Chevy BBC 454 489 4.250" Stroke 4340 Forged Steel Crankshaft 2-Pc Seal
Description? CNC machined, X-rayed, magnafluxed, and sonic tested to insure quality and conformity. Large radius (0.125") on all journals, so chamfered bearings are required. They are the perfect choice for applications up to 1500HP. Make: Chevy Engine: BBC (454 Mains) Material: Forged 4340 Steel Stroke: 4.250" Stroke Balance: Internal Balance Rear Main Seal: 2-Piece Rear Main Seal Rod Journal Diameter: 2.200" Main Journal Diameter: 2.749" Min. Rod Length: 6.385"