Callies Compstar 4340 Forged Steel Crankshaft, Chevrolet LS1 Main, 58T Reluctor Wheel Designed by Callies engineers, rough machined to their specification on 4340 material forgings, then finished in Callies own facility. Properly placed counterweights that not only improve balance but reduce bearing loads. Hardened with a deep nitride, ideal for abusive dirt track environments. All rod journals are drilled and counterweights are profiled for piston clearance. Requires narrowed bearings.
Part Type: Crankshaft Application: Chevrolet LS Crankshaft Material: 4340 Forged Steel Nitrided: Yes Rear Main Seal Style: 1 piece Engine Main Bearing Type: LS1 Main Stroke: 4.125" Rod Length: Rod Journal Diameter: 2.100" (LJ) Crankshaft Snout Size: Standard Engine Balance: Internal Lightening Holes In Rod Throws: No Rod Bearings Included: No Requires Narrow Bearings: Yes Main Bearings Included: No Manufacturer: Callies Manufacturer's Part Number: APU317-CS Weight: Warranty: Sold without warranty, expressed or implied Quantity: Sold as Each |