Procharger on Coyote?

[ProCharge5.0]

Originally Posted by TrueStreetTim (Crank pulley size / Blower pulley size X step up ratio) X max rpm= impeller speed Bold items are simply to separate the math I'm assuming a lot here as I don't have all your specs. So your roughly 630whp? I'll also assume you've got headers & full exhaust? P1SC-1's max impeller (max efficiency) speed is 65k. It should also be a 4.1 gear (step-up) ratio. Your blower pulley roughly a 3.60? And crank pulley a 7.5. So [I](Crank pulley size / Blower pulley size x step up ratio) x max rpm= 61.5k impeller speed @ 7,200rpm. So your around 95% the max efficiency. To see that kind of power on a P1 I'm guessing the car is around 12-14psi. What kind of psi are you seeing?

The car has 1 7/8" JBA longtubes, H-pipe/ no cats, and axleback. I don't know what size the pulleys are. I will measure when I get home. It makes 10.5 psi. Car is stock other than exhaust and procharger.