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  1. Cams/Heads/Valvetrain
    Hey guys, I'm rebuilding my L67 because it was losing about 40% compression in a leak down test and was running really rough. I re-ringed the pistons but didn't re-bore because the cylinders looked good with no ridge at the top and the factory cross-hatch pattern was still visible (did a light...
    compression leak leak down rings valve leak
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