Dyno Results: Putting A Dominator On A 4150 Manifold

I show the power difference from putting a dominator on a 4150 intake manifold. I also tested whether putting on a 4150 Carb on a 4500 intake, made the same power.

[@SealofPerfection]

I had a 454 old-school motor, 12:1, .637" solid cam, closed chamber rectangle port heads, Edelbrock C-427 dual plane intake. Had a BG modified 850 that supposedly flowed like 1030cfm. Came across a new BG modified Dominator. I was getting ready to go bigger, and thought that carb would be too much for the 454, but picked up that exact open spacer just for the heck of it. Picked up over a tenth, immediately. And MPH. Faster 60-foot. It was better everywhere, plus dead consistent. It works. I didn't believe, but I did after that.

[@michaelcaroscio2504]

I think the part that often gets overlooked on a dominator is its booster/bore position. It is far more spread out over a 4150, which most likely helps it distribute the fuel a lot cleaner to all the runner's. So a well tuned dominator is going to be hard to beat.

[@doncarlson8391]

And thats why they named it the Dominator, lol. Thanks Eric!

[@thefounding5879]

The one thing I would like to point out is the drivability of the dominator using a 4500/4150 2” spacer on a 4150 intake manifold. It speeds up the velocity under the Venturi’s and helps make for a crisp running engine on the street, even if my cam has a .722 lift with a .312 duration. I never popped my trans into neutral at a stop light and it never bogged or farted taking off.

[@chevyrc3623]

That's pretty cool testing that dominator is pretty cool

[@r6duck]

Now that was awesome information for the SBC crowd. Thank you

[@ecannon649]

I just bought the HVH Dominator adapter spacer for my 436 race sbc. I will post the results here when I test it at the track. Going from a Holley hp 950, I hope to see a nice gain from this swap. Thanks for all your videos.

[@jerryhovet2991]

Eric - this is extremely interesting to me. I spent quite a bit of time playing with dyno sim software to match the actual dyno results of my 460” BBC. What I realized was that power (especially torque at 4000) improved drastically when opening the Performer RPM plenum to simulate dimensions closer to a 4500 carb, and increasing carb CFM values to 1000. It practically mirrors the gains you are showing here!!

[@FORCFED]

Awesome stuff Eric 😎👍💪

[@jodysmith3662]

Great Video Eric!

[@xlr8r3VA]

Is it possible the Dominator made more power on both intakes because the Dominator is less of a restriction than the 4150? I would like to see a 383 small block with a 750 double pumper vs the 750 Street Dominator. Bet the Dominator wins there too.

[@yarrdayarrdayarrda]

It's cool to see your Edelbrock 2970 intake mods are the same ones I performed on mine when I built my 406 some 10 years ago. I never did care for the cloverleaf pattern. I ran mine with a 1/2" 4 hole spacer.

[@Lobo-tommy10]

I really like this channel

[@kennyrmurray]

It was hard to tell but it looked like the open spacer has air crashing at the entrance and the HVH misses that. Thanks Eric love the videos!

[@bobbyhaskell2048]

Hell yeah. That was awesome. Thank you!

[@amateurism1]

it would be awesome to get some high-speed video inside that intake manifold, I bet what’s happening is that four hole spacer is blocking the pressure waves coming out of the intake manifold, out through the carburetor, I also think the dominator's bore spacing helps with that. Sound is pressure waves, if you can hear the engine running through the carburetor, that means that there is sound coming out through the carburetor, which means there are pressure waves from your engine that traveling out of your intake manifold out of the top of your carburetor, something about those spacers helps those Dynamics make more power. Or we can just accept the mystery and run it! I love your videos Eric thanks. I often find at work we suffer from analysis paralysis, studying something to death, trying to make the best next decision when developing a product-when what we should’ve don is just slap something on something else and test it, I love your slap some thing on top of the engine and test approach. The results are very interesting.

[@slickrick5735]

Love that old style Victor Jr

[@kylemilligan752]

So the old Vic Jr, dominator carb, and the trick spacer still edged out the 2970 dominator intake, dominator carb, and trick spacer? Cool testing Sir!!!!!! Thank You!!!!!

[@WeingartnerRacing]

Yes it did

[@jcnpresser]

Love these tests. I got a sbf. I feel likei scored Saturday at the ford fest swap meet. I found me a Victor jr 8.2, old school with no made in USA badge on it. Just hope it’s as good as the Chevy version as is for the ford.

[@wayneskelly4297]

Awesome video! We recently tested something similar. Wr had a vacuum guage hooked to the intake. 406 pulling to 6800. 950hp-1.4" vac. 1050 downleg Brawler- 1.1"vac 1050 annular 4150- 1" vac 1050 Dom on an HVH spacer .8" vac. The 4150 based "1000 and 1050" carbs measure like and old school 850dp. Keep up the great info!

[@FABRIC8TIONUNLIMITE1]

Very Interesting.

[@nickstephens2913]

I've heard the 1050 doesn't actually flow 1050cfm like it's advertised

[@suicidal_racing]

id like to see the spacers tested on a efi deal. im wondering if its purely just fuel related or if its also where the main stream of the air an the air speed to the ports entrance is playing a role. which intern helps when its caring fuel.

[@flinch622]

Venturi centers vs runner dividers seems to figure large, but maybe also... boosters being a little deeper in?

[@smilsmff]

Thanks again for sharing. I would wonder if Just racing with additional 2 inch tapered spacer vs 1050 Dominator and the best 4 hole taper to single difference is . the cost would be best if initatially using the most effective , as in what is shown here on Dynometer tests. and not having very Heavy race car of course.

[@minigpracing3068]

Have you ever looked at Torco fuel additives? I was running that in my little 125cc with 13:1 compression to bring the ethanol free 91 gas up to around 105. A lot cheaper than race gas, and there wasn't anywhere near me that stocked or would order the lead free high octane fuels. It seemed to work pretty well, only had knocking when the temperature changed enough that I ran out of main jet.

[@gordocarbo]

Been buying 6 pcks of Torco unleaded accelerator for a few yrs now, good stuff.

[@aaronpal2955]

I wonder if there is a second pressure drop when the fuel mix reaches the intake and providing a second step of cooling on the dominator spacer to 4150 intake.

[@peanutmathis5791]

I run a 1050 on a 4150 intake on my sbc with bowtie angle plug heads and I love it. Everyone says its too much carb. I say how does my exhaust smell when I blow your doors off.😅

[@slicepizza3263]

You made a giant Venturi.

[@ericschumacher5189]

In a previous video you have a shear-plate for the dominator-carb, that you mentioned was to be combined with the open 4500-4150 spacer. Do you still have this / do you intend to test the shear-plate?

[@WeingartnerRacing]

I tested that I just haven't shown it in a video yet.

[@bobbyhaskell2048]

​@@WeingartnerRacing good stuff 👍

[@Tims13ful]

Velocity beats volume.

[@chevyrc3623]

So what I have been told that if your out your carburetor sideways it make more power then having them front to back I had a buddy did this on the 2 barrol and made more power sideways then front to back I think it's an adapter I am not sure but if you change give it a try.

[@HowardAimes-ww4kl]

Erick, could please do a set of aluminum Buick 455, for porting demonstration. Thanks

[@WeingartnerRacing]

I don’t port Buick heads.

[@2camsam]

What jetting did you use?

[@jamiecarroll3330]

Is it worth switching to the 2970 intake or just buy the spacer and install the dominator on the 4150 intake?

[@kensmith8832]

Have you ever worked with a Predator Carb? I had one back in the early 1990's and tried to run pump gas to find the carb was designed for methanol. Stall RPM needed to be around 2300 for the carb to function properly. I liked the carb as it didn't pause when you stood on the gas.

[@I_like_turtles_67]

I regret never buying one years ago. They seem to be a cool design.

[@d-phoenix2198]

I am so happy someone else mentioned them, I have been obsessing over them for the past week yet no one really has any hard date on them...

[@kensmith8832]

@@d-phoenix2198 The Predator had issues with low vacuum and lower RPMs. My friends called it the Toilet and it would use 35 gallons to go 20 miles, but that was at speeds over 220 MPH.

[@d-phoenix2198]

@@kensmith8832 Their design is very innovative, shame Holley basically killed it. It would be interesting to see where they design would have gotten to by this point ~40 years later...

[@kensmith8832]

@@d-phoenix2198 Back in those days a Holley would blow the power valve with every back fire, the reason I got the Predator. But the Predator had a ceramic valve body that would break if you over adjusted the mix. Both carbs had a constant tax on the user.

[@paulferreira1603]

Would like to see a cross bar nitrous plate under the carb … most likely won’t kill anything but would be interested to see since it’s easy to do .

[@big3fan916]

Do you sell the AFR spacer , i didn't see it at your store , or should i get it from Jegs ?

[@WeingartnerRacing]

I do but they are back ordered.

[@big3fan916]

@@WeingartnerRacing Thank you for your reply ! is it the same one that Jegs has for 38 dollars ?

[@Johnson-uy9xq]

I didn't see the overlay but did the 4150 manifold with the dominator and the hvh 4 hole spacer make more power than the 4500 manifold with the dominator?

[@WeingartnerRacing]

No

[@Johnson-uy9xq]

@@WeingartnerRacing what was the power difference between the 2?

[@lindsaymcpherson4744]

Ive watched on youtube a red 67 corvette 560cid FAST class stock appearing running 9.10 using a dual plane , have you tried a dominator on a dual plane manifold ??

[@WeingartnerRacing]

Not yet

[@gordocarbo]

World came out with a lower rise dual plane that moves a ton of air

[@ChopperScott]

Hello Eric. That's a large correction factor. What type of weather are we looking at?

[@WeingartnerRacing]

It’s not a large correction factor. The weather data is on the screen. I have never and I repeat never had an engine make more power on this dyno compared to other dynos I have been on and I have been on ones all over the country. Not once at the emc did I make less power than this dyno did. I don’t think many of the other competitors could say that.

[@ChopperScott]

@@WeingartnerRacing I was just curious. Simple math tells me otherwise, but that may be normal for your location. The comparable data is what matters.

[@WeingartnerRacing]

Then why comment saying that. The da is over 4000ft. You can always bring your engine there and dyno. I don’t own the dyno and he doesn’t make it special for me.

[@ChopperScott]

@@WeingartnerRacing That was the answer I was looking for... over 4000ft. It makes sense with a density altitude that high. My engine would need the same correction for comparable data.

[@WeingartnerRacing]

You can come whenever. I will dyno the mule pull it off and put yours on. Correction may change with weather but the power numbers are still very close.

[@stephennelson6041]

cool test, please repeat when the dyno mule gets more cylinder head!

[@richardoliver1303]

How about 2 Dom's on a 8:7.1 bds blower gas and alky?

[@WeingartnerRacing]

I would love to if I had one.

[@timothybayliss6680]

I am still waiting for someone to say you wont see 10hp on your time slip from a 1/4 mile track

[@davidreed6070]

I have always loved the sound of an engine going through it's harmonics on a Dyno. The engine making more power on the Dyno with the 4500 doesn't mean it will go faster or quicker on the track

[@user-ch3nv5uy3k]

Ok

[@robertquesenberry8651]

4500 intake base and put a 4150 on it

[@WeingartnerRacing]

I did that the results are in the video.

[@TomGrooms2802]

IMO, at 600 hp both those carburetors are WAY too big. Chasing numbers on a dyno is one thing but I promise that thing would go down the track much better and be way more consistent with a 750.

[@jeffmccormick5648]

Always got this guy that makes you wonder why is he watching the video if he already knows more than everyone else.

[@WeingartnerRacing]

I can promise it doesn’t. On the 355 that made 580hp. It went .08 faster with a 1000cfm vs 750cfm.

[@TomGrooms2802]

I'm sure it was faster but this obviously isn't a max effort build. My argument is that it would be happier going down track and be more consistent with the smaller carb. Try it, you may be surprised. #airspeedmatters

[@yarrdayarrdayarrda]

Running less than 600 HP (forgot the ET of the time) but removing the 850 normally used and installing an 1150 dominator picked up the MPH by 1.

[@WeingartnerRacing]

I did it went faster with the 1000cfm and was just as consistent with the 750.

[@Airwolf1971]

First

[@user-mm1se7gy7e]

First what ?

[@svenforfifr1390]

@@user-mm1se7gy7e First posted comment. Has been an internet thing since the beginning of comment sections.

[@user-mm1se7gy7e]

@@svenforfifr1390 I know, but it's just stupid !

[@Airwolf1971]

@@user-mm1se7gy7e Post

[@gordocarbo]

So what