Callies Apex 4340 Forged Crank 4.000" Stroke GM LS

Callies LS Apex 4340 Forged Steel Crank 3.625 Stroke

Crankshafts are manufactured from 4340 forged steel and utilize the same forgings as the Magnum series, yet are machined by the same supplier that produces the Compstar line for improved affordability. Each crankshaft is nitrided for optimal hardness and wear resistance prior to being finished and inspected in-house at Callies.

• GM LS
• Stroke: 4.000"
• Main Journal: 2.559"
• Rod Journal: 2.100"
• Rod Length: 6.125"
• Part Number: APO-31V-AS

Note: 2.100 Rod Pin, 58-tooth reluctor wheel