JE Piston Set, Domed, Forged, 4.135" Bore, 1/16" x 1/16" x 3/16" Ring Grooves, Plus 2.5cc, Small Block Chevy, Set of 8

JE Pistons 400 small block 18 degree dome pistons feature a new dome profile to match a wider variety of 18 degree heads. They're designed to fit your high-compression, high-horsepower, 17/18 degree dirt late model engine. They have smooth flowing domes for optimum flame travel and angle milled head compatibility. New valve reliefs will accommodate larger valves and long-duration, tight lobe separation cams. These pistons utilize dedicated left and right hand forgings and accept 1/16, 1/16, 3/16 rings.