O.K. To the point. '95 GT with edelbrock RPM 2.02 heads. Crane 1.7 rollers rockers. Stock pistons. What is the biggest cam I can go with before my valves will hit. Have 6 lb supercharger also. I am running a B 303 at present..just want MORE POWER..HEHEHE...

Not a bad combo.

Have you thought of just changing your pulleys to get more boost? Like maybe 9-10lbs

My twin turbos produce approx. 30hp per pound of boost! That is on top of what the engine produces on it's own

I would love to run about 9 lbs. but the "by-pass" valve is $140 and the pulley is another $70 to $90 and if I go over 10 lbs then I will need to 0-ring my heads...see what I mean..LOL

I'm not a very big fan of O-ringing heads. Personally, I'd rather blow a head gasket than destroy a piston, but others would disagree.

As far as cam selection goes. The best $325 you could spend on your car is for a custom ground cam to match your combination. Check out www.flowtechinduction.com and contact Ed Curtis about it.