Edelbrock VRS-4150: INSIDE LOOK, NOT A Holley Copy

One of the things I have noticed on my previous ‪@EdelbrockUSA‬ VRS-4150 carbs is folks who think it's just another Holley knock off Copy
Today we take a Deep Dive into the internals of both a Holley HP built by Allstate Carbs in NY [phone] that will be used in testing on CASPER vs the Edelbrock VRS-4150
While they may look similar they are completely different!
#edelbrock #holley #dragrace #automobile
Thanks for watching
Andy
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[@NathansMoparGarage]

Very nice carb it would be even better if was more cost effective.

[@UnityMotorSportsGarage]

I would tend to agree. But given the price point is between the Holley HP and XP and has many more features than those two carbs it offers a lot for the money. My most important part is knowing that these carbs are built right here in the US and the quality is top notch. I like a deal as much as the next guy but I see it as an investment in the US jobs Andy

[@81mont]

I think the price is pretty good, from what I've seen these might be better than the Holley XP carbs for a couple hundred dollars less.

[@nova467spanker]

have you priced carbs lately? ATM is about the best bang for buck but depending on what color and cfm you get, they too get in the $800-$1000+ range. Shoot, my 750 Mighty Demon was $775 back in 2007 and i was complaining then about that lol.

[@Pisspantsgarage]

Great vidja Andy aawwwoooo🤙🏼

[@flinch622]

There are alot of vids out there - this is the first I've seen that took a look at the metering block. Thanks!

[@karlbaumann708]

The tunability of the Edelbrock reminds me of my little 4160 that I had on my 429 back in the 80s. I bought a Weber Power Plate and moved the primary metering block to the secondaries, making it a 4150. I spent the next few months collecting Weber jets, air bleeds, and emulsion tubes. I had no air/fuel monitor and was no expert tuner, but the drivability and throttle response were drastically improved. It was also nice to be able to change jets without removing the fuel bowls. It was a lot of fun.

[@UnityMotorSportsGarage]

Karl, the Weber plates were really cool! Hope all is well your way. Now that PRI is over I need to have you on for a live chat Andy

[@karlbaumann708]

@UnityMotorSportsGarage It really was a lot of fun to work with. Given Edelbrock's manufacturing relationship with Weber, I wonder if the concept could be resurected. Let's do the live chat soon. I'm ready whenever you are. Take care!

[@jb314stl]

It’s good to see Edelbrock keeping up the innovation. I might try one of these carbs out.

[@kennethrudd6645]

They work very well even out of the box...

[@MaverickWelding]

Thanks for showing us the differences. Looking forward to info on tuning them on a tunnel ram as I’m building a T-ram 466. I have a pair of 800dp’s for it but no access to a dyno to tune them. If these new Edelbrocks might be closer out of the box I might go that route.

[@UnityMotorSportsGarage]

I've been really impressed. They are miles ahead of other box stock Holleys Andy

[@landoncustomclassics]

Definitely would go with the edelbrock!

[@dondotterer24]

Thanks Andy. Finally a real improvement over the Holley. You guys are going to make war in the woods even more exciting.

[@UnityMotorSportsGarage]

I'm looking forward to War in the Woods.. It will be a crazy good time Andy

[@huskynox1]

This is a nice carburetor, no doubt. I owned one for 2 weeks when they first were released, but returned it because there was no support. After 2 years, I see there's still no support, or MANUAL. It'd be nice to see a manual released that explained every aspect of the metering block. Anyone familiar with how Holley 4150's are tuned will most likely understand most of the metering block on this carburetor, but as described in this video, there are many additional features. But again, no instructions. For example, the additional transfer slot jet that's plugged, is this port basically the same option that some Holley metering blocks have, allowing the IFR to be located 'high' or 'low'? Also, the small brass tube that's in the venturi, which is called the 'intermediate circuit', what exactly does this do? Edelbrock did a great job explaining the circuits on their Carter clones, but have yet to release such instruction for the 4150 style carburetor. With so much adjustability, someone could get lost very quickly. Why not release a manual that describes, at least in general, what each of the 4 bleeds (per venturi) will affect? The included "Installation Manual" doesn't even have an image of the metering block..?

[@UnityMotorSportsGarage]

It would be a great idea to release a more detailed manual on the VRS carburetor. I will email them about that.. Thanks for watching Andy

[@pauldhiman8369]

Finally… lets see a tuning video step by step

[@buzzwaldron6195]

This is BS! Eddy copied Q-Jets, then Carters, and now Holleys...

[@DennisL-n6i]

Hence now the best of all of those in a one off design. 😊 ​@@buzzwaldron6195

[@frankjones4094]

I like to think it's equivalent to comparing an original small block Chevy to an LS. Looking forward to you going more in depth. Thanks Andy.

[@ldnwholesale8552]

The VRS is better,, unlike an LS that is far worse!!

[@nys-gto8042]

My only concern is the total height of the Edelbrock. Certain cars like 442, G.S. Buick and GTO have limited hood clearance. I'm completely stock except for a 14 x 3 air cleaner and it barely clears., otherwise the Edelb might be a good change. Thanks for another great video Andy!

[@Davey-Drums]

I'm already using a tiny air cleaner to get my hood closed. Finally, I have sufficient reason to just add a bubble on the hood, and use the nice, full size aluminum air cleaner I have sitting in the box.

[@BigBlock402]

Great Video, Team VRS of the Tunnel Ram Mafia... I believe I may try out the VRS on a small cubic inch motor real soon.

[@UnityMotorSportsGarage]

Team VRS/TunnelRam Mafia to the Front! Andy

[@mikedimaio1237]

That VRS looks very good. Would love to see you driving Bottle Rocket, I hope it happens.

[@davidmoore9482]

Casper might have been a friendly goast but he's 1 mean truck

[@gregleenyit]

Excellent video Andy the VRS is an extremely nice piece wishing Y'all a Happy and Healthy New Year

[@donaldhalls2189]

Great information, and comparison, thanks for sharing, all the best to you and your loved ones

[@UnityMotorSportsGarage]

Im glad you enjoyed it, Thanks for watching Andy

[@bluecollarcook]

Great comparison and explanation.

[@UnityMotorSportsGarage]

Thanks Brother! Hope y'all have a great new year's Andy

[@GorhamWorks]

Cool video, I haven’t got my hands on one of these carbs yet. I would really like to, the overlapping circuits has my interest peaked. I’ve played with a bunch of 4150s and just dipping my toes into dominators. Seeing the 3 circuit tech in 4150 flange is great!

[@alleyoop1234]

I worked in a carb shop for many years back in the 80's, and all I can say is that Eddy is one awesome carb!!

[@UnityMotorSportsGarage]

Thanks for watching Andy

[@buzzwaldron6195]

Which one? Eddy copied Q-Jets, then Carters, and now Holleys...

[@MVPisME383]

​@@buzzwaldron6195they're all the same company now comp cam, lunati, Edelbrock, Holley. Go on a Google binge and see all the brands that are all under the same umbrella company it'll blow your mind, they have a monopoly on the market

[@MVPisME383]

I wish I'd ponied up and got one awhile back when I went from avs2 to a Holley street hp only because I've always ran Edelbrock but I got that Holley factory refurbished for half the price

[@Sleeperdude]

Very interesting I was wondering what the difference was.

[@UnityMotorSportsGarage]

Yeah they are completely different on the inside circuits.. now comes the fun part of dialing them in on CASPER thanks for watching brother hope you and your family had a Merry Christmas Andy

[@nhra7110]

great video Andy. Edelbrock certainly did some re-engineering improvements on these!

[@UnityMotorSportsGarage]

Thanks, they certainly did. Andy

[@frizzellracing]

The venturas (spelled that wrong I’m sure ) are not symmetrical like the Holley they are more “cone” shaped. I really believe that help the air flow across the boosters. And the small victory we no long have to drill the little hole in the blades to compensate for a big cam to get it to idle. As soon as you bolt that carburetor on you know it’s a different animal

[@UnityMotorSportsGarage]

its a change you can feel as soon as you drive it! hope all is well your way Bobby Andy

[@frizzellracing]

@@UnityMotorSportsGarage we are doing great brother I hope you are as well. And I can also say the Galaxie is very happy with its pair of VRS

[@UnityMotorSportsGarage]

@@frizzellracing I cant wait to see the ole Galaxie make a pass.. its going to be wicked

[@PhilDodgeFury]

this looks impressive Andy . Good information as usual 👍

[@UnityMotorSportsGarage]

Thanks for the kind words, and for watching Andy

[@markcarter5491]

Great video Andy. I once had a screw fall out of a holly, it caused two cylinders to scar and lost 2 piston to be replaced along with 4 valves and seats. I love the intermediate circuit definitely holly carbs need this. I got a 511 in FE that needs a carb. I will be trying one out, thanks

[@UnityMotorSportsGarage]

That design has always made me nervous.. Im glad Edelbrock fixed it Thanks for watching like always hope all is well your way Andy

[@Davey-Drums]

I gotta have one! Was waiting for the 850 CFM. I saw it is finally available.

[@UnityMotorSportsGarage]

You won't be disappointed Andy

[@timbof1016]

I bought the 750 vrs and I’m about to bolt it on in another week or two when I get my heads out of the machine shop. I’ve been waiting to see a video on this subject after a year of looking at this carb. I pulled the trigger and bought it anyway.

[@UnityMotorSportsGarage]

You will not be disappointed, Thanks for watching Andy

[@damianlindsey6177]

A better way to compare would be using a firebird and camaro analogy. Same basic beginnings and are similar in 50% of the design but turn out completely different. We moved a built turbo 5.3, th400, and 9in from a 2002 camaro that had an intimate affair with the gaurdrail, and put it in a 2002 firebird and the car picked up almost 2 tenths. We are thinking its the better air flow around how the car is shaped vs the Camaro.

[@brianb5779]

Only really unfortunate thing that sucks is the larger size so for those who are running super close hood clearances this is a no-go.

[@Crazy8ts]

Very nice presentation and very cool channel...your friendship with Vizard is paying off, can definitely see his influence on you.

[@UnityMotorSportsGarage]

Thanks for the compliment! It means a lot. Thanks for watching Andy

[@stevewalters6853]

Very intriguing but I wonder about parts availability on down the road.

[@UnityMotorSportsGarage]

Most of the soft parts are interchangeable such as jets, squirters, needle and seats, etc. the main thing will be the metering block gaskets which is Edelbrock # 13101/2 Thanks for watching Andy

[@stevewalters6853]

@ Thanks for the video and information Andy I’m ready to buy a new carb and this series of carbs had been on my mind, perfect timing.

[@ldnwholesale8552]

Stock up on spares, not as easy to get

[@ProjectFairmont]

Holley based for sure, with notable design improvements. I like it.

[@johnelliott7375]

What is the name of that man's channel with the Nissan that 3D prints stuff. YOU have a great weekend and I will enjoy your show! Hopefully you had a great Christmas!

[@UnityMotorSportsGarage]

Same to you John, his channel name is in the Video Description of the 3D printed intake video Andy

[@Mike-Olds-1]

I would like to know what the dyno numbers would be between the two carbs in the video. The eddy is usually around 150 to 200 bucks more than a Holley type carb and the increased height might be the difference in cutting a hole in your hood or not. I do agree it’s a better design but is it worth the trouble/price ? It would be interesting to see the differences in power. I have seen the comparison to a Quadra jet but that’s a totally different thing

[@ldnwholesale8552]

The VRS is comparable to a Holley XP which here in Oz is about $500 dearer. HPs are still quite good but no comparison

[@mikef-gi2dg]

I have been waiting for a good explanation of the VRS...GREAT JOB. Would on of the VRS carbs be a good fit for a 350/383 in 350 to 400 hp rangs, or is that too mild for this carb? You know DV, makes good videos, plays with gasoline, living the life!

[@UnityMotorSportsGarage]

Edelbrock tested the VRS on a 600hp BBC and then one of the edelbrock engineers put the same carb on his Slant 6 Mopar kzbin.info/www/bejne/rHPEfqN4f7t0atksi=HdSzSIpMlfVdoic6 Thanks for watching Andy

[@larrythompson7802]

Are these carbs available on a boost referenced model? Have a 671 supercharger on my motor.

[@UnityMotorSportsGarage]

Not as of yet. Andy

[@silverbell800]

Do you think the VRS would be a decent carb for economy? Like if I wanted to splurge on a good carb for a hot street car, is there enough tunability in it for economy/part throttle purposes?

[@timbof1016]

The tuneability of this carb is out of this world.

[@UnityMotorSportsGarage]

one word yes. while its a performance carb the ability to tune every circuit will help you obtain your goals thanks for watching Andy

[@bcbloc02]

Makes me want one for my diesel! 😂

[@UnityMotorSportsGarage]

😆 Andy

[@No1414body]

I like that they have released the VRS 850 and 650 carbs

[@UnityMotorSportsGarage]

yeah they just released a 950cfm and 850cfm E85 carb Thanks for watching Andy

[@imjulianeral]

I own a VRS carb too and I'm starting to get preocupied because there is no a repair kit after 2 or 3 years after the initial release. There are the gaskets and float sets but nothing else. :(

[@ThePaulv12]

I think Edelbrock missed a bit of an opportunity here. In the main metering circuits it might've been a good idea to the put user adjustable 4 corner restriction screws (similar to idle mixture screws). The user then doesn't need to disassemble the float bowls every single time a main jet change is called for. Would be a great feature that.

[@UnityMotorSportsGarage]

it will be good! thanks for watching Andy

[@johnelliott7375]

I'm going to have to look into this VRS and save up for one! I hope you have a great day today and enjoy your weekend. If you see this please send me the name of the 3D's printer channel.

[@Thumper68]

More height means more atomization. At the same time it could cause clearance issues on some vehicles.

[@Mynextproject_74]

That's great info!

[@UnityMotorSportsGarage]

Im glad you enjoyed it. Its a great modern upgrade to the old 4150 carb Andy

[@turbo32coupe]

Looks like a copy of the Mighty Demon 850 with annular boosters. Great carb. Much better than a Hollely.

[@UnityMotorSportsGarage]

The BG is pretty much another Holley Copy, the circuitry is the same Andy

[@turbo32coupe]

@@UnityMotorSportsGarage The BG Mighty Demon was very much an improved Holley. The internal design was the same. However, all the circuits were adjustable with screw in air bleeds and idle jets. It was as perfect a carburetor as could be made. With annular boosters and 4 corner idle, it worked perfectly on a Victor single plane manifold. It held exactly 11.1:1 AFR on my 452 cu. in Ford FE from 3500 to redline. I gave up carburetors years ago. All my engine now run port fuel injection controlled by a megasquirt. Part throttle AFR are much more accurate. The FE now sports 8 stacks, ITBs. It's about the same cost to have fuel injection as opposed to a carb.

[@warrenrodrigues6248]

Have any of you seen an old Fuel Curve 4150 out of California?

[@UnityMotorSportsGarage]

I can't say that I have Andy

[@genemanno1533]

Very nice review. But this Edelbrock carb is too $$$$ for street car for my use. Yes, understand quality cost money. But because of cost I gotta stay with my Quick Fuels. Even QF costs too much at todays prices. Glad I got them (2) a few years ago. Honestly pleased with them but a lot of time was spent modifying passages & tuning them. Basically QF everything is too rich. I’ve found area of air/fuel ratios that seem to enhance performance for street. For street car even the old Holley from the 60‘s is tunable with some passages/restrictions/jets modifications. Thanks for video.

[@LoneWrencher]

i had a screw came loose on my holley 850 and it went down in the motor and wound up in cyl no 7 and it beat the piston up and cracked the cyl wall

[@UnityMotorSportsGarage]

That has always made me nervous.. but I've been very fortunate Andy

[@yurimodin7333]

I know its technically not a street carb but i wish they made one with a choke.........also it looks like they outclassed the Holley XP

[@UnityMotorSportsGarage]

having messed with XP's in the past, I can say you are right. The XP is also $300 dollars more Thanks for watching Andy

[@landoncustomclassics]

Cant be a copy it will eat a Holley!

[@kevinvannoy]

no matter how you slice it they’re still holleys. size for size they can both be tuned to run identical. nothing more nothing less. 😉

[@outlawbillionairez9780]

Andy, seems like Casper is really digging out of the hole, now. What's your 60' now, compared to your race with Tony?

[@UnityMotorSportsGarage]

High 1.40's now compared to the 1.70 with the broken Sprag against Tony

[@smokenbrokegarage2709]

It may not be the same. But edlebrock had to copy holly to get there

[@russgregston4757]

Oh , much like when they took the Carter AFB and tried to make it better... Blegh. Now they took the plastic metering block idea from the thermoquad !!! LoL some of us older guys know how that went...

[@bigboreracing356]

@@russgregston4757 There was absolutely nothing wrong with a thermoquad. The majority of older guys were to stewpid to understand thermoquads. The main issue was knuckle dragging neanderthals such as yourself over tightening the screws when putting them back together

[@UnityMotorSportsGarage]

Having spoken with folks that formerly worked for Carter, their carb business was going under and Edelbrock bought the Carter carb division and many of those same folks work at Edelbrock even today. The metering blocks are billet aluminum Thanks for watching Andy

[@russgregston4757]

Cool, it looked like thermoplastic.

[@tonycolca2241]

It appears edelbrock took it's time and did a great job of engineering this carb. I doubt they will actually come out with a street version. MAYBE

[@UnityMotorSportsGarage]

This carb does really well on the street. Now if you live in a really cold climate you might miss a choke. But I drive Casper quite a bit in cold weather 45°F and it does fine Andy

[@lte008]

This has nothing new that the high end Holleys haven't had for years. Can't say it's not a copy when it's based on the same Holley design.

[@ldnwholesale8552]

I will disagree, a 1957 Holley has no real similarity with a HP/XP. 4160 goes back that far but from my recollection 4150 is a mid/ late 60s piece. The Edelbrock is annular,, something Holley did and dropped. I found an annular was a far better carb, far more driveable. This on a road race car. I specced out an XP, no other Holley compares. The VRS is a better thing all round than anything except an XP. Which is here in Oz far more expensive. The one piece design is better, annular is [in my case] better, the metering is better than my HP. In short a better piece. Mounting all of these carbs sideways however is WRONG. They are designed for fore and aft fitment

[@UnityMotorSportsGarage]

The 1957 Tbird came from Ford wearing the first 4150

[@mikeg4163]

Need a 4500 or bigger 4150 style carb….from edelbrock

[@UnityMotorSportsGarage]

They just came out with a 950cfm version and E85 850. Hopefully we will see a 4500 soon Andy

[@jakegorman7121]

Side by side they are identical but no they didn't copy anything.... right

[@racerd9669]

But they are only 850 CFM

[@fastec5]

Whats only 850? The VRS comes in 650, 750, or 850?

[@UnityMotorSportsGarage]

Thats right, plus now they offer a 950 and 850 E85 Thanks for watching Andy

[@racerd9669]

@@UnityMotorSportsGarage If they have the standard 1 3/4 throttle blades they cannot be any bigger than an 850 WET FLOW not dry flow, I do not know of any carburetor that works W/O fuel in it.

[@hangonsnoop]

Given your extensive knowledge of Holley carburetor tuning, you are well qualified to compare tuning the new Edelbrock with your experiences with Holleys.

[@UnityMotorSportsGarage]

Thanks for the kind words. It's going to be interesting to see how I can find tune them.. I will say based on what I have seen Edelbrock did their homework on them Andy

[@rexmasters1541]

AND ITS A HOLLEY COPY!!!!!

[@scottosborne8735]

BMF

[@oscaracme]

Looks like a Braswell copy.

[@DANTHETUBEMAN]

That's a Holley HP copy, THERE IS NO WAY YOU CAN SAY ITS Edelbrock's DESIGN. It's reworked, so was DEMON. That's a Holley double pumper DESIGN, the end.

[@ldnwholesale8552]

4150 inspired no doubt. That is where the comparison ends.

[@DANTHETUBEMAN]

@@ldnwholesale8552 modified 4150, nothing new,, not one thing

[@bigboreracing356]

The Edelbrock is designed to make full blown racing engines easily streetable without major modification, therefore it is most definitely a Edelbrock design. The Demon carburetor was a POS from the very beginning. We could swap our trusty 750 double pumpers with Carter AVS carbs and donkey stomp anyone who used a Demon on the street.

[@DANTHETUBEMAN]

@bigboreracing356 Carter is a needle and seat design , holly is a vacuum air fuel bleed design, this Edelbrock's DESIGN is pure Holley

[@UnityMotorSportsGarage]

@DANTHETUBEMAN it's actually what I would call the final evolution of the 4150

[@joe-hp4nk]

f it's a module carburetor it's a holley copy.

[@FOSTERSFARMGARAGETV]

Got Queston? just built a sbc 355 it's on a run stand just got cam broke in with a performer intake, I just installed a Edelbrock TTR1 on some old school stock double hump heads, comp 492 lift cam, 30 over, Previous owner of ttr1 had a pair of Holley 1850 vacuum secondaries on it. I'm in process of rebuilding them at moment. My question is I just mounted two summit 600 knock off holley's on it? This combo work well? or should I run the 1850's? Or change to Edelbrock's carbs? And do you have an idea (ball park) of what horsepower engine should make with this setup? Thanks for your videos or be lost without info you share!

[@Wuggieee]

Holley all the way