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RPM427

06-15-2002 05:56 PM

Compression ratio

Anyone know what my compression ratio will be on with stock pistons and 61cc combustion chambers on a 91 GT. Gasket thickness is also stock.

PKRWUD

06-15-2002 06:06 PM

9.1:1 (including a .047" thick head gasket, and the 4 valve notches in the piston).

Take care,
-Chris

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