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  1. dacuda360

    340 pistons in a 360?

    I've done several of these conversions but... You have to use 8.5 72' and later 340 piston. In stock form the piston exceeds the deck height by .020-.030 thousands. It all depends on block and how squared it is or isn't. I tapered the piston edges and had to cut deeper valve reliefs to put in a...
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