Not Ranked
I sure hope Rousch steps-to-the-plate better than G.M. performance did on my son's heads on a ZZ383 he has. There was a casting flaw in the aluminum that caused a depression outside the number seven combustion chamber. The depression allowed a blown head gasket symtom. The engine was out of warranty and that was their response. In the end, we bought new heads and just wrote it off to experience.
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