smokerZ28

What is the CC on a stock LT1 piston and how much compression can I get away with using the CC306 on pump gas? Also what head gaskets should I use fel-pro, anything else?

Josh-'04 GTO

With the CC306 you should be able to run 11.5-11.8 static compression ratio with 91 or better octane with out any knock issues.

I chose to run the Impala SS gaskets for a little extra compression due the smaller compressed thickness (.029") vs. stock or Felpros.

smokerZ28

thanks man, what about the CC on the piston, anyone?

97WS6SCharged

It should be a 4 valve relief flat top piston with 58 cc chambered heads. If I recall correctly anyway.