Choosing a Combustion Chamber Volume?
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Choosing a Combustion Chamber Volume?
Is the advertised CC volume (59cc or 64cc) in LS6 heads before or after porting usually? In other words does it start with a 59cc CC, them have some volume added during porting? Or is the CC volume after porting? I'm not looking for 11:1, just don't want to pick a volume for 10:5 or so, and then loose some planned compression because the CC was enlarged during porting.