GM Performance Crankshaft, 1-Piece Seal, 4340 Forged Steel, 3.800 Stroke, Chevy, 5.7L, Each (PART #GMP-12489436)

Whether you are building a street or race engine, your choice of crankshaft, the central component of your engine, is crucial to the peak performance of your engine. Strength and durability are important traits of a great crank, and GM Performance crankshafts are precision-engineered to be both. Chevrolet understands that crankshaft failure can be catastrophic, so their crankshafts are made to exacting specifications and tested against the forces of high performance engines. GM Performance forged steel crankshafts are forged from exceptionally strong 1053 and 4340 steel to hold up under the most demanding situations. Choose wisely--choose GM Performance crankshafts.

SPECIFICATIONS

Brand GM Performance
Manufacturer's Part Number 12489436
Part Type Crankshafts
Product Line GM Performance Forged Steel Crankshafts
Engine Stroke (in.) 3.800 in.
Crankshaft Material Forged 4340 steel
Engine Balance Internal/External
Rear Main Seal Style 1-piece
Lightened No
Requires Narrow Bearings Yes
Rod Bearings Included No
Main Bearings Included No
Rod Journal Diameter (in.) 2.100
Main Journal Diameter (in.) 2.448 in.
Balancer Bolt Thread Size 7/16 in.-20
Crankshaft Snout Style Standard
Quantity Sold individually.