I checked the flow on my fuel pump today. It took about 35 seconds to pump a gallon of fuel.This seems like enough to me but I was told this weekend I need to see more like a gallon in less than 15 seconds.Its gas dominator on a mild 454. I run the pressure at about 6 psi and the floats barely trickling out the sight plug.

Given Horsepower x .50 lb fuel/hp = lbs of fuel for given horsepower
for a motor similar to yours

to add i like the 50% more rule

let's do the math!!!

1 gal of fuel in 35 seconds = 102 gals per hr
3600 seconds / 35 seconds

102 gal X 6 lbs per gallon = 612 lbs of fuel per hr.

612 lbs of fuel / .50 lbs of fuel per HP = 1224 HP

so will it support 1224hp? no way, LOL this is free flow, would it support 400 HP? i would say all day long.

Joe

Using that math, my Enderle "0" pump will support up to 3200hp lol.

I'm guessing this thing to be closer to 550HP, does that sound like enough to support that?

Used to work for a guy that was fond of using what he called "fuzzy logic". Most of the time it was maddening stuff.
But here is my attempt at fuzzy logic:
What is your car's 1/4 mile ET?
How much fuel does it burn in a pass?
Fuzzy logic would say if the OP had a 17.5 second turd, and it could drink every drop of fuel his pump can push out, that would equal 1/2 gallon. (35 seconds per gal as O.P. stated).
Of course, the fuzzy logic fails when you consider that maybe the engine was starving lean, and it might actually be capable of drinking a full gallon, and running 12's, but the pump couldn't produce enough volume. All of this probably sounds meaningless, but my point is that many of the automotive formulas out there are not useful when it comes to racing.
(Remember the laughable "Carb Size Calculators" that even Holley published - which used Max RPM and Engine Displacement as inputs? They all basically told you a 454 turning 7,000 needed about 675 CFM max?)

All that being said, I would imagine a 1050 Dominator may be a bit large for a "mild" 454, (but your definition of mild could = someone else's wild).
And if it is a really mild 454, I think you are fine. It does matter where the pump is mounted, and how the system is plumbed, jetting, RPM, gearing, rest of combo, etc, etc. Pay attention to whether the car noses over down-track, any misfiring, compare your MPH to cars with similar ET, and definitely check the plugs. Or buy/borrow an 02 sensor setup, or find a shop with a fully instrumented chassis dyno.

Is this a Red pump, by chance?