Seller notes

SPEED PRO PISTONSThis item is for eight (8) .030 over bore Speed Pro (Sealed Power) hypereutectic flat top pistons with 2-valve reliefs and a cast piston ring set (Hastings/MAHLE) for Chevrolet 350ci (5.7L) small block V-8 engines. P/N (8) H631CP-030 + 139-030.If you're looking for pistons with an unbeatable combination of performance and value, then Speed-Pro hypereutectic pistons are for you. These pistons are manufactured from aluminum alloy that contains 16 percent silicon for greater streng...

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