This item is for a set of eight (8) +.030 over bore Power Forged flat top with 2-valve relief pistons & Matching Moly rings compatible with for Ford 351C Cleveland V-8. Piston Top Style: Flat top with 2-valve reliefs Piston Material: Forged aluminum Compression Height: 1.647 in. Dome Volume: 1.50cc Wrist Pin Diameter: .912 in.; pins included Wrist Pin Style: Press-fit, Ring Land Size: 5/64-5/64-3/16 oil ring. Bore: 4.030 in. at .030 over bore, Stroke: 3.500 in. , Stock Connecting Rod Length: 5.780 in.