As topic says any of you guys running these? and if so did you find that it help you with keeping enough fuel to maintain a built motor

 

80 or 90 pound injectors are pretty much required on anything over 300 hp. Even then you'll probably have to run more pressure than stock. I guestimate with 90 pound injectors at 25psi in a 454 TB you could possibly make 400 hp, but this is all dependent on what rpm you make it at and your BSFC.

Whenever you swap injectors you have to start burning your own chips. There are just too many variables to tune via mail order once you get to this power level and swap that many parts. I'm running 75 pph injectors at 22 psi and I'm just squeeking by fuel wise. I'm guestimating i'm making around 300 at the crank.

 

Yeah those little holley injectors are rated at 22psi, so you would need like 35 to 40 pounds to support some big power. I 've run gm 55 lb injectors at 35 psi, with no probs.

Now I run gm 90lbs at 25 psi.