Piston Set of 8Fits Gm Olds 5.7L 350 Dish TopSize = .030 OversizedBore Diameter (STD)AlloyTop Ring2nd RingOil RingPin DiameterCompression Height103.05mm (4.057in)Standard5/64in5/64in3/16in0.98061.595Need Rings? Please check our store for available inventory by clicking here