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JE 257947 Forged Inverted Dome Pistons 4.500 Bore

SKU: JE-257947_1


Availability: Out of stock

Quick Description

Big Block Chevy 509, Bore 4.500, Stroke 4.000, Rod Length 6.385, Inverted Dome -28cc, 591 Grams, Set of 8

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), and double spiro locks #990-042-CS are included.

Compression Ratio with 118cc Heads 7.6:1
Compression Ratio with 124cc Heads 7.4:1
Quick Information

Additional Information

SKU JE-257947_1
Manufacturer JE
Vehicle Make Chevy BB
Bore Size 4.500
Wrist Pin Size 0.990
Piston Material 2618 Forged
Compression Height 1.395
Piston Ring Size 1/16 1/16 3/16
Piston Type Dish/Inverted Dome
Rod Length 6.385
Crankshaft Stroke 4.000
List price No