3.900" Stroke

K1 Technologies

K1 Technologies Crankshaft, Chevy LS1 3.900" Crankshaft, 24t Ring, Part #012FAE39024

K1 Technologies

K1 Technologies Crankshaft, LS1 3.900" Crankshaft, 58t Ring, Part #012FAE39058

Callies

Callies Magnum 3.900" Stroke Crankshaft Standard Post for LSX Engines Part #APC-31T-MG