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.

[michaelcaroscio]

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.

[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.

[chevyrc]

That's pretty cool testing that dominator is pretty cool

[doncarlson]

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

[thefounding]

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.

[rduck]

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

[xlrrVA]

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.

[jerryhovet]

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!!

[ecannon]

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.

[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!

[kylemilligan]

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 Thank

[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.

[amateurism]

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.

[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.

[wayneskelly]

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!

[nickstephens]

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

[minigpracing]

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.

[bobbyhaskell]

Hell yeah. That was awesome. Thank you!

[flinch]

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.