I have heads and cam with very high compression 11:3. I am thinking about getting a procharger and obviously I need to get my compression lowered, besides changing my heads what are my choices?
THANKS

 

dished pistons.

what casting heads are you currently using and with what gasket thickness?

 

You can go with a dished piston but heads would be your easist way, and even with the dished pistons it still might not be enuff. Are your heads milled? What cam are you currently running?

 

Bang for the buck you can switch back to your stock heads (retain upgraded valvetrain) and you will sacrifice minimal after the procharger upgrade. You can run 8 PSI all day long on stock internals. Also, make sure you have a cam that is supercharger friendly and doesn't bleed your boost. Expect 500 HP/TQ numbers with the proper cam and setup @ 8 PSI