This listing is for a set of (8) +.030 over Hypereutectic Pistons Flat Top 2 valve relief pistons with coated skirts and matching Moly rings set compatible upgrade replacements for 1972-97 Ford 460 engines. Piston Style: Flat top, with two valve reliefs, Compression Height (in): 1.752 in., Wrist Pin Style: Press-fit (Pins Included), Pin Diameter (in): 1.040 in., Piston wt. 768gr Piston wt. w/pin 997gr.. Stock 3.850" stroke. NOTE: These are Not OE duplicate piston. Use as a performance upgrade.