Compression ratio

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Jan 4, 2005 | 09:51 AM

DavidsZ

Thread Starter

Registered User

Joined: Jul 2000

Posts: 13

From: Greer, SC

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

Jan 4, 2005 | 10:52 AM

sssalah

Registered User

Joined: Nov 2001

Posts: 1,152

From: Bahrain

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.

Jan 4, 2005 | 11:34 AM

Injuneer

Administrator

Joined: Nov 1998

Posts: 71,086

From: Hell was full so they sent me to NJ

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.