doughboy4.6

I have 01 gt I am putting 285 to the tires n/a. I had a n2o backfire on the dyno that sucked so I am thinking of going with a supercharger what is the best and what kind of power will it put to the ground.

ShadowDrake

They'll all get you pretty much the same power in the end...

Twin screw design blowers (Kenne Bell) produce boost down low, and hold it all the way through...

Centrifugal blowers (Vortech, Paxton, ProCharger, etc, there's many) will have to wind up before you get into full boost. A lot of people around here will say this is "better" for the track because you can get traction from the launch... if you can launch well and get power to the ground, the KB will be better.

KB costs more than a centrifugal.

9psi will put you at 380? RWHP... I think anyway. You can always do more boost, but your short block won't hold up.

You're going to need to be more specific if you want more information.