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jims69camaro · 02-12-2006, 10:09 AM

and when you overbore a cylinder, you actualy increase the displacement:
a 350 becomes a 355, 400 becomes 406 cu in displacement, and etc. this is something that has to be taken into account when trying to nail down your compression ratio. your 9.0:1CR can easily become 8.3:1 with a .030 overbore... not a good thing if you are trying to make big power. just something else to keep in mind.

hell, for that matter, the thickness of your head gasket can affect your CR.

02-12-2006, 10:09 AM	#61
jims69camaro Avatar Abuser Join Date: Aug 2004 Location: 08721-1716 Posts: 5,056 iTrader: (0)	and when you overbore a cylinder, you actualy increase the displacement: a 350 becomes a 355, 400 becomes 406 cu in displacement, and etc. this is something that has to be taken into account when trying to nail down your compression ratio. your 9.0:1CR can easily become 8.3:1 with a .030 overbore... not a good thing if you are trying to make big power. just something else to keep in mind. hell, for that matter, the thickness of your head gasket can affect your CR. __________________ JSFBOA Save a life. N = R* fp ne fl fi fc L