JE 257947 Forged Inverted Dome Pistons 4.500 Bore
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.Compression Height figured using 9.780 block height with zero deck clearance. Precision CNC machined ring grooves accept 1/16, 1/16, 3/16 rings. Will fit both open and closed chamber cylinder heads.
Pin #990-2930-18-51S (174g)
Double spiro locks (#990-042-CS)
|Vehicle Make||Chevy BB|
|Wrist Pin Size||0.990|
|Piston Material||2618 Forged|
|Piston Ring Size||1/16 1/16 3/16|