There have been several discussions about thin copper head gaskets used to increase compression here. I'm building a 2.8 to 3.1 hybrid RWD iron heads, #981 3.1 crank and 3.1 pistons. Compression around 8.8. Would these copper gaskets give me a little more compression and what are the shortcomings and any extra machine work necessary? Also where do you get them and what's the part number?
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