I'm rebuilding my GS engine and still haven't figured out the max. compression recommended 10.5:1, 11..5:1???...everything possible is being done (without adding turbo or nitro...maybe in the future), pulleys, headers, TB, exhaust,etc... I'll be boring engine 20thousands over. My car has been in the shop for almost three months and want it back baaaad!!! Any suggestions or recommendations would be appreciated.