Big Block Inverted Dome Forged Piston J257942 Product:Big Block Chevy 540, 4.500" bore, 6.385" rod length, -20.0cc dome vol Wider angle (10°) locks better

Wider angle (10°) locks better distribute increasing valve spring loads over the retainer than typical 7° locks reducing the chance of "pull-through" failure

LK-COS64L60CM

Must be installed by experienced mechanic

059" VULCAN CUT-RING" SCE - CR199959L

Polished BLOWER 8-71 BILLET POLISHED Features:

Big Block Inverted Dome Forged Piston J257942 Product:Big Block Chevy 540, 4.500" bore, 6.385" rod length, -20.0cc dome vol Wider angle (10°) locks betterBig Block Inverted Dome Forged Piston 257942 J257942 Big Block Chevy 540, 4. 500" bore, 6. 385" rod length, 20. 0cc dome volume BBC 4. 500" PISTONS 20cc DISH These big block pistons are compatible with forced induction, nitrous and angle milled heads. The inverted dome shape has been designed for maximum efficiency and horsepower. Valve reliefs will accommodate oversized valves and long duration, tight lobe separation cams. Precision CNC machined ring