CamaroZ28.Com Message Board - Compression ratio

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DavidsZ

Jan 4, 2005 09:51 AM

Compression ratio

HEy whats up guys, i was wondering if anyone could tell me what the stock compression ratio of a 1994 Z28 would have been, and also what the lift and duration of the stock cam was. Also does anyone know the compression ratio of a C5 corvette. Thanks

sssalah

Jan 4, 2005 10:52 AM

Re: Compression ratio

Compression for Al headed LT1's is 10.5 and cam is 203/207 @ 0.05", lift is around 0.450-0.470". LS1 has slightly less compression, probably due to the reverting back to regular cooling pattern.

Injuneer

Jan 4, 2005 11:34 AM

Re: Compression ratio

202/207 116LSA, 0.450I/0.460E according to the table in this article:

http://www.automotiverebuilder.com/ar/ar99928.htm

There seems to be a variety of different specs quoted in different sources.

The LS1 used in the C5's had a 10.1:1 CR.

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