Quote: ive got a stock bottom end 1971 383 in my dart and just changed the cam to the comp extreme energy 268 and it really turned out great. the vacuum isnt anything to write home about at 12 or 13 at best . im running a 650 demon carb and the engine has plenty of top end. im probably running right at 9:1 CR with milled heads on it.
Cool, thanks for the info.
I'm running manual brakes so vacuum isn't really an issue.
