Wider angle (10°) locks better distribute increasing valve spring loads over the retainer than typical 7° locks reducing the chance of "pull-through" failure
Must be installed by experienced mechanic
Polished BLOWER 8-71 BILLET POLISHED Features:
3L V8 DSL - All 2001 FORD F450 SUPER DUTY 7
Power Steering Pulley - Polished2-Groove Suit '75-Up Saginaw Pump With Press-On Pump Shaft
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