Set of (8) flat top 2 valve relief pistons and matching moly rings compatible with 1962-69 327 Chevy. Pistons feature: flat tops with 2 valve reliefs, coated skirts. Stock 5.700" length rods, Stock 3.250" stroke. These are performance upgrades from stock. Not OE duplicate! Good for street/strip or light race. RPM range idle to 6000. Available in your choice of sizes, Please click size needed before adding to cart to get correct size.