Big Block Chevy Hypereutectic Pistons 1970-1983 Big Block Chevy 454 Bore: 4.250 in. (Standard) Rod: 6.135 in. Flat Top w/2 Valve Reliefs Ring Sizes: 5/64, 5/64, 3/16 in. 8.45 CR w/106.9cc Heads Set of 8
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![Sealed Power H661CP: Hypereutectic Pistons [Big Block Chevy 454]](/web/image/product.product/89631/image_1024/%5BSLP-H661CP%5D%20Sealed%20Power%20H661CP:%20Hypereutectic%20Pistons%20%5BBig%20Block%20Chevy%20454%5D?unique=dffbcda)
![Sealed Power H661CP: Hypereutectic Pistons [Big Block Chevy 454]](/web/image/product.product/89631/image_128/%5BSLP-H661CP%5D%20Sealed%20Power%20H661CP:%20Hypereutectic%20Pistons%20%5BBig%20Block%20Chevy%20454%5D?unique=dffbcda)
