Need some advice on carb selection. I have a mild 440 .030 over, flat tops, 10 to 1 compression,590 cam unported sidewinders. It's in a 3000 lb (with driver) car with a torqueflite with a transbrake and 4.56 gears. The car runs 6.60 in the 1/8 @ 102 mph in summer weather. I need to find a tenth or a bit more to run an index class and I am looking at replacing the 750 holley that I am currently using with something bigger. I've looked at some 950/ 1050 4150 carbs but a friend who races a different brand claims a 1050 dominator will be faster than a 1050 4150 model. My question is this, does anyone have experience with this comparison on a combo similar to mine? These things are pricey and I'd like to buy the right thing on the first try. Thanks for any help.

Tough call. You don't need a Dominator for airflow since I doubt your engine is using much more than 800 cfm but a Dominator will almost always make more power than a 4150 carb.

If you are leaving on a brake at a fairly high rpm and the engine is always WOT going down the track then you might be faster with a Dominator.

Are you going to buy a new intake manifold or use an adapter?

I will probably use an adapter but I have access to another intake manifold to try (same style) with the 4500 flange if it turns out to be better that way.

my buddy's roadrunner 10 to 1 stock heads 590 cam 4.10 gears, 3500 converter ran 7.80 with a 850. we put my 1050 dominator on it and it went 7.50. It picked up in every increment and 3 mph. I haven't seen any big block not pick up with a bigger carb. as long as you have enough converter. The guy's at AED used to go over to Richmond dragway and give these guy's with 302 mustang's with 650 carburetor's. let them try there 850's and he told me everyone they did went faster. if a 302 can handle a 850 a 440 can handle a 1050.

You don't know anyone that has one they will let you try out.

As Andy said.. if your leaving off the TB at higher
rpm I would go 1050 dom.. I even used a 1050 dom on
my 405ci and was thinking of trying a 1150.... but if
your leaving at lower rpm the 4150 will be more responsive

What intake do you have now and are you planning on changing if needed?

I currently have it chipped at 3800 but the converter flashes to 5000. The intake I am currently using is a single plane team G with a tapered 1" spacer. A friend has the identical manifold with a 4500 flange I can get if I want it.

Another friend has offered me his dominator to try but we've been having trouble co-ordinating it between his schedule and mine. That still wouldn't tell me if the dominator was better than a larger 4150, it would just tell me that a bigger carb was better or worse.

oldbracket racer. what's your 20?

Springfield, Ohio. Near Dayton.

The Team G 4150 manifold is supposed to have better runner balance than the 4500 manifold. But you would need a 2" funnel adapter to run a 4500 on it. I'm leaning towards a 4500 carb giving you more power than the 4150. That being said, either way, I think you will make your index without an issue with either 1050 version.

Whats the rear suspension and does it spin at 3800
rpm... I loaned my buddy Randy(labrat rip)and we did a back
to back from my 850dp that he was using to my 1050 dom..
the dom made more power but he spun hard with the dom.. he
didnt spin with the 850 so due to spinning he didnt like
the dom.. but it did make more power... he never liked to
work on the suspension

As stated.......the Dominator will be faster

Car is a backhalved 4link/ coilover car with 14/32 tires that goes 1.40/1.41 consistently as I am running it now. I get that more power could require more suspension adjustments but I need something to get where I want to go. Thanks to everyone for the replies, I really appreciate it. Mostly it just reaffirms what I was leaning toward anyway, but it sure helps to get the opinions of people with experience. Thanks to all.

If you have money in the budget I'd buy a new intake manifold. A std port Super Victor would work if you have the room for it or go with a Mopar 4500 M1 intake.

The few times I've dynoed a motor with a 4150 TG intake the motor had a pretty big dip in the power curve, and/or didn't take the load well from the dyno.
I never found this to happen with the 4500 YG intake.

IMO, swap the intake and carb.
I'd run a 1050 4500, and either try that 4500 TG intake, or find a m1 4500.
I don't think that combo is going to want a really big intake manifold.
If you want something you could buy new, then I'd use the std Victor intake and the HVH super sucker/adapter.

Obviously you could try the HVH adapter on the 4150 TG first, but I think the Victor would be quicker.

For a 4150 intake the new Trick Flow intake is nicer (in my opinion) than the Victor. So that is another option.

I will look into intake options. I really hadn't given that too much thought yet. Thanks again for the information.

Years ago I did some testing on several different size carbs. on a stock stroke 440 bracket motor starting with a Holley 600 D.P. and then up to a Holley 950 HP on a Eddy TM7 intake in a car similars to yours with a trans brake in a 727 for Division 7 S/ST on a 4 tenths pro tree back in the the late 1980s. I ended up swapping the intake to a Mopar M1 4500 flange intake manifold and a Holley 9375 Dominator 1050 CFM non HP carb. at the end of the year. That car picked up over .6 E.T. in the 1/4 mile and 7 to 8 MPH increase with all of those changes It went faster and quicker every time I increase the CFM on the carb. These stupid Mopar 383/440 wedge type motors love more air and fuel