JE Pistons big block inverted dome top pistons are compatible with forced induction, nitrous and angle milled heads. The inverted dome shape has been designed for maximum efficiency and horsepower, and the valve reliefs will accommodate oversized valves and long duration, tight lobe separation cams. Compression height is figured using 9.780 block height with zero deck clearance, and the precision CNC machined ring grooves accept 1/16, 1/16, 3/16 rings. These pistons will fit both open and closed chamber cylinder heads
Brand JE Pistons
Manufacturer's Part Number 257947
Part Type Pistons
Product Line JE Pistons Big Block Inverted Dome Top Pistons
Summit Racing Part Number JEP-257947
Bore (in) 4.500 in.
Bore (mm) 114.300mm
Piston Style Dish, with single valve relief
Piston Material Forged aluminum
Compression Distance (in) 1.395 in.
Piston Head Volume (cc) +28.00cc
Wrist Pin Style Press-fit or floating
Pin Diameter (in) 0.990 in.
Piston Ring Thickness 1/16 in. x 1/16 in. x 3/16 in.