I should be around 350-375hp. Can I just use the stock pump?

For sure
At 4.5 to 5.5 psi and 3 pints a minute...thats a lot of hp.

I am guessing I have a bit over 500 HP at the crank and running low 11's with my stock fuel lines and a $9.99 Autozone fuel pump with no problems.

You should be fine.

Silly question... Is the pump mounted to the engine with just a gasket in between or do I need a mounting plate with a hole? The motor I got must have had a electric pump because the fuel boss had a solid plate on it.

you have a plate that mounts with 2 bolts to the block with a rectangular hole on it and the pump mounts to that

stock fuel lines

are those 5/16" lines? or the 3/8"?

I am guessing I have a bit over 500 HP at the crank and running low 11's with my stock fuel lines and a $9.99 Autozone fuel pump with no problems.

You should be fine.


Id bet a bunch of money the car would pick up 2 tenths with a quality fuel system

http://www.camaros.net/forums/showthread.php?t=78896&highlight=fuel+pump

I remember this very topic from a few days ago. Looks like <=500 hp for the stock pump on a street car.

I have a holley mechanical without the regulator that pumps 7 psi from 850 rpm idle to 6800rpm redline on a 477hp 383. I ran a gauge from my carb inlet line to my cowl when I was in doubt as to how much the pump put out. I ran it for a couple weeks and then removed it and put it back on the inlet where it belonged.

you have a plate that mounts with 2 bolts to the block with a rectangular hole on it and the pump mounts to that
And there is a push rod that goes up inside to drive the pump

bravewink, I blieve 3/8 but am not sure about the hard line to be honest. Whatever came on a 307 equiped RS in '69.

DZ fool, I'll have to politely disagree. :) No way I am losing 2 tenths. The car never noses over, skips or drops MPH so it is not running out of fuel.

I will say 2 things though...first, the quickest I have run in the 1/4 has been in the 11.20's. With the converter swap I am looking for 11.0s. We'll see if it makes a difference. Second, I only run a 1/4 once a year so I don't have hundreds of runs for data like I do for the 1/8 but I do have a couple dozen.

I bought Eric68s old Carter mechanical pump so if I have trouble the back up plan is on the shelf.