Since I started driving with a vacuum guage on my dash, it's gone from from 10mpg to 14mpg! Simply installed a brass T adapter and ran a hose though the firewall. Then just keep vacuum in the optimum zone while accelerating.
@Dannysoutherner2 жыл бұрын
For the average street motor an off the shelf HEI is perfect. They are dirt reliable unlike the Ford Durafail system. If you have the misfortune of losing an ignition module they can be gotten pretty much anywhere. Walmart used to carry them. I have made the mistake of using esoteric fancy gear and having it die on me leaving me on the end of a hook. Edelbrock carb and HEI is a bulletproof combination for daily use.
@garylemay92752 жыл бұрын
Where do the wipers attached to the distrutor go to
@SteveXNYC5 ай бұрын
Since resistor type plugs actually “resist” some of the spark energy, non-resistor type plugs actually deliver a more powerful spark. It is for this reason that most racing plugs are non-resistor types. However, in most automotive applications, a resistor plug is required for proper vehicle operation.
@hmayerv8 Жыл бұрын
All well and fine for high performance engines. Seriously the stock points system and thereafter the stock GM HEI is the perfect distributor for stock engines. They've run these on millions of American made cars from 70s onwards. Time tested perfection.
@bobstephens88514 жыл бұрын
I use vacuum advance on full manifold vacuum to help my engine idle better with a big cam, also keeps plugs cleaner.
@aboutmyfathersbusiness83243 жыл бұрын
Agreed; It also drops my idle temps 20 degrees.
@cjbert67903 жыл бұрын
On some engines it really helps. The reason being that it can increase the vacuum signal to the carburetor.
@jesse.jsmall06522 ай бұрын
What if you have a vacuum secondary Holley tho or do you just plug the ported vacuum
@ViewThis.4 жыл бұрын
On my supercharged engine I first used a regular distributor and separate coil. I later changed to HEI 50,000 volt and it made a huge difference, especially in the strength of the idle while in gear with my foot on the brake.
@susanhenderson2322 Жыл бұрын
Seems like lots of folks commenting on here dont understand base timing, totatiming advance and vacuum added timing
@jayhagsrc33226 жыл бұрын
I'm pretty sure the vacuum advance advances timing because at part throttle the air and fuel in the cylinders isn't as dense as wide open throttle, therefore it takes longer for the mixture to burn. Vacuum advance isn't going to make a difference doing wide open dyno pulls. Vacuum advance is done for driveability. If you have too much vacuum advance the motor will "ping".
@AustinHarmon19944 жыл бұрын
On my 350 vortec i set my timing at 10 and total was 34 and dint use vacuum advance for that reason. Didnt want any pinging.
@DANTHETUBEMAN2 жыл бұрын
@@AustinHarmon1994 how is your gas mileage? It would be great to see if you can improve mileage and keep performance.
@earlbrown Жыл бұрын
It's nice to see someone that ACTUALLY knows how vacuum advance controls the curve under real world use. At WOT vacuum advance doesn't nothing. I could tell they weren't fully up to speed when they hooked up the advance. They ran the hose to a ported vacuum source, then had to move the distributor. The whole point of a ported vac is it does nothing at idle. So if they had to move the distributor, they throttle blade was open too far on the carb. Which doesn't explain why the HP didn't move much. If they had to back off on the base timing setting to maintain base timing, they should have been lacking full advance up top. ....so this video isn't really a tech video, it's an ad for D.U.I ignition systems.
@joealbert7773 Жыл бұрын
I don't understand why the timing had to be reset when you connected the vacuum advance. Vacuum advance only adds timing under low load conditions (high vacuum). It has no effect on high load applications such as a dyno pull. The maximum timing under these conditions is controlled by the mechanical advance. The real purpose for vacuum advance is part throttle fuel economy. That's the way most vehicles are driven.
@rockinbass017 жыл бұрын
you guys should make a video explaining how to tune the vacuum advance like how much to safely ad and how to tune when it drops out
@Gettinbentoffroad5 жыл бұрын
It helps mainly at low rpm when the car runs lean at idle the higher vacuum also at low rpm advances your timing to burn the fuel better when you open up the advance does nothing.
@hotrodray68025 жыл бұрын
I dont believe that they actually know how, based on this video.
@jamyers19715 жыл бұрын
@@Gettinbentoffroad not low rpm, but at low LOAD. Vacuum advance simply adds timing at low load, regardless of rpm
@earlbrown Жыл бұрын
@@hotrodray6802 They don't. When they had to adjust the distributor after hooked up to a ported vacuum source,they should have known the throttle blade was open too far. What's 'odd' is they had to back off on the distributor timing, didn't change the stops on the mechanical advance, yet the engine made the same power up top... With a backed off distributor. Not to mention, ported vacuum is a sloppy way to lower emissions at idle by intentionally making a car run poorly by filling the exhaust with unburned A/F. That kind of ''tuning'' has no place on a dyno or when dealing with professionals setting up a vac advance distributor. Manifold advance if what you want when you're tuning a car for part throttle real world use and gas mileage. (and the weights, springs, and stops set accordingly). A lot of 'experts' think manifold signal causes pinging and detonation due to the signal source. When they don't realize you can't use ported stops and base settings with a manifold signal. Same as you wouldn't use a distributor set up for full manifold vac and send it to a ported vacuum port. There's a whole lot of 'turners' out there that don't know how to tune. This wasn't tech, it was an ad for D.U.I ignition systems. That's why they had to close the gap with the stock unit. So the dyno curve would show a loss of power. A good HEI will light off only 400hp all day long if it has full voltage running to it.
@braddenning161711 ай бұрын
I built a GMC 292 inline 6 , no expense spared in the build ,about 11.5 comp. forged 60 pistons,floating pins Major headwork, Lump ported ,175 rollers , ALL BEARINGS COATED, THE LIST GOES ON ! I bought the DUI distributor, basically it sucks. First thing is some of the module screws were loose, and for the inline 6 they give you a 2" adaptor that goes on the end of the main shaft to reach the oil pump ,rather then having a dedicated shaft for this application, Now you have to carefully file the adapter on the one end so it fits TIGHT with no play and is then held in place with a tiny roll pin, you have to "V" out the recess but on an angle this is precision work and no room for any tolerance. . the slightest bit of play will cause the adapter to vibrate and damage the distributor gear, Beside other shit first Dyno pull was 366HP, We swapped out the DUI coil with an Accel coil and picked up 10 HP !! 3 times we did this. Ended up building my own distributor with parts I had , Never will I recommend DUI !!! and made another 9 HP !!! side by side it is exactly the same as an E-BAY special !!! That two piece distributor shaft not only stupid but was incorrectly machined , ebay HEI with a accel coil and MSD module beat the DUI IN HP, Quality and cost .
@MiguelSanchez-st3pv3 жыл бұрын
Just got a dui dizzy for my ski boat excited now 😁
@whirlwind88252 жыл бұрын
manifold vacuum to the distributor only ... wot timing should be set and then lock the distributor, small springs on the weights ... you want to launch advanced .. then taper off to mechanical timing all in at wot... and always use mechanical secondaries for better response
@doncroswe11796 ай бұрын
The experts in my area , told me to not use the vacuum advance at all , instead set the timing that they suggested, in my case it was 38° before top dead center ☆ my motor is a 440 mopar thats some what modified * headers, cam & such ☆ its mostly street driven and go's to the drag strip once a year ☆ When i go to cruise ins , people want to know why my vacuum advance is blocked off with a pastic plug ☆ i tell them, thats where where it runs the best 😊 , they usually walk away is disbelief ☆ however, these folks do not run their car's at the strip ☆ in ending,, i will say this, im completely satisfied with the with the performance of my car , street or strip 😊 thanks for listening ♡
@pauljanssen26244 жыл бұрын
You bring your engine up to 10 degrees before top dead center on the firing stroke either by watching the valve train or compression you'll see the trigger wheel on HEI is pointed citizens points lineup and you go a hair father that's when the spark will happen you can literally shut your engine within 1 to 2 degrees by this method you won't even have to re-time your engine I've built many engines with this method knowing where the distributors fire I really have to move them after checking with a timing light basically I learned it from timing VW engines and mg midgets always Prime the engines with a dummy distributor before you 🔥 them up and it's not hard to build a oil priming tank out of an empty R134 tank just have to weld A fitting on the bottom and put some oil in it and a cap with the Tire valve to pressurize the tank
@ABs70nova Жыл бұрын
8 years and I literally have NEVER seen another sbc with the same heads/intake as me until now
@sidecarbod14416 жыл бұрын
I don't think you guys fully understand what the vac advance system is for or if you do it was not clear in your video. You have established that the engine wants 36 degrees at WOT and that is what it is always going to want. The vac system should be setup to add more timing above this figure of 36 degrees to allow extra advance when the throttle is just cracked open (regardless of the RPM), the extra advance allows for the fact that the flame speed is low when the VE of the engine is low. Your total timing may go up to something like 50 degrees but only under very light throttle settings. You guys seemed set up the vac system then pull a WOT run on the dyno, of course it is not going to make any difference with that sort of test.
@hotrodray68025 жыл бұрын
Well said. 👍👍👍
@thomasbutcher44245 жыл бұрын
Good luck racing with that setup!
@ben543224 жыл бұрын
This comments are gold. Thanks for explaining
@walkingman91714 жыл бұрын
Yes you are correct, he doesn't know what he's talking about with the vacuum advance.
@aboutmyfathersbusiness83243 жыл бұрын
Agreed; Vac Adv also keeps the engine cool in long parade idles.
@philipmetzner72437 жыл бұрын
You describe the function of the vacuum advance as if its connected to manifold vacuum but you used ported vacuum. There is already too much confusion about where to hook up the vacuum advance.
@fredmendez48375 жыл бұрын
Holley carbbhas ported vacuum and one ot two ports also ruun manifold vacuum...one of the side connectors i believe
@mtnman62785 жыл бұрын
I was told when HEI came out in 74 they were using .060 on the plug gap and it was burning through the center of the rotor and going to ground through the dis. Shaft so they reduced gap to .045 if this is true you are talking going to over .050 to .055 on gap.
@colehara5 жыл бұрын
Mountain Man You're right. I had that happen. I reduced the gap and it didn't happen again.
@mtnman62785 жыл бұрын
@@colehara yeah I just remember the gap was actually .060 and they reduced it to .045 after it was burning through. I was told this by my boss back in the late seventies when I worked in his shop
@danielbrealey29245 жыл бұрын
On a stock HEI this is true. These DUI ignitions have a much better coil and can create a much more intense spark, allowing you to open up the spark plug gap more than stock. The bigger the plug gap the nicer the engine will run at idle and part throttle. When your building forced induction engines and haven't replaced the ignition for something more powerful you find you need to decrease the plug gap so the spark doesn't get "blown out". The higher the cylinder pressure the more difficult it is for the spark to jump across. Reducing the plug gap solves the problem you face at WOT but at the cost of slight ignition stumble or a very slight miss fire at idle and part throttle...
@mtnman62785 жыл бұрын
@@danielbrealey2924 "blown out" meaning the spark wont happen Or wont jump?
@fredmendez48375 жыл бұрын
Some engines had gap up to .080....the 1974 olds 455c.i. used an .080 inch gap...in 74 most chevys sblock and bblock used .060 inch gap, and eventually went down to .045 i believe...and it was because ignition was not capable of firing over .060 gap...I remember it was causing ignition failures
@DANTHETUBEMAN2 жыл бұрын
Great video own dat zapper, and big gap plugs. I been doin this way 4 yearz
@Hot80s4 жыл бұрын
you failed to mention a small detail those nylon screws on the dizzy, very nice touch
@REDZ28won3 жыл бұрын
Those nylon screw break and will strand you. Get steel screws so you wont get stranded!
@rodolt26597 жыл бұрын
It sounds like the main difference is the higher coil voltage and larger plug gap plus custom timing curve for the given engine setup. Timing curve really isnt a curve however its really just a rate of increase of advance per rpm increase or a slope. I would say its degrees/rpm. I suppose you could create a curve with progessive rate advance springs and or multuple springs of different weights combined. So take a stock HEI put High Perf Coil on it and larger plug gaps and proper advance springs you prettt much have created a DUI clone.
@72troy4555 жыл бұрын
Pretty much, they ain't the only game in town.
@walkingman91714 жыл бұрын
Factory HEI was current limited to 60,000 volts and that's not how vacuum advance works. This is just a glorified commercial.
@1967davethewave5 жыл бұрын
I love the HEI. I run them on all my GM cars. But one thing that was wrong, most stock cars in the 1970's with HEI distributors had the spark plug gap set between .045 and .060. so setting your plugs at .045 was actually on the low side of what stock would have been.
@shelbyavant50813 жыл бұрын
Nope.
@skywalkeraviation842 жыл бұрын
Nope that .060 advice was rescinded by GM(they had all sorts of problems)… with HEI the standard is .045, but anything down to .035 will be ok and depending on setup could actually be better. That doesn’t go out the window with new high tech ignition, but it’s no longer the standard/hard fast rule.
@1967davethewave2 жыл бұрын
@@skywalkeraviation84 I'd love to see a link to the TSB that shows GM "rescinded" the .060 spark plug gap. There are plenty of engines where .080 was the recommended gap. Just look at mid 70's 455 Olds, Pontiac 455 used .060 as did many others. It doesn't really matter what the recommendation is though, what matters is what works. I have raced for many years with an HEI and I always gap my plugs at around .060. And that's even on my 69 GTO which has 11.5 to 1 compression. As long as your wires, cap and rotor are in good shape and you have the voltage it works very well.
@1967davethewave2 жыл бұрын
@@shelbyavant5081 What was the gap on GM cars with HEI distributors set at in the 1970's then?
@shelbyavant50812 жыл бұрын
@@1967davethewave They started at .060, and it was too much. Olds did try .080, and it was also too much. The componentry doesn't last with those gaps. Hell, .055 is a lot. That's why they changed everything to .035-.045 IN THE 70s, and that range hasn't changed in 40 years.
@frankzito16607 ай бұрын
I ran 6.80s in the 1/8 with a fairly strong solid roller 11 to 1 327 in a vega with at th400 and a 4.56 12 bolt. Stock gm hei. Shifted at 7000 rpm. Absolutely bone stock distributor. Switched to a DUI and didn’t pick up any et or mph. Ran 38 degrees total on both.
@JohnDoesItAll13 күн бұрын
Higher compression is harder to ignite. My stock HEI worked great on my sbc 400 with stock compression. I built another at 13.5:1, and it misfired around 5500 rpms. My buddy told me to get an MSD 6AL and coil, which cleared up the problem. She zings well over 7500 rpms, which required me to get a rev limiting chip.
@FastBowtie3883 жыл бұрын
I'm confused. What does a vacuum secondary carb have to do with the vacuum advance? Mechanical secondaries still has a ported vacuum connection for the distributor.
@jesse.jsmall06522 ай бұрын
No answer as of yet huh
@timokuusela57945 ай бұрын
GM has different coils for the HEI. The standard one uses normal plug gap. The stronger one uses different plugs that have over 2 mm, about 0,08 gap. I used to have a Buick -84 with 307, and it had that coil and plugs from the factory. When the coil failed, I went with it to the local speed shop here in Finland, and the guy looked at the coil wires and said "oh, it is THAT coil" They are of different color or something. I have a Ford Taunus (Taunus not Taurus, google Ford Taunus -82) that used to have a Pinto type 1.6 L four in it. I put a 302 to it, but bought a Hei with the Ford style base, Ditched the Ford strange ignition system. One + wire and good to go.
@jayleno56526 ай бұрын
i like their stuff DUI rev limiter live wires and mini VIP on ,y 355 7000 plus no issues and the vip was what made power over anything else i used
@SmudgyContent3 жыл бұрын
Mine failed from DUI distributors, within a year… though they are great about backing their products they over nighted me another, they’re not meant for dailies I don’t think…
@joshuamoore24_75 жыл бұрын
It would be nice if some distributer company made a top for a hei rotor company made a computer controlled ignition box like the ones that are found on modern engines. Like Ford's and some other ones.
@bkcrim53952 жыл бұрын
They're a little expensive but progression ignition makes computer controlled dizzys that you time using a timing table on the computer
@PatrickBaptist5 жыл бұрын
Gonna do this to my turbo stroke diesel.
@danielbrealey29245 жыл бұрын
Hahaha! I wonder how many people understood that was a joke...
@PatrickBaptist5 жыл бұрын
@@danielbrealey2924 LOL, I'm surprised it took this long for anyone to respond to that LOL, take care buddy.
@phillipchristensen23934 жыл бұрын
Did it to my duramax... I can run e85 now!
@40HudsonV87 жыл бұрын
Did I hear correctly this is a 604 cubic inch engine? I would have thought the stock horse power and tourqe numbers would have been higher.
@ScrewHeadJuNgle7 жыл бұрын
Its not referring to c.i. its the last few digits of the crate engine part number.
@moedog077 жыл бұрын
ScrewHeadJuNgle Thanks for clearing that upa
@stoneyswolf6 жыл бұрын
That's a small block the most Cid I know of right now in a small block is 454. I have a 406 myself but if I had a reason to do it over if stroke it to a 427.
@user-cy4gy7zm7u6 жыл бұрын
its a part #88869604 race CT crate GM New engine 350cid 400hp
@JAHISRAEL6 жыл бұрын
Yeah my 1970 Olds 455 has 500ftlbs torque and 425HP stock with standard ignition (but I am about to switch to a Summit Racing HEI )
@kCI2515 жыл бұрын
Oh, it's really a commercial for an HEI, not just tips.
@hotrodray68025 жыл бұрын
PD HEI is the best their is.... think not... go out into the real world.
@hotrodray68025 жыл бұрын
DUI means Davis Unified Ignition now produced by Performance Distributors.
@OldAndGettingOlder4 жыл бұрын
Yep. It's a commercial. Not for HEI per se, but for a particular HEI distributor brand. I hardly call this a tip video.
@paulpasternak20265 жыл бұрын
Not a single tip.
@chevyjones78182 жыл бұрын
Man nun at all
@earlbrown Жыл бұрын
They did show that you need to adjust the distributor after hooking up to a PORTED vacuum source. (which is wrong and shows the throttle blades are open too far at idle) And they showed that after backing off on the timing, the car made the same power up top (which is also wrong due to backing off the distributor causes all the ignitions events after idle being retarded) So I guess that's something.
@tomconner5067 Жыл бұрын
The plug gap! Sort of?
@Joe-bb5hf11 ай бұрын
Thanks
@dennisgray7509Ай бұрын
You don’t listen well do you
@stoneyswolf6 жыл бұрын
These dizzys are a good deal. I didn't need the entire unit so I purchased there module.
@docholliday66355 жыл бұрын
Timing that's referred to total timing. Vacuum plus centrifuge, and built in..8 degrees built in. Then vac time and centrifuge advance.
@sunking20018 жыл бұрын
I had a DUI in '97...is that the same thing you're yakking about?
@sharonburns47885 жыл бұрын
sunking2001 no,no .if you had a DUI you were drunk and arrested. Ha ha.
@johnnydavis83516 жыл бұрын
36*....??? kinda sounds heavy.... How does it respond to restarting when engine is up to temperature.... seems like something you could accomplish through Cam degree... Harmonic balancer tab typically only goes 20* or so
@realdeathpony5 жыл бұрын
That's pretty normal for a mild SBC. They have made adjustable timing lights since 1920. Just a tab and balancer line.
@cliffbennett33724 ай бұрын
Aren't you supposed to set Base timing with vaccum advance plugged off. Why set timing again?
@jennymann37043 ай бұрын
DUI 😂 nice never heard of it. I'm glad my timing marks are gone
@markrussell11009 жыл бұрын
I would have liked to have seen where you connected the wires.
@roadrunner0079 Жыл бұрын
Question if the gear bottom of the distributor fit sworn what did affect the advanced vacuum on the distributor
@Handlehandlebars5 жыл бұрын
How do these guys run a dyno yet dont know the purpose of vacuum advance.....such a confusing video. As mentioned below it supposed to add advance at low load high vacuum engine condition when an engine actually needs more timming...
@danielbrealey29245 жыл бұрын
Yep, your 100% correct.
@Gettinbentoffroad5 жыл бұрын
Which is caused why? Cause the engine is running lean.
@homefront31625 жыл бұрын
yup
@daveponder27544 жыл бұрын
Yep that's how to get it "timmed" (sic) right.
@terrypikaart43944 жыл бұрын
blake hastings Your so right, like on a heavy atuomatic car when it shifts at part throttle and lower rpms.
@Mcheal24742 жыл бұрын
If your rotor button is slightly off how will your engine run ??
@jimdavidson52088 жыл бұрын
Those garden hose wires are lovely LOL. Did you get those at Home Depot?
@TheHorsepowerMonster8 жыл бұрын
Ha! The wires are pretty standard at 8.8 mm, but the sleeves to protect against contact from the headers do puff them up a bit.
@kansascityshuffle85265 жыл бұрын
Can see the bunch of wrench heads who patented the name DUI cackling all the way to the bank.
@TubeKontrast5 жыл бұрын
hi, what is the way when the removal position is lost? the zero mark on the flywheel is finger on the cylinder 1 cable? I have made the fine marking before, but which gear position clicks is lost, is a Nissan H25 engine Forklift,
@robertmacpeek4246 жыл бұрын
@ 3:11 I'm confused. I've always brought cyl 1 to TDC on compression stroke first Then installed dist w/rotor pointing @ the "5:30" terminal (If your looking at an HEI cap w/the power, tach and ground connector @ 3 o'clock then this is the terminal just before the 6 o'clock position)
@shelbyavant50813 жыл бұрын
That's literally what they did.
@Pork-Chopper2 жыл бұрын
All this is wonderful n marvelous, cept' most street engines run between 2000 n 3000 rpm, Not, 6000 rpm. Street engines are better off with low down grunt at the lower rpm's for pulling n cruising, not at sky high rpm's which they hardly ever see, unless you're building the engine for racing. Properly setting up your drivetrain also will help to get the most out of your engine n maximize MPG...
@dickeymoore42644 жыл бұрын
Do all dui distributors come with a melonized gear for hyd roller camshafts?
@dansmith69903 жыл бұрын
2:53 watch
@larrycumbo2023 Жыл бұрын
I used a magneto never had a problem
@kainariylius3925 жыл бұрын
Too bad they don't fit on a tunnel ram intake.
@jerryvaughn98345 жыл бұрын
Does anybody know for sure what MSD recomends. As far as plug. Gap msd distributer w/ al 6 box
@davidwarland26804 жыл бұрын
i have 6al-2 and use Brisk spark plugs, 3mm gap, huge (118.11 thou)
@cjbert67903 жыл бұрын
Msd is high voltage because it uses a capacitor. The downside is a short spark duration hence they use multiple sparks at idle speeds to make up for it.
@melvinnewsome68217 жыл бұрын
HEI originall required spark plug to be set at .080, I have been setting gap at .060 starting in 1974
@utooberblooper6 жыл бұрын
0.035 to 0.045
@crawford32310 ай бұрын
DUI, HEI, Ari? Not one person bothers to explain what they are.
@scootergeorge95766 жыл бұрын
Great video. I own a 1965 Ford Mustang that I installed a 302 Ford small block wih an HDI distributor. It is conected to the original ignition lead with a resistor wire behind the dash. 1.5 ohms or so. What is the best way to get pesk voltage to the distributor and peak performance? I was going to bypass the resistor wire (pink) but it's a pain to get to. Anoter idea was a relay actuated by the existing igniton power wire feding power directly from the battery. What do you recomend? If a relay, which one? Thanks and once again, great video.
@Syrus548 жыл бұрын
lol... This "DUI" distributor only has 50kv, and you're talking like it's the Shit... My Normal HEI has 65kv, and I think it needs MORE.
@jimdavidson52088 жыл бұрын
Riiiiiiiiiiiight. LOL. 65kv what a joke. Lucky to get 40kv out of ANY HEI DUI what ever shit ignition.
@mcozpda33927 жыл бұрын
65kv ??? .. what brand ??? .. ????
@donrutter67657 жыл бұрын
I just bought a 65k distributor online on ebay, they are everywhere for $40 , I bought a set of 10mm wires to go with it for 30$. I cant wait to get this engine off the stand, and onto my running stand.
@79huddy6 жыл бұрын
Don Rutter don't run it it will eat the teeth right off your cam they don't index for shit ask me how I know
@classicskrt24224 жыл бұрын
Not a single tip, just a bunch of specs in your engine setup. Thanks thi
@michealurias30104 жыл бұрын
I have a 350 chevy in a 1973 blazer , the motor is new with everything else on it and won't start please let me know what tut I am doing wrong. I am puzzled about cause I have been doing this for 55 yrs
@aboutmyfathersbusiness83243 жыл бұрын
Check for fuel, Check for spark. You may be getting spark but the distributor is 180 degrees out of sync. Many put it in what I call fake Top Dead Center.
@jeffbraden782 жыл бұрын
It aint got no gas in it
@jdsimons61154 жыл бұрын
604 crate engine... with TBI valve covers 😆👍
@davidstjames_4 жыл бұрын
Yes! Similar were used on some other factory engines as well. Did you notice the two vents on the left side and none on the right side? It doesn't make sense.
@tombryan5653 Жыл бұрын
Are you run racing fuel
@Moparmaga-16 жыл бұрын
Oh good, well what's the cubes ? Its sweet
@dannypeacock39945 жыл бұрын
what is the spark plug gap
@Mal_ware_6665 жыл бұрын
It's perfect for people that have had a D.U.I
@smokey05sierra226 жыл бұрын
Where can I find a set headers shocker or split sockets 13/16 and 5/8"
@JohnSmith-bx1mp5 жыл бұрын
A store.
@ThisNThatGarage2 жыл бұрын
Did he really say HEI is weak????
@earlbrown Жыл бұрын
That's what you say when you make an ad for D.U.I pretending to be a 'tech' video. That's why they had to close the gaps on the plugs to show the stock unit can't light off 400hp. (which it can all day long). Otherwise, the two power curves would have most likely both fallen within the realm of tolerances. Did you also notice they had to move the distributor after hooking up to a PORTED vacuum source. Vacuum signal on that port at idle means the throttle blades are open too much. But, at the same time, they backed off on the distributor setting yet didn't lose any power up top???? Just fluff to sell D.U.I distributors. Nothing more.
@bigaparker19775 жыл бұрын
Conveniently named the DUI LOL.
@joen53325 жыл бұрын
Does vacuum advance have anything to do with vacuum secondaries to open up the back barrels
@ViewThis.4 жыл бұрын
I'm not sure I understand you're question, but I'll try to answer it: The two are not related. The vacuum that would open the back barrels is measured or "Seen" by what's flowing through the barrels themselves. The Vacuum for the distributor is seen below the barrels and serves a completely different purpose. One is above the throttle plates (back barrels), the other is below the throttle plates. If I'm wrong someone will come along and correct me.
@ashadams39568 жыл бұрын
Does the Chevy HEI NEED resistor or Non resistor spark plugs?? Can't really get a answer from anyone. hope you can shed some light on it for me
@telocho7 жыл бұрын
Ashley Adams The resistor is only to reduce interference on the car radio, not for performance reasons.
@danielbrealey29245 жыл бұрын
Electronic ignition systems like a resistor type plug. The increased resistance actually increases the energy of the spark jumping the gap of the plug. This only works with an electronic ignition like a HEI as the system is able to create enough energy to make this more intense spark. If you use resistor type plugs on a points ignition it will burn out the points very quickly. The low energy spark created by points ignitions are due to the lower voltage on the primary side of the ignition (which is done to make the points last longer). Electronic ignitions use the full 12v and when the magnetic feild in the coil collapses it induces a bigger, more powerful spark to be created in the coil. Points ignitions systems work the same way, but with half the primary voltage- so they will never be able to create a big powerful spark like an electronic ignition. Hope that helps. By the way, I've been a qualified mechanic for 19 years- I'm not an internet know it all just incase you were wondering... Cheers
@danielbrealey29245 жыл бұрын
@@telocho Condensors are used to reduce electronic "noise" in the car's radio with some ignitions. Plugs don't have anything to do with that bro...
@KGisthename2 жыл бұрын
Did you say that 604 makes 400 something hp? Thats so sad 😔
@TheHorsepowerMonster2 жыл бұрын
It's a Chevy crate, that's what they make
@KGisthename2 жыл бұрын
@@TheHorsepowerMonster That makes me sad. That thing is a behemoth and makes the same amount of power as my 383? Nice big heads too.
@TheHorsepowerMonster2 жыл бұрын
@@KGisthename I think we might have some confusion. It isn't 604 cubic inches. GM calls it their 604 crate motor because that's the last three digits in the part number. (They also have a 602 crate where the only difference is cast iron cylinder heads.) It is a standard 350 cubic inch engine that's generally used for spec stock car racing classes.
@KGisthename2 жыл бұрын
@@TheHorsepowerMonster gotchya!
@KGisthename2 жыл бұрын
@@TheHorsepowerMonster thats not bad at all for a 350.
@johnwolf14755 жыл бұрын
Your website is coming up as dangerous.. better have webmaster check it out
@walterstanfield36625 жыл бұрын
604 sbc?
@OldAndGettingOlder4 жыл бұрын
It's not displacement. This is a 350 engine. 604 is the last three digits in a part number (88869604). This is Chevy's CT400 circle track 400 HP create engine. There's also a 602; the CT350. Now you know.
@walterstanfield36624 жыл бұрын
Oh okay i gotcha thanks
@cheapshedkits2 жыл бұрын
Really, a name like DUI???
@earlbrown Жыл бұрын
It stands for Davis Unified Ignition.
@jessebaldwin72975 жыл бұрын
want a please all I want
@jesusgomez9915 Жыл бұрын
😊😊
@jessebaldwin72975 жыл бұрын
just add beryllium push rods and were gonna go some wear
@AlbertAugustine-e1fАй бұрын
Aglae Place
@mobilechief5 жыл бұрын
Can you drive drunk with it?
@markbarnhill63008 жыл бұрын
Dahh. !
@anthonyr10805 жыл бұрын
Well it's a great commercial for the distributor but you learn absolutely nothing but let me explain something to you you don't use vacuum advance on the High Performance Engine it's for station wagon so when your wife floors it to pass somebody she don't burn up the engine cuz she's running cheap gas. Hi vacume hi advance ok so far low vacume less advance step on the gas and your vacume drops so does the advance see it ment. To save the engine not make power now cruise and the timing goes back up for gas mileage also when you let off the gas you will see it spike up to like 40 for a few seconds this prevents back fire I got a lot more but you chew on that for now
@texasdoc684 жыл бұрын
Wrong
@KingJT804 жыл бұрын
Anytime you drive at part throttle you need vacuum advance stop giving bad advice for street cars.
@Moparmaga-16 жыл бұрын
604 cubes & only 400 and some change in power #s
@d-swank75996 жыл бұрын
604 is the part number not the displacement
@72troy4555 жыл бұрын
It's a 350ci SBC.
@tabbott4293 жыл бұрын
None of this will matter when the fastest thing on the road is an EV.
@204_mod_shop6 жыл бұрын
Ouuuu wow nice fancy gm motor only making 9.6:1. Compression 😂😂😂 my 302 makes 9.11:1 comeplte stock internals . 😂