Description:This is a new 4340 forged nitrided Standard weight Chevy BBC 454 crankshaft with 1 piece rear seal. This crank are CNC machined, X-rayed, magnafluxed, and sonic tested to insure quality and conformity. They are the perfect choice for applications up to 1500HP.Material Forged 4340 Steel Stroke (in) 4.250" Rod Journal Diameter (in) 2.200 Min Rod Length (in) 6.385Main Journal Diameter (in) 2.749Rear Main Seal Style 1-piece Engine Balance Internal
