89formula#1

I have a 750 holley double pumper with a Proform mainbody, Proform says it will flow 750+ cfm. What kind of horse power limit do you think this carb has?? My goal with this car is to go into the 10's, Its a full on drag car, no street time. I figured mid 11's on motor and then around a 125 shot to get me into the 10's.. thanks everyone, Oh and did I mention I am going to try to do this with iron vortec heads cause no1 says I can lol

five7kid

iTrader: (14)

There's a local '70 Nova 355 (~3000 lbs going down the track) with a Proform 750 main body that runs high-10's at 5800' NA.

I wouldn't worry about the carb being sufficient to the task.

xpndbl3

iTrader: (5)

carb won't be a problem especially with you spraying your way to 10s. Also I think to go from mid 11s to solid 10s you'd have to spray 200 as well. Also from your motor combo in sig, I see low 12s on motor, not mid 11s at all. Not enough cam or compression to hit mid 11s on motor alone. I would have gone wild if this car won't be driven on the street at all, but it looks like a typical vortec street combo for a spirited daily driver.

5678TA

there was one guy running a 750 mighty demon into the high 10's on this forum..

89formula#1

yea thats not the motor im using, it used to be my daily driver about 2 years ago and thats the motor i had in it. Its completly gutted with a custom harness and drag suspention now. I have a 4-bolt 350 1-peice block I am going to build, 355, all forged assembly, solid roller cam with around 11.5 compression depending wut kind of shot I am putting to it, I will probably end up going with some AFR heads if I have the money but for now I am gonna port the vortecs and see wut happens for the hell of it. What kind of crank HP would a 3000lb car need to go low 11's ?? thank again

xpndbl3

iTrader: (5)

383 with a big solid roller and 11.5:1 compression with AFR heads should be good for high 10s. IHI and others on this board have done, just not with a stick vehicle. Hope you have a 9" rear and a nice stout driveshaft along with a roll bar/cage/subframes.

urmomshot77

depends on alot of factors, tires, gearing, tranny, etc, but a rough idea is around 550 hp id say would have you in the mid 11s, but dont hold me to it lol.

89formula#1

yea it will have a 8-point cage, 9" with a spool and 35 spline axles, and I have a spohn 3in extreme duty steel shaft.. I might be getting a street car and putting this trans in it so i would go with a th400 with a transbrake but its all up in the air right now, If I want another street car this project gets pushed back further so I have to make a decision because my budget doesn't allow both at once lol

5678TA

for 3000lbs to get low 11's, around 400+rwhp is needed.. but drivetrain is a HUGE factor.. so about 500-525 crank hp is needed..

Tech @ BG

With all else working properly (actually getting the power to the ground) to run 11.00's would take 445 HP at the wheels, which with an 18% (average) loss through your driveline you'd need to have at least 543 HP at the crank.