This listing is for a set of (8) Hyper-eutectic Flat Top 2 Valve relief performance Pistons and matching moly rings compatible with Chrysler Dodge 360 engines. Not Factory OE duplicate pistons. Use as a performance upgrade only. Pistons feature Flat top 2 valve reliefs. Compression distance: 1.660. Uses Rod length: 6.123". Includes lock for Press or floating pins diameter .984". Good for street/strip or light race. 5/64" 5/64" 3/16" ring grooves. .027" deck clearance. Stock 3.578" stroke.