Big Block Flat Top - Standard Deck Block Forged Piston J257965 Product:Big Block Chevy 540, 4.500" bore, 6.385" rod length, -3.0cc dome volu Replacement Cast Iron Water PumpSuit

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Big Block Flat Top - Standard Deck Block Forged Piston J257965 Product:Big Block Chevy 540, 4.500" bore, 6.385" rod length, -3.0cc dome volu Replacement Cast Iron Water PumpSuitBig Block Flat Top Standard Deck Block Forged PistonBig Block Chevy 540, 4. 500" bore, 6. 385" rod length, 3. 0cc dome volume J257965 57965 These big block pistons are compatible with forced induction, nitrous (Except 1. 120 compression height) and angle milled heads. Valve reliefs will accommodate oversized valves and long duration, tight lobe separation cams. Precision CNC machined ring grooves accept 1 16, 1 16, 3 16 rings. Will fit both open and