeffpittman8725]

Had a 1964 SWB Chevy with a 283. Put an edelbrock on it. Absolutely amazing. It wasn't high HP but ran extremely well and got surprising fuel mileage. I have a ford with the inline 6 and will be setting it up with an Edelbrock. Can't wait!

[@MuscleCarSolutions]

In the right situation, every carb can succeed. Would love to have a 64 Chevy! 😂

[@jeffpittman8725]

@@MuscleCarSolutions Especially these days. I let go of a lot of older vehicles that are quite expensive these days. I currently have1996 F150 SWB with no plans of letting this one go! Best wishes!

[@MuscleCarSolutions]

@@jeffpittman8725 the used market is a mess right now. I’m hanging on to everything until it calms down! Thank you! Same to you.

[@charlespartak2435]

Jeff , do you still own that 283? I have a 65 283 i have an avs2 500 cfm on and id like to know how you ended up with the setup.

[@RusticRestorations]

Thank you for making this video. I have a 1974 Dodge Charger with a 318. When I was a youngster I just bought what was cheapest or was available. I ended up buying a Edelbrock carb because it was in my price range. Now knowing more about the carb it is still the perfect fit for me. All of this is new to me, building an engine, the distributer with the correct timing, the carb, the fuel delivery, the thermostat, etc. thank you for putting out a high quality video showing everything about his carb so I know what to expect.

[@MuscleCarSolutions]

That’s the fun part of playing with cars and engines. There never only one solution to a situation. We all learn something new every time we work on these old classics. Enjoy the ride and don’t hesitate to ask any questions along the way!

[@vaghol]

I have an AVS2 and I am happy with it. I run a wideband and it's easy to get really good numbers. Very tunable. I do have an off idle stumble/hesitation. Top hole on accelerator. I drilled the squirter out to .045 and it helped. I ordered a Thompson performance carburetor power plate and hopefully that's enough. You can also get the 1468 heavy spring accelerator pump, like someone else mentioned. I do think that's the only real flaw of the carb. Like you said though, more to do with ethanol than a bad design. Still a great carb and I would recommend it for an street car. Great video.

[@MuscleCarSolutions]

I’m not a fan of that plate, especially on an annual discharge carb that atomizes the fuel/air mixture enough to start the process. The ethanol is a challenge on a couple levels. Such a pain to work around and one factor that almost no one considers when tuning. I’ve been working on an internal mod to the carburetors to open up the fuel passage. It’s a choke point in the system when putting the big pump in and a larger squirted nozzle. So far the results have been minimal, but I’ve just started on it. We’ll see where it leads. 99% of the time these carbs can be tuned out of whatever issue it’s having with fuel delivery. So it’s a bit of a pointless exercise, but something I’ve wanted to try for a long time. We’ll see what happens.

[@sjd7188]

I had a stumble with my eddy 1409 on-my boat. The accelerator pump linkage had some play had to bend the rod to lengthen it to keep pump under tension at all times. I was also running a AFR meter, what i saw was after nailing the gas it went way lean for a long time. Before the AFR meter i was thinking it was lean so i kept richening step up rods and jets creating another stumble later in rpm range…. Had not had the afr meter i would not have seen how lean it was going just after hitting throttle, and how long it took engine to recover and then go way rich… taking the slack out of accelerator pump linkage made it disappear, then going to leaner rod helped the holeshot situation .

[@vaghol]

@Poor Touring Hot Wire Garage It's not really an assumption. I can watch my AF go lean for a moment when I accelerate. Also, if I pull the choke out slightly, the problem is gone and It it's very responsive. I did also mess with the timing until it started skipping. Thanks anyway though.

[@GaryH-pw9cm]

@@sjd7188 I had a stumble on acceleration. I drilled out the squirter jets and the stumble was gone.

[@sjd7188]

@@GaryH-pw9cm im already using the .043 nozzle did u go bigger than that?

[@stevelueb7787]

You've got Experience. Thanks for passing along some knowledge. I'll be watching & asking some questions when I'm tuning my 340 & 440 'Cuda's Thank you Cheers

[@MuscleCarSolutions]

Please do. I enjoy helping when I can. Thanks!

[@robertclark7848]

I have used edelbrock carbs on my car for 30 years they are good street carbs and stay in tune , I’ve used Holley is a good carb also but to me get out of tune on older models but better for race applications, I’ve rebuilt it years later and got a tuning kit due to I upgraded my engine with a cam and performance heads ported and needed to fine tune it better, but for me I like them

[@gothicpagan.666]

This side of the pond, most seem to use Holly carbs, mostly because of availability. Over here the most popular applications are for the Buick derived Rover built 3.5 or 3.9 Ltr v8. They rarely make a genuine 250 hp in tuned form. The Elderbrock is night and day better than a Holly for that application. As for the fuel surge in corners, start with a higher fuel level and twin feeds. Just something we learnt at the track

[@dkp7895]

Good video, thank you for sharing your knowledge. I've been an Edelbrock guy since the early 90s mostly because that's what I learned how to tune. I'm not 'anti' other brands, I just know Edelbrocks. Everything you said was true. Ive been able to get these carbs really cheaply from people that dont have the patience to tune them correctly, put them on an engine I have with a strip kit in one hand and teh book in the other and tadaa, works great. Its true they wont be on the fastest drag cars but my cars have been 100% street driven and I have found that once you get your combination correct, these carbs are rock solid.

[@MuscleCarSolutions]

@@dkp7895 putting the right part in the right application makes all the difference in the world. 👍

[@charlesjenkins5087]

So it seems that I have chosen the right carb for my purpose. Great video. Very insightful. I am new to this muscle car thing and just built my first car from the ground up. The Edlebrock Carb was the clear choice for me and has been very easy to setup with the help of your videos.

[@MuscleCarSolutions]

Nice! They have their place in a broad scope of uses. Some fail to understand that and think one type or brand of carb covers everything. I’m glad you found the right solution for your build! Don’t hesitate to ask any questions and I’ll do my best to help.

[@hotchihuahua1546]

The majority of the driving on hot rod street cars is in the lower torque curve of the motor . The design of the Edelbrock AVS2 addresses this for the street with a fogging effect . This increasing the burn efficiency of the fuel in the combustion chamber and makes for a very drivable engine , even with a more aggressive cam . More torque and increase mileage is the big reward !

[@Winterstick549]

Would vacuum secondaries be better for street and off road?

[@robertm2172]

Been running a 1410 on my boat over 15 years and it’s been great

[@MuscleCarSolutions]

Edelbrock makes great marine carburetors.

[@C_71]

I have a 1978 D150 with a 360 LA stock. I put a Weiand aluminum intake and an AVS2 675 carburetor on it. I live in the upper Midwest and since the roads are clear, I decided to take a drive. Today I've had to do a bunch of adjustments because it died and started stumbling. I noticed it was leaking fuel and getting heat soaked with a ton of vapor after driving it kinda hard. I looked at my fuel pressure guage and it's reading 8psi, now it won't start until the fuel and vapor is gone so I'll have to add a FPR other than a Mr. Gasket.

[@sorshiaemms5959]

try a summit carb that looks like a old Ford carb has power of a holley but float bowls like the edelbrock so no leak just got one tuned it and goes like stink

[@TheOGjonsnow]

Thank you for this video. I have an edlebrock Carb on a car and while driving 40-60 mph it would shutoff on quick left turns

[@markmelendez1029]

Pulled my steel intake and Qjet off my 86 c10 and went with a edlebrock card and intake. The old set up ran much better. Got the edlebrock to run decent but one I let it sit for 10 minutes and now I'm have to pump to start. Looking to go with Holley. Can't be worse

[@BPattB]

Did you take the air horn off the new carb and clean the internals before you put it on? I know it sucks to have to do and we shouldn't have to but it doesn't take much to get stuck in the needle and seat and cause problems.

[@ryanwilliams3369]

The only time I had hesitation with an Edelbrock is when the distributor timing mechanism froze up. But do have a left turn issue in my k10! Thanx dude I was gonna buy one for a firebird!

[@Jeffsanythingoutdoors]

Good video. I'm trying learn to time mine I'm having bunch issues with getting mine set. I got a 383 stroker. 92 camaro rs

[@79c15]

Heat soak fix $30 phonetic inch spacer or wood spacer. Dropped carb temp almost 70°

[@blainesnider9089]

The dual fuel fill should help. Fuel going on both sides

[@seniorrider9337]

Muscle car solutions: I have a 318 in a 76 D100 that I rebuilt in 89 using flat top 9.0 to one pistons, Edelbrock performer cam and lifter kit with Edelbrock performer intake. I used a 500 cfm Carter AFB carb and tuned it to run well and transition from idle to part throttle fairly well. Gas mileage has been terrible, but I rarely drive the truck. I had the Carter rebuilt due to drive-ability issues and never have been able to get it working right. It always seems to want to stumble and sometimes dies when going from idle to part throttle under load. It is worse in winter! If I have time I usually go out and start it up, run it for 10 minutes and shut it off and let the engine heat up on it's own. When i go out after 20 minutes of so and start it up, it runs better, but still has the stumble and almost die problem. What Edelbrock should I use to get my truck driving better. I am thinking 1406 600 cfm.? Would the AVS be better? Thank you for your help, Tom.

[@MuscleCarSolutions]

It’s not the size of the carburetor that’s the issue. What have you done to tune the 500?

[@seniorrider9337]

@@MuscleCarSolutions When purchased from Summit, it was listed as a rebuilt Carter. The numbers I think I see on the left front are C5 9511 S. When installed after rebuilding the engine in 1989, I spent several weekends getting it tuned using a strip kit and instruction book. I still have the strip kit, but no instructions, so no tuning lately. I am wondering if this carb has been rebuilt past it's useful life. I have a back injury and don't do too well crawling into the engine bay working on this carb now. So many folks say the new Edelbrocks are lots of times just bolt on and run well.

[@MuscleCarSolutions]

@@seniorrider9337 there is no carburetor that just bolts on and you don’t do anything to. It must be adjusted for your individual circumstance, driving style, elevation. You can change carburetors if you’d like, but understanding how to make those adjustments is part of the process. Way too many variables here. What’s your timing set to? What’s your fuel pressure at the carburetor? Have you reset the floats? What step up springs are in the carb and what is your vacuum at idle?

[@seniorrider9337]

@@MuscleCarSolutions Thanks for your time and answer. I think I need to find someone local who really knows what they are doing, as the guy who rebuilt the carb 2 years ago seems to have misled me. I am no longer able to do the tuning due to age and a back injury. I was under the impression that the new Edelbrock carbs came very close to right for the application, so I guess I was wrong. I have tuned carbs many a time in my younger years, especially modified motorcycles. The most labor intensive carb I ever rebuilt and tuned was a quadrajet for a 427 Chevy marine application in Nam. I know how labor intensive it can be. I remember spending a couple of weeks tuning a pair of 36mm Mukuni carbs for a hopped up Yamaha Rd- 350. After all was done, it was a real pleasure to ride. Thanks again for your time and help. I will be looking for someone who knows these carbs locally and can get mine tuned up better than it is now or tells me it is too old and I need a new one. Oh, and Happy holidays.

[@MuscleCarSolutions]

Well the good news is the Edelbrock carb isn’t near as difficult as the Qjet or the Mikuni carbs. Hate to say it though, most “mechanics” can’t tune a carburetor. Which in all honesty is why I started making these videos so folks could do it on their own. Hopefully you’ll find someone who can give you a hand and get you fixed up.

[@NilesJStJohn]

Great informative vid and lots of excellent pointing outs of positive n negatives . I do want to know. I have a mild street Mopar 318 with Weiand stealth intake. I have a AVS 2 on American untying n it . Had a 69 440 magnum factory AVS on it n ran very well but wanting better fuel atomization as well as maybe some power gain. It does have 8.5-1 compression. High swirl 302 casting heads and a Hughes cam designed for my combo. Hyd flat tappet with .486 int and .502 exh. I run 3/8 fuel lines tank to Carter hv mechanical pump and a pertronix flame thrower 3 distributor and matching coil. Power master high amp alt. It looks a a total street car with 4.10 gears and 2800 stall. Hope w much fuel pressure should I regular it t to will be a gauge right before carb and right after regulator. I run a filter close to the tank and another right after the fuel tank pump. Seems about 6psi should be right . I know I can contact Edelbrock. But would like your opinion. Thank you very much .

[@MuscleCarSolutions]

Lots to share with you to answer your questions and to change a little how you look at it. First off, curious about your cam selection. Check out this short video to see what duration is the number that’s needed and lift not so important. kzbin.info/www/bejne/mH_FqIKDqtyCbLs. Without knowing those specs but looking at what else you have and the low compression you’re running in that engine, is still advise to start at 6psi and tune down from there. Edelbrock’s love operating in the 4.5-6psi range. Any higher you’ll run into too much and any lower (depending on how you set the floats) can run into starvation issues. The flow rate at that psi is good. As far as better atomization is concerned, that’s going to be covered perfectly by the AVS2. Power gain is going to be limited by the rest of your set up. Tuning abs timing are your keys to finding the max power in that engine. I have lots of videos on all these topics if you get a chance to check them out. Watch that lift vs duration video first and let me now what you thing. 👍

[@terryporter4987]

I adjusted as you explained wow , I'm very impressed with your knowledge on carbonation

[@MuscleCarSolutions]

Glad it helped!

[@perryrose8843]

I pugged the PCV port on mine and the engine runs a lot smoother. A very important step when using Holley Sniper fuel injection.

[@VinoRatRodbuilds]

Right on! Great to get this info, very informative. I like what we all can learn from your demo's of carbs.👍😁

[@MuscleCarSolutions]

Thanks man. Appreciate that!

[@brianlafollette7530]

Run Edelbrock carbs for a long time. The upgrade I would like is to put buttons and zippers on them so I can make changes even faster.

[@mechanicven]

Hi sir thank you for sharing your video i lernn a lot of knowledge regarding your video thank you

[@mikef-gi2dg]

Good breakdown of Edelbrock I’m considering one for my street car

[@spindriff]

Hello Muscle Car Solutions, thanks for the great video. I am on the fence right now with my stock 1990 Chevy 2500, I am having TBI issues I thought about swapping it for a Sniper or Etech, there have been more than a couple of guys complaining about the sniper , so I am considering going to a carburetor, I have always liked Quadrajets for stock engines, I have rebuild several back in the 80s and 90s, I never tuned one like you talked about I just figured they were set up for the engine they were put on. If me and my buddies modified our engines Holly was our go to choice. Now Holly has a Quadrajet replacement that has a spread bore base and larger secondary throttle plate. If I convert to carburetor I have to change the intake manifold and the distributor, I am fine with that. You gave me something to think about as far as the Edelbrock option. I need this 90 2500 to travel from the L.A. area to the most northern part of Washington a few times in the next few months for are retirement relocation. Any advice/recommendations would be appreciated . Spindrift

[@MuscleCarSolutions]

@@spindriff it’s pretty common to have issues with the TBI EFI from that era. It’s like having a flip phone from 1998. The technology is way more advanced and there is no more support left. So switching to a modern EFI will always be the best choice for a cruiser. As far as folks having issues, I can tell you that 95% of the time, it’s user caused. Bad grounds is by far the number one issue. It will fry an ECU QUICKLY. Even the self learning units can be a bit complicated if you’re not used to how to tune. So any issues, people tend to blame the part because they don’t understand how it works. I’ll eventually do a self learning EFI series of videos if I can ever find the time. In the meantime, if you’re more of a novice, using a universal carb like the Edelbrock’s or the Holley is generally not a bad way to go. You’ll need to do some tuning to help match it up with your application, but you’ll have no issue with that commute once you get the carb sorted out AND if you have the right support (fuel system, ignition/timing) to help the carburetor perform the way it should. It’s been awhile, but I’ve made the trip from WA to LA and back a few times in cars equipped with Edelbrock carbs. No issues.

[@spindriff]

@@MuscleCarSolutions thank you very much for such a timely response, I think I will go with a Caurb. set up for now, I already have a complete HEI setup intended for a car already sold, I will need a square bore manifold for a modern TBI anyhow so I can go that route next year after I am all moved up north. I can take my time installing and put extra ground straps/cables (good advice) from frame to motor and battery. Best Regards Spindrift.

[@shanek.odumodum9811]

Great video! I need some tuning help! 1954 Ford Customline gasser 1985 460 Edelbrock 1411 750cfm carb Performer intake Thumpr cam Open headers

[@Letsplayitgood]

I have a rebuilt 455 olds, I don't know all that went into it. Was told it has an RV cam. The valves have 3 angle cut. It idols and can Rev up ok. At idols I can reach 12 to 13 lbs. Of vacuum. The carburetor is a new 750 eldabrock. HEI ignition. Taylor wires. With what I was told, the low vacuum,at 12to 13 lbs and stinken exhaust I am thinking now I might have valve issues. I will retime it an adjust the metering rods and springs some. If there is anything you could add, It is all appreciated. Thank you for all your support.

[@MuscleCarSolutions]

It’s difficult to say. Rv cam is such a generic term. If it’s a very low duration then it’s my assumption given that engines ease in making vacuum, it should be much higher. Run a compression and a leak down test?

[@Jessewren1968]

I switched to Edelbrock from Holley after the near-impossible task of trying to keep the Holley from leaking. I should have made the change years ago.

[@MuscleCarSolutions]

It’s one of the big benefits for a street user. No leaks!

[@Jessewren1968]

@@MuscleCarSolutions The last two Holley accelerator pumps have leaked right out of the box for me as well. I had to reuse my old one both times. I'm done with Holley.

[@benjaminp6924]

Got a AVS2 in my 88 Chevy van and a 1406 in my 02 express, Both on 350s

[@Gary-Anglebrandt]

Good confirmation of a lot of things I've discovered through real-life work. Especially that sharp left-hand turn issue. That's real! It's a pisser. But I'm glad to know there's nothing I can do about it. 😅

[@bens8696]

Really informative video! One thought… why not fabricate an external primary pump? Little syringe where the pump rod lives… one issue I’m curious if you ran into is a lip about a quarter inch up in the primary pump cylinder,? Seems to limit the stroke of the pump. The cup hits it and the spring soaks up the rest of the travel. I wonder about honing it to get a little extra juice too.

[@MuscleCarSolutions]

@@bens8696 I did a video measuring and showing the exact stroke travel of the pump. It doesn’t have the length of travel most assume it would be.

[@79c15]

Also never ever had an issue with left hand or right hand turns in my edlebrocks. And I've done 30 40 50 80 100 it don't matter just never had the issue.

[@DEADIKATED]

Thanks going to install one in my 72 C10 got a new one for $200 just waiting for the phenolic spacer to be delivered

[@anthonyreyes-brown467]

Great video! I'm so tired of guys telling me " you should have bought a holly" I feel like it's a bunch of kids just repeating what they heard from other people.

[@MuscleCarSolutions]

Those are the same people that tell you it ran perfect “right out of the box”. No it didn’t! You just can’t tune! People are weird.

[@softenerguy]

Great video. BUT a hard left turn would uncover the passengers jet, not the drivers side jet like you demonstrated. Did you mean to say a hard RIGHT turn? Thanks for sharing your knowledge and for the quality videos.

[@jamesford2942]

On the ugly part I think that the reason you can starve for fuel in a left hand turn is that centrifugal force keeps the fuel from transferring to the driver side. The small capacity of the float bowl is not enough to keep up with demand. That is also the accelerator pump side so that diminishes the capacity as well.

[@JeLifeCoach]

Hey brother I’ve really enjoyed your channel. Thank you!

[@MuscleCarSolutions]

Thanks for saying so. I very much appreciate that.

[@JeLifeCoach]

@@MuscleCarSolutions yes sir. Anytime.

[@jasont.1530]

You should add a disclaimer, that if you know how to tune a carb, you can tune out the cornering issue. Also the secondary circuit will dry quickly with todays gas and you will get a bog if you floor it right after it sits for awhile.

[@MuscleCarSolutions]

The cornering issue is a design problem that unshrouds the jet on that side. There’s no tuning that can recover from lack of fuel. It’s a fairly well known problem with these carbs, but in their defense they were not designed to be a star on the autocross track.

[@VintageTinGarage]

Excellent explanation, thank you

[@stillboyzcustoms8182]

i just came across this video, and albeit older, i have not experienced the starvation from left turns, however i run a offroad carb i think a 1914 not for sur on model number but off road avs2

[@MuscleCarSolutions]

@@stillboyzcustoms8182 it’s aggressive turns where that starvation occurs. Don’t think you’d experience that with an off road rig!

[@stillboyzcustoms8182]

@MuscleCarSolutions it's a daily but went with the offload just incase...😀

[@bensonlee7456]

My question is what is the proper procedure for setting the idle/air mix when there are 2 carbs on top of a 6-71 blower? Do I turn the screws all the way in on one of the carbs first or? Enjoy your videos. Thank you.

[@brocluno01]

OK, considering a 1410 for a Jet Boat build. 468 ci motor with 270* cam at 9.8CR with Aluminum heads (so it can run fuel dock gas). Stock Berkeley pump with A cut impeller so it'll load the engine to maybe 5K to 5,500. I like the idea of no leaks below the gasket line. What do you think of this application?

[@PNT-Garage]

Great video. Lots of great info, and I really appreciate that this wasn't another video about JUST the pros and ignoring the cons. One of the most honest info vid on the Edelbrock carbs out there. Thanks!

[@MuscleCarSolutions]

Thanks man! Always appreciate your feedback. Had to look at it objectively. It’s the only way to select parts for a build. You know as well as anyone. It’s the combination that bakes a great cake! Cheers!

[@PNT-Garage]

@@MuscleCarSolutions nail on the head. Cheers!

[@MuscleCarSolutions]

@@PNT-Garage thank you!

[@tadeckel5053]

I made a living in 80s doing carbs. Specialized in fords variable venturis that everyone hated. Always thought would be fun to throw 3 VVs on a hotrod instead of regular 3 dueces. Same with thermoquads, mostly just misunderstood.

[@MuscleCarSolutions]

Only time I monkeyed with them was to remove and put a two barrel on. Reviews have always been mixed, but I’m sure they did what they needed to do on a stock application. Everything has its place!

[@malc1012]

I have a holley 4160 on my 454 c10. I really want to make it a reliable long distance cruiser without ever LS swapping it. I guess getting an edlebrock carb is a start. I always seem to have gas leaking at the fuel line fitting on the carb. Those one piece fuel rails are never aligned right and Holly just make individual steal braided fuel fittings for that carb and only for the 4150 and newer models. Looking to switching to edlebrock and learning more before I jump into an edlebrock or just buy a newer Holly

[@MuscleCarSolutions]

I’ve said many times on this channel that everything is situational. Pick the right carburetor for the application and then the right size. You’ll not go wrong with that way of picking way to go with. One thing the Edelbrock has always been famous for and that’s NOT leaking. Keep watching the videos in the Edelbrock Tech series I have. You’ll find that they are very simple to tune once you have the process and set up dialed in.

[@malc1012]

@@MuscleCarSolutions thank you for replying. I’ll watch more of your videos. Just subscribed

[@MuscleCarSolutions]

Don’t hesitate to ask any questions. KZbin sometimes is weird on sending me notifications but I try to answer every question. Happy to do so.

[@rosco664]

My 25 years of working on cars Edelbrock carbs are good for street cars with low hp engines or a cruiser type car. You wanna go fast and make as much hp as you can a holley or really any brand carb of a 4150 is the way to go. Want to go super fast, a carb with no choke or vacuum secondary for all out racing.

[@MuscleCarSolutions]

Uhhh…. something like that.

[@Gergatron4000]

I ran a Street Demon 625 and had similar issues with the accelerator pump. Where your opinion of the Edelbrock pump is that it's just too small, the SD's one was weak and intermittent (sometimes nothing). I fixed both of these issues by using a stronger spring to build more pressure behind the piston so the cup sealed better, and I also put an o-ring inside the lip of the cup to push it out into the pump bore. The standard SD pump was terrible in my opinion. They are made by Holley, so they had the chance to use the winning design with the diaphragm and they didn't. My biggest gripe was with available needles/jets. Off-idle and midrange was brilliant, hut it was either rich cruise with good performance, or good cruise with lean performance. I tried everything, but the economy was just disappointing. Secondaries were always lean (on a mild 302C). After finally losing the tuning kit, it was just easier to buy and rebuild a 650 spread pumper. It's been the best economy- and performance-wise, and this is carb number 4 now. I have tweaked it a little (70 IABs, jetted 65/89, PVCRs out to 55, 2-stage PV) and it's a perfect mild street carb now. I won't hear any criticism of these carbs now that I know my way around them.

[@MuscleCarSolutions]

I have limited interaction with the street demons but have heard plenty of complaints about their fuel delivery. Thanks for sharing your insight!

[@ThePaulv12]

I wish the Thermoquad in its original form was back - phenolic body and all. I can work wonders with those things. People never realized they had 2 stage accelerator pumps in them. They were set up wrong from the factory. They were supposed to give a second shot down the primaries as the secondary throttle valves opened, before the air doors reacted. Also there was a dashpot to control the rate of secondary air valve. Many either a) removed this or b) failed to test to make sure it was working. Later variants had a restrictor in the port to control the air valve rate of the dashpot. It was still very fast but slowed it to eliminate stumble. Additionally, the secondary air valve had to have a small amount say 35-40 thousandths of air door freeplay to allow initial movement. With the long gone strip kits they were a great thing. SImple, great economy, dual booster venturis in the primaries. Apart from stupidity, they really only 1 fault and it was a big one - the plugs at the bottom of the metering rod wells would fall out allowing fuel to pour out. This cause people to tighten the screws breaking the bosses in the resin body worsening their reputation. Also on disassembly many would forget the 2x screws inside the primary area and crack the resin body. Their problems were mostly manufacturing errors combined with manufacturing set up errors combined with aftermarket accelerator pump listings being wrong as they were too short to allow the dual accelerator pump activation.

[@MuscleCarSolutions]

That’s a lot of info! I think the warping/leaking and the lack of how to tune gave it the bad reputation.

[@Clydes.Shop78]

Great info as usual. I think a lot the Edelbrock angst is like the Ford vs Chevy vs Dodge drama...a whole lot ill informed opinions based on one off experiences.

[@MuscleCarSolutions]

True. Though the carb thing is generally based on not applying the right solution to the equation. When you apply the wrong part, the outcome is bad. But instead of blaming themselves for making a poor decision, it’s easier to just blame the part then taking responsibility.

[@pacbrian3809]

Good info. Thanks for putting this together

[@TheJMan1K]

The best carb nowadays on the cheap are Jegs carbs. They flow like hollers but don’t have the leakage issues

[@scottcolvin4138]

Thank you for the video. I have a stock sbc 350 with the 1406 edelbrock and i live in Montana at 4k elevation. What can I do to jets and metering rods etc to get the best fuel efficiancy. This is on a 85 GMC truck, and I am trying to keep the four barrel carb, but I want the best lean fuel mixture I can get. Thank you in advance for help.

[@MuscleCarSolutions]

The rule of thumb is 2% lean for every 1500 feet of elevation gained. It’s pretty accurate and an AFR for high elevations is always a good idea. Helps keep an eye on it and will help in the tuning process for sure. But without one, stick to that rule and you should be fine. If you look at the Edelbrock tuning chart it will give you percentages on the lean and rich side so you can judge where you want to start based on your elevation.

[@scottcolvin4138]

@@MuscleCarSolutions thank you very much! So what springs and metering rods, and jets would you start with? I really appreciate the help

[@MuscleCarSolutions]

@@scottcolvin4138 If you go to my website you can download the Edelbrock carb tuning guide. Find the tuning charts for the 1406. Look in the cruise mode and start tuning there. It will give you the percentages of lean or rich on the sides and you can start with that adjustment on the primary and the secondary side. I did a video on how to read the tuning chart. It’s very easy and is the basis for all your tuning. musclecarsolutionscarbs.com/resources

[@alpha13dylan]

If your timing is all wrong no amount of carb adjustments will fix it. The edelbrock/carter afb is a great street carb that holds a tune and is a set it and forget it carb

[@boostedstinger]

Awesome videos!!!! I think I can tune one now!!!! I currently have one with a really rich idle it came from ebay I think it may need a few things....gonna check the fuel pressure, float level and metering springs 1/2 turn out on idle screws and its still burning my eyes.

[@MuscleCarSolutions]

Fuel system to support it is where you should start. Filters, regulator. Then start knocking off circuits and follow the tuning chart.

[@SOLDOZER]

Never buy a used carb!

[@boostedstinger]

@@SOLDOZER it's a reman and it works great!!!!! Just have to be mindful when buying used. Don't expect to throw it on and work lol.

[@boostedstinger]

@@SOLDOZER I fixed it with good fresh fuel and a regulator.

[@BPattB]

@@boostedstinger I was going to ask if you got it dialed in, then I got to the last comment and you did. Awesome!

[@harveynewman4333]

i have a heat soak issue with my edelbrock,AVS2, 650cfm carb. i installed the heat-spacer gasket, by edelbrock, very little help. was told that issue is due to the low boiling point of ethanol fuel, boiling at 173 degrees,causing flooding after sitting when hot.

[@MuscleCarSolutions]

That is correct. Ethanol boils at a low temperature (varies by elevation). The 3/8” thick gasket is ok, but sometimes more is needed. I did a specific video on this that you might find helpful. kzbin.info/www/bejne/qYm8ZadugbiqoNU

[@richardbates2367]

I built a Chevy truck 355 with the competition cams xe 268h 477/480 lift 221/224 at 0.50 anyway it was a slightly different duration than the factory sbc cam profile and the 355 with the Holley street dominator aluminum intake manifold I figured would need a better breathing carburetor so I had acquired the Edelbrock 1407 750cfm manual choke performer carburetor it ran strong but it was not as good as throttle response as the factory qjet carb the Chevy truck came with, and the gas mileage with the Edelbrock was horrendous so I pulled it back off and slapped the quadrajet carburetor right back on the 86 chevy k20 custom deluxe long bed 4x4 truck... That being said my nickname was well deserved for the Edelbrock was the drag carb!! But it just didn't get the acceleration plus the mileage the qjet did so I ended up going back to the factory quadrajet carburetor.

[@MuscleCarSolutions]

Yup. Happens when you put too big a carburetor on. That’s a very mild cam. The 750 was way too big. 600 would have been a better choice.

[@johnweaver8470]

I've been waiting for another video, awesome content as always, can I swap my boosters for avs 2 boosters I'm running 4edelbrock carbs would like to upgrade them to avs2 performance

[@MuscleCarSolutions]

Hey John. Couple things. Yes the boosters will fit from an AVS2 to an older performer series. Problem is, Edelbrock doesn’t sell them separately. Also, even if they did, you’ll likely not be able to take advantage of them. I am a few months away from doing this test and video, but I’m certain the fuel supply was also altered to account for more fuel flow with those boosters. I’ll test that theory soon.

[@troythompson1621]

I'm new to Eldebrock and want to build a sbc for high rpm, but good mpg when driving easy. I'm pretty sure I want to go Eldebrock and trying to decide between the 600 and the 750 performer series.

[@MuscleCarSolutions]

High rpm? How high? For what purpose? Because you’re asking for two things that don’t exist together. Easy driving/fuel economy and high rpm.

[@troythompson1621]

@@MuscleCarSolutionsYeah, bunch of issues. I had a thermoquad on a 340 that got low 11s and 17 mpg at 55. I'm hoping to build a lesser monster, but still be quick. The adjustability is supposed to be good with the Eldebrocks, I'm hopeful that would help. After doing some math with approx. 300 ci and 8K rpm, the 650 should suffice, using 90 % efficiency. It might be a hair under at the top end but I would rather be a little under than way over.

[@MuscleCarSolutions]

@@troythompson1621 best of luck!

[@dgiorgi1725]

Hi, your videos are simply the best!!! I seriously mean that too. I noticed your fuel filter is full of gas. I have an electric fuel pump with a mister gasket regulator and my fuel filter is at best about a third full. It seems once the truck runs and gets warmed up I have problems with no fuel. There is no vapor lock, no clogged fuel filter before and after the electric pump. Any suggestion? While I am home everything works fine but once I am on the road she behaves poorly and leaves me stranded. Thanks again for these great informational videos.

[@MuscleCarSolutions]

Couple questions. Is the carburetor bolted directly to the intake? The inexpensive Mr Gasket pumps are known for being rather unreliable. Have you tried a different pump to verify that it’s working as intended? Are you running any sort of regulator in the system? Hopefully and it’s the last thing before the carb like I mention in my fuel systems video. I very much appreciate your kind words. Thank you!

[@dgiorgi1725]

@@MuscleCarSolutions wow, that was a quick response, thank you. Everything is new on this build. I am going from the tank to a filter, to the electric pump, to the mr. Gasket regulator, to a clear filter and then into the carb. I have an extra electric fuel pump I was thinking of trying also I am thinking just use the mechanical which it currently does not have. Its a stock 302 ford in a 1950 Willy's pickup. Engine is all new rebuilt too. for about 40 bucks I can buy a new mechanical one, what do you think. I ordered a pressure gauge to test the pressure but at this point I am so frustrated and I have no faith when I take it out. The carb is also new too.

[@MuscleCarSolutions]

Check out the video I have on how to set up a fuel system for a muscle car. Will get the order straight in your system. At this point I’d start to eliminate potential problems. The verification of the pump working properly would be a good place to start. Is this a vented tank? What cap are you using? Good thing to check would be when driving and it’s acting up to pull over, and open the cap. Does a big rush of air occur when you pull the cap? Could be creating a vacuum. Just some guesses here. Keep investigating!

[@dgiorgi1725]

@@MuscleCarSolutions wow, ya know I never thought of the cap, what a great idea.I am working my way thought the system. I notice the see through filter on your truck seems full, mine is never even half way. I'll check out the vid. Thank you so much for your time and expertise, it's greatly appreciated.😀

[@Kaydee351C]

What about their 2bbl's and the VRS models? I'm planning on building a 4x2 I take or going with 2 VRS'S🎉 355 CU .I. 302. With one or the other help me decide, thanks. I like Elderbrock but I can't have any turn staving the engine.

[@brianwhite7179]

My 1450 just broke a spring off eccel pump. I pumped my sb 72 chev pickup and felt it break. Checked eccel pedal cable to carb it works so its inside the carb any ideas. Never heard this before. Carb is 15yrs old never had any issues. Dam it just when I wanted to drive it. The throttle feels very weak like a spring broke. Brian

[@MuscleCarSolutions]

Not sure I’m following you. What spring? On the accelerator pump? There’s two. One on the assembly and one underneath as a return spring. Pop the airhorn assembly off and inspect. Did you mean 1405? Those assemblies are easy to come by if that’s what you’ve broken.

[@fredobot5298]

Left turn issue...Both sides can be fed from a dual line setup. 👍

[@MuscleCarSolutions]

Generally doesn’t fix the issue. That jet still uncovers pretty easily.

[@fredobot5298]

@@MuscleCarSolutions My 90 RS Camaro, built 4-bolt main 350, had no issues with a 800 cfm thunder avs even in high g turns. Left nor right. Maybe some people do? Thanks for your response!

[@GaryH-pw9cm]

I have a Edelbrock 600 on a 351 W Ford engine that runs great. But it will not pass smog. I have tried everything and it still won't pass smog. So I put the old Holley 600 on for the smog test and then put the Edelbrock back on to drive as it runs better and smoother than the Holley.

[@MuscleCarSolutions]

What did you do to tune the carburetors?

[@GaryH-pw9cm]

@@MuscleCarSolutions The smog test guy just said it would not pass. I went through the manual and bought a kit to recalibrate the out of the box calibrations to leaner. The second time I did the smog test it failed again except this time the smog guy said that the reason it did not pass both times was at idle not the 2500 RPM test. I wished I would have known that before I messed with the calibration. After blowing out all the idle circuits with carb cleaner and compressed air, setting the idle exactly per instructions, still would not pass the idle test. Too rich. So now I use the 600 CFM Holley for the test and run the 750 Edelbrock on the street. I am running a stock camshaft, and a 351 W Edelbrock dual plane performer manifold. 5 psi regulated fuel pressure. No vacuum leaks. I bought this 750 CFM Edelbrock carburetor new. It runs just fine, so I don't want to get rid of it. .

[@GaryH-pw9cm]

Today I installed a new out of the box Edelbrock 800 CFM AVS2 to replace the Edelbrock 750 CFM I was having trouble with described in the discussion above. Problem solved. I just set the idle and made no other adjustments and got a AFR of 14 to 15 at idle. This is way better than the 750 with a AFR of 11 to 12 at idle. The AVS2 should be able to pass the idle smog test no problem. 😊

[@denniskwasnycia1950]

Great video! What is the maximum fuel pressure for the AVS2? I hear they don't like to have too much fuel pressure. The carb I have is a 650 CFM AVS2 that I am putting on a 460 soon. Thanks

[@MuscleCarSolutions]

4.5 to 6 psi is the range you can operate.

[@chuckroast5735]

I run mine at 5.5 psig. You are correct they run rich a higher pressure. I also noticed with a mechanical fuel pump pressure seems to bop around a bit. A regulator will not only lower the pressure but will also smothen out the flow making it more consistent.

[@christopherrivas8917]

hey my friend i have a 1409 edelbrook on a chevy 4.3 v6 mercruiser is driving me crazy 2 barrel nice Beautiful run perfect, when the secondary open the engine almost stop!!! you let the throttle on the same spot (75%85%) a few seconds more it want to go like its not enough fuel or pressure??? .095 primary and .092 secondary… do you think 600 carb is to much for a v6 4.3 is too much? Any help I would really appreciate it thanks you

[@rangelandrevival7763]

I have always loved the Quadra jet carburetor for its mile per gallon advantage, but on my mild vortec 350 it is just not putting out the horsepower that my Edelbrock AVS 2 was before I took it off. And I just don’t have the time to get the Quadra jet perfectly set up, and it is also suffering from fuel starvation, which is an issue on those . Going to go back to the AVS 2 and try to tune out a rich condition at idle. My main question is, do you believe the AVS 2 650 cfm is capable of as good mpg numbers as the Quadra jet when tuned properly? I drive a lot of miles with my street truck so every mpg counts. Great video!

[@jeffreyhohendorf3606]

I bought a 1968 Ford Falcon that the engine kit, carb, trans was all matched up by Edelbrock. The cam is mild, heads are aluminum as well as the intake. The former owner stated it has 425hp. I just rebuilt the carb as the plunger was not pushing fuel. I put a new Edelbrock fuel pump on it and it shows 5 pounds on it at idle. The pump is rated to 80 gph. Now the car has good acceleration as long as I don't open the secondaries, because then it will cut right out...This was a problem since I bought it. The carb is an Edelbrock 650, 1805. Got any suggestions on fixing this problem...

[@MuscleCarSolutions]

Yup. You didn’t mention the engine CI. What size are we working with? Let’s start with the east things. You said 5psi. Is that what you have the pressure regulator set to? Bump it up to 6psi. What’s your initial and full timing set at? The 1806 has the adjustable air valve. Have you tried tightening up the spring? I have a video on this if you’d like to check that out. Have you reset the floats? Checked to make sure there isn’t any trash blocking your rear jets? Bowls are clean?

[@nicksnarski5973]

The AFB is a good carburetor have one from the 90s ,it sits and the thing I don't like is the single fuel inlet with two floats,when one float needle sticks it will still run and you think it's the accelerator pump. Not

[@Perry_Fan]

Well to address the starving issue when you're turning left can't that be resolved by adding a fuel inlet on both sides? It already has one on the passenger side but can you add it on the other side as well?

[@MuscleCarSolutions]

I’ve never had that solve the issue.

[@ordinaryillusion]

Never had such awful support in my life than from Edlebrock. I have called them seven times this week and never got an answer, only on hold, once for an hour before I hung up. When they eventually replied to my email after 6 days they said, "650 is good for your truck." No explanation, no suggestions, no effort. I returned the carb unopened that day. I am glad you had a good experience, but I will never deal with them again.

[@MuscleCarSolutions]

I can tell you they are like most of the bigger companies these days - very understaffed, especially on their tech line. Unfortunately hiring techs isn’t easy. In some cases they train for over a year before they’re allowed to handle the complicated stuff like valvetrain. I’ve spent almost three decades in the automotive aftermarket and these past three years have been the worst I’ve ever seen and it’s not going to fix itself overnight. But that’s also why KZbin channels like mine have grown. We’re filling that gap.

[@jeffreymiers8793]

May seem trivial, but I dont like that I cant directly hook a TV cable up without getting another piece to bolt on. Maybe it doesn't apply to all models, but I can get a Holley with that built in pop the cable on it and done.

[@MuscleCarSolutions]

Neither brand has all the hook ups for every type of transmission.

[@loudfast1261]

Super stuff ty. Looking to do a tbi to 1406 edlebrock on a clean stock ‘95 5.7. I will be adding the 1/2 inch phenolic 4hole spacer - is that too thick in your opinion? Also which manifold would you go with? Thanks again, I saved this video for future reference too!

[@MuscleCarSolutions]

You’re pretty limited on that generation small block. If it’s stock, then the performer series is what it will want. They make that in an EGR or non EGR version.

[@HoosierSquarebodyGarage]

Ive got a bad bog situation on wot, but not when you roll into it slowly. Ive removed the egr, changed coils, checks the timing and advance, new plugs/wires, cap/rotor, new fuel pump/filter, tuned for 20 units of vacuum, i dunno what else to do. Its on a chevy c10 305, using a edelbrock 600 cfm. Factory intake with the edelbrock adapter.

[@MuscleCarSolutions]

Well there’s a number of things here. It is a 305 and any sub 4” bore engine is a little difficult to tune in stock form. They’re rather gutless. Take some fuel away on the accelerator pump and see if that helps. Move the rod to the hole furthest away from the pivot point and see if that help. Have you used the calibration kit to tune the carburetor yet? That’s your next step. You said you tuned for 20” or vacuum. What did you do? Changed the step up springs? What color did you put in?

[@HoosierSquarebodyGarage]

@@MuscleCarSolutions i haven't changed the springs or needles, only the idle mixture screws. Carb was "new" when i got it from a guy. But it was obviously used, and i have no idea if he changed anything

[@MuscleCarSolutions]

@@HoosierSquarebodyGarage ah. Well mixture screws have zero effect on wot operation. Get a calibration kit and start tuning. Try the accelerator pump change I mentioned. I have tons of videos on that and the process. Right now no changes have been made that will start you on the right path to eliminating that bog. Chances are high that you’re adding too much fuel.

[@HoosierSquarebodyGarage]

@@MuscleCarSolutions alright, thanks!

[@MuscleCarSolutions]

@@HoosierSquarebodyGarage once you get started and you have any questions, don’t hesitate to ask. Glad to help if I can.

[@psychotrucker9880]

I been trying to get part number 1475 for over 8 months with no luck. I need the 4300 squrter

[@MuscleCarSolutions]

I’ve responded to this same comment you’ve left a number of times. The .43 nozzle does not come in any of the factory carbs. Right now, that’s all Edelbrock is concentrating on is getting out finished carbs out the door. If it’s not something that supports that, the chances of getting one anytime soon is not good. I probably have one that I would be willing to sell you. I’ll have to look and see. I recently sold a couple assortments of that part number to folks needing them so I’ll have to see if I have any more left.

[@dannovello1577]

Please excuse my ignorance, but...not to old to try to learn at 63. I have a carter competition series, 625/650? cfm, from early 90's on my mopar 340. I believe it is an "AFB" based carb. I was wondering what is the difference between an "AFB" carb vrs one of the new Eddy "ABS 2" carbs, (old timers kicking in...I think I have the letters correct) I am curious if the new ABS 2 carbs are a better design, for the street? etc. I have issues with mine when it gets hot, heat sink no doubt. (my fault of course), But I still enjoy cruzing my '68 B'cuda "time machine" (1st car back on the road again), still trying to "get" how to tune these things. : /

[@MuscleCarSolutions]

AVS2 has the adjustable air valve secondary and annular primary boosters. It’s an amazing street carburetor.

[@bryanslabaugh2831]

So I’m looking at getting a AVS2 to replace my quadajet on my hunting truck. The mountains have a lot of up down and side to side. I’m not doing crazy stuff but if I got a Avs2 and did the off road mods to it (spring in a Acc pump nozzle and spring in the needle) would I have trouble when on a side angle? Again nothing crazy but would it be enough to uncover that metering jet? Thanks!

[@Nathan-i6m]

What are your thoughts on a edelbrock avs2 1406 600cfm converted to blowthru? On a 4.8ls gt45 turbo. Thanks

[@MuscleCarSolutions]

@@Nathan-i6m just because details matter; 1906 would be a 650 AVS2. They don’t make a 600. I would not waste my time with it. There are too many details that the Edelbrock just won’t be able to handle under boost. Fuel bowls are too small. Step up springs aren’t going to work with that set up. The accelerator pump is likely going to push fuel as it’s tied to the drive side bowl and will see pressure. You’re asking it to do something it’s not designed to do. Stick with a 4150 style carb that can handle those demands.

[@fernyloks47]

hey i have a sincere question. im building a 1991 chevy pickup single cab 350 5.7. im building it for off-road purposes it has a rollcage and fiberglass prerunner fenders. i want to remove the tbi and go carb. can i get advice about going that direction.

[@MuscleCarSolutions]

@@fernyloks47 it’s an easy swap. There’s not much adjustability with the factory TBI. At least with a carburetor you’ll have that but give up a little bit of that factory efi dependability. Honestly if you’d rather keep an EFI set up and the dependability plus remove all the variables that an off road vehicle sees, the Edelbrock ProFlo4 port injection efi is a great upgrade.

[@Cristian-jc5og]

I have a stock pontiac 350 with basic upgrades and plan to replace my two barrel , my question is what carburator should I run because I like autocrosding my car but I dont want to starve it but also a good cruiser, love driving my car everywhere

[@MuscleCarSolutions]

Check out my video on how to choose the right size carburetor. How to Choose the Right Size Carburetor kzbin.info/www/bejne/fqqXpGx4aZiMg5I

[@Cristian-jc5og]

@@MuscleCarSolutions thanks, I appreciate that but do you have a video on what style of carburator is better, like a Holley style compared to a tradition 4 barrel Carter like edelbrock

[@MuscleCarSolutions]

@@Cristian-jc5og talked about that in several videos. It’s situational. Define the situations you’ll be driving in the most and select the carburetor that beat fits that situation. Primarily street driving, cruising, limited performance? Edelbrock performer or AVS2. Primarily at the teach drag racing, autocross, road racing? Go with the new VRS 4150 or a holley. That’s about as simple as I can describe it without going into all the details and why. What are you doing with your car?

[@Cristian-jc5og]

@@MuscleCarSolutions my car mainly is cruiser and loveing driving it often but occasionally like to autocross at the good guy shows , do you think the avs2 would be a good fit

[@MuscleCarSolutions]

@@Cristian-jc5og if you’re a mostly stock Pontiac 350, that doesn’t make a ton of power, but decent torque and will primarily be a street cruiser, it sounds like you have your carburetor type picked out. Now you need to just determine what size and you’re ready to go.

[@johnnyturbo8460]

I would be interested to know if a set of stiffer anti sway bars would help the fuel starvation under hard braking. Yes the fuel wood still slosh to one side, BUT if the vehicle remained flatter through the corners, the fuel bowl wouldn't have a lower side to it( or be dipping to one side) there for not affecting the level of fuel as much. Your thoughts? And or maybe adding a slightly faster fuel pump?

[@MuscleCarSolutions]

Unlikely. Autocross, road race cars are set up with adjustable, stiffer suspension components and the improved handling creates additional forces pushing fluids around in the vehicle. I like the line of thinking though.

[@johnnyturbo8460]

@@MuscleCarSolutions lol yes I am well aware. Is there room between the walls of the carburetor and float bowl to weld a baffle or a very short 90 degree ledge above the jet height on the opposite side of the fuel bowl wall? Similar to oil pan baffling ? To help hold the fuel from sloshing upwards?

[@MuscleCarSolutions]

@@johnnyturbo8460 floats take up some space that has to be accounted for. Ensuring the jet continues to be fed fuel is another concern. I’ve seen folks try and JB Weld in some baffle type restrictions for the fuel to slosh. I used to have some much narrower floats that I had made that would allow for some room to work inside with some of those ideas, but they’re long gone. Would be pretty easy to mock up and try though.

[@johnnyturbo8460]

@@MuscleCarSolutions cool. That's what I was thinking. Where there is a will, there is a way.. your great video has now given me the will to solve that fuel starving issue. I am interested in that avs2 Carborator. Now I think I will get it and see if I can solve that issue.

[@MuscleCarSolutions]

@@johnnyturbo8460 yup. It’s a task for sure. With more info online you might be able to find a float body in the right narrow size that you can alter to work and then start experimenting. One of those things I’d like to try one of these days down the road when I’m retired and have some time! Let me know if you have any luck with it!

[@Mr.E-gi5rq]

I really like the edelbrock . Most trouble free carb ive ever used.

[@chicanoperez6377]

Phenolic spacer, how did you set the carb directly on it? The ports underneath on mine wouldn’t clean when I hit the throttle

[@MuscleCarSolutions]

Don’t know. What spacers are you using on which carb?

[@chicanoperez6377]

@@MuscleCarSolutions the one I have is the Edelbrock 8726 which I believe design for q-Jets not Edelbrock

[@chicanoperez6377]

I have the AVS 2 on a stock intake 1970 c 10 pickup. 5.7

[@chicanoperez6377]

I found the one I think I need 8725

[@jasonmatthew5055]

On cold start Holleys are better. It does seem to be an easier carb to set up on a new car. But I have had 3 Edwlbrocks that all leak down over night making hard morning starts.

[@duanewood2329]

Today’s fuel will percolate out of the bowls. I have a 1980 Corvette and the engine bay is really tight. I’ve tried the insulated spacer and it didn’t improve it. However, if you change to an electric fuel pump the bowls will fill much faster. You can even install a momentary push button on the dashboard to fill the bowls before cranking the engine.