Small Chevy 4340 Crank 3.750 Stroke 2 Piece Rear Seal, 6.000 Rod, INT Balance ESP 4340 steel cranks feature exceptional strenght & unsurpassed quality at a reasonable price. Eagle?s forged steel cranks features: multi-stage heat treating, x-rayed, magnafluxed, sonic tested, stress relieved, shot peened, .125 journal radius for increased strength, precision ground and micro-polished journals. Chamfered bearings are required to provide adequate clearance for the .125 journal radius.