Ok, here's another question, I'm sure it archived, but eveyone says different things on this subject. I'm running a Holley Black pump, to a 750 Double Pumper (soon to be a 825 Mighty Demon) what is an adequate fuel pressure to run at?? I've been told 6 psi, but the majority of people say 8-10.5??? I'm running between 8-9. Just wondering, what do you guys run and how much of a difference has the increase/decrease made for you??

 

I run 9psi to my 750 holley through a holley blue pump. I have heard 4.5-12 psi, but I tried all and felt that 9psi was the best for me. I don't think you will find one setting that is right for all carbs.

Ryan

 

6-8 is general for carb setting 9 is high, but so long as you dont overpressurize the needle seat, you should be fine, if you overpressurize the seat you'll flood her out and that'll suck.

 

Im running about 7.5 on my rat in sig...it runs pretty decent for a street car.

 

Thanks for the in-put. I'm switching over to a Mighty Demon 825 later this week. I think I'll run about 8-9 seems to suffice. This car was a 5 day build for spring, and it actually turned out a lot better than I hoped it would. It actually has some potential, on the street the car out-ran my buddies '86 S-10 with a 406 in it. He's ran 11.20 constintant at the track, and I got him by 2 1/2 cars on street tires!! I'm waiting to get the sub-frame connected before I go lauch it with stickys at the track, busted t-top glass in the face is really no fun trust me!!!