Join Date: Jan 2009
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Lowering compression will allow you to run higher peak cylinder pressures, thats about it. Running a 12v marine gasket will lower compression, but only slightly, In that situation, you are really only doing it for a little extra security so you don't pop a head gasket, But it doesn't give you that much extra room.
If you're really serious about lowering compression I would suggest pistons. But I don't really think you have to worry about getting your cylinder pressures that high in a VP44 equipped truck. Just studs and o-rings and a marine head gasket should keep you plenty safe to get near the max potential of that pump.
2000 2500 reg. cab 4x4 auto 577hp
09 6.7L QC LB stick, 4x4.
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