JE Pistons Standard 23 Degree Domed Forged Piston Set - SB Chevy - 428 C.I. - 4.125" Bore Size - 4.000" Stroke - 6.000" Rod Length Helmet Skirts 75mm is intended for more

75mm is intended for more radical engine combinations and requires port matching to fit most manifolds

1964-1987 GM A-Body and G-Body vehicles (Buick Regal

4 to 12" Cut to Fit Long Probe

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JE Pistons Standard 23 Degree Domed Forged Piston Set - SB Chevy - 428 C.I. - 4.125" Bore Size - 4.000" Stroke - 6.000" Rod Length Helmet Skirts 75mm is intended for moreThese high compression pistons are compatible with most aftermarket 23 heads and are ideal for drag racing and circle track applications. Valve reliefs will accommodate oversized valves and long duration, tight lobe separation cams. Precision CNC ring grooves are designed for 1 16, 1 16, 3 16 rings. Will not fit Pro Topline or Brodix 11X cylinder heads. Includes: Pin #927 2750 15 51S (130g) Double Spiro locks #927 042 CS Contact reduction grooves