ap72, I thought flat-tops with the 64cc Vortec chambers would run my octane requirement over pump-gas range? FYI- I don't have heads or intake for the motor at present. The aluminum Vortec heads are attractive because of the weight savings. The project car once had a much lighter engine (rotary) and I would like to avoid too much weight up front.
Last edited by Zeeb; 12-21-2009 at 09:52 AM.