I remember reading somewhere that if you had just the pump installed, it was good to 500 hp. Is that FWHP or RWHP?

 

My last trans am was at about 450 to the wheels and I was using a high pressure 255 without a problem . We currently have a single hp 255 with a msd boost-a-pump in a friends SC'ed 96 Z at about 650 to the wheels again without probs .

 

Mines a Walbro 255. Didn't get the Racetronix kit. Just dynoed 446 to the wheels on the juice, but the A/F was pretty lean. Maybe I'll try a bigger fuel Jet...