These big block pistons are compatible with forced induction, nitrous and angle milled heads. 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. Bore: 4.310 Stroke: 4.250 Rod: 6.385 Deck: 9.780

Includes:
Pin #990-2930-18-51S (174g)
Double spiro locks (#990-042-CS)
Oil Rail Support is Included
Price per piston.