Finally went and got the car dyno'd on a super flow chassis dyno. I was happy with the numbers. Just made 2 pulls. Pull 1: 450 h.p, 504 tqk Pull 2: 451 h.p, 506 tqk. Running a carter 172 gph fuel pump. Pressure was all over the place. First pull feel to 3.5 lbs., second pull only 5.0 lbs. Dyno operator said I should pull an electric pump on to get constent pressure. Then bring the car back and we will start tunning some more horses out of the motor. In jegs quick fuel has a new 140 gph, 6lbs of pre-set pressure (no regulator needed). What do you guys think,will this pump do the trick or not?

Thanks
kwik66
468 motor
3500 stall, turbo 350
12 bolt 4:11
QA1s all 4 corners and Dick Miller full rear suspension, with anti roll bar

Are you sure the pump is the problem?