LT-1 Compression
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Joined: Dec 2006
Posts: 60
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From: Finland , 1995 LT-4 P-1SC
LT-1 Compression
The stock LT1 heads have a 54 cc chamber and 10,4:1 compression. My new heads are the AFR 195 cc with 58 cc combustion chamber. What you think, is the compression too low with the stock pistons. Should i change a thinner copper gaskets or the dome pistons ? The cam is Comp 503 (224/230 @ .050). By the way, are the SBC gen-1 pistons same as LT-1 ? Summit have a lot of Gen-1 pistons, but very few for LT-1.
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Joined: Jan 2002
Posts: 12,263
Likes: 86
From: O'Fallon Missouri
I'm pretty sure the LT1 has 58cc combustion chambers. But, whether they are 54 or 58, I would still use a thinner head gasket. The 95/96 Impala SS head gaskets will raise your compression ratio ~1/2 point.
GM part # 12553160
GM part # 12553160
