Callies BBP42B-MG 4.250 Big Block Chevy Magnum Crankshaft Forged 4340 Steel
Callies PerformanceRace smart with Magnum durable competition crankshafts from Callies. Manufactured from ultra-pure AISI 4340 steel, these cranks are subjected to multiple heat treatments, giving them unsurpassed wear and strength characteristics. With their gundrilled mains and fully profiled counterweights, you may choose from an available selection for a variety of engine types. You just can't beat the proven reliability and value of Callies Magnum crankshafts.
Rear Main Seal Style:2-piece
Engine Stroke (in):4.250 in.
Crankshaft Material:Forged 4340 steel
Engine Balance:Internal
Lightened:Yes
Requires Narrow Bearings:Yes
Rod Bearings Included:No
Main Bearings Included:No
Rod Journal Diameter (in):2.200 in.
Main Journal Diameter (in):2.750 in.
Balancer Bolt Thread Size:1/2-20 in.
Crankshaft Snout Style:Standard