MANLEY 4340 Forged Steel Crankshaft [Design LW | Reluctor Wheel 24 Tooth | Stroke 4.100 | Minimum Rod Length 6.125 | Main Journal Diameter 2.559 | Rod Journal Diameter 2.100 | Bobweight (grams) 1755 | Total Weight (lbs.) 50-52] (GM LS exc/ LS7) : COLORADOSPEED - LATE MODEL DOMESTIC (AMERICAN MUSCLE) | IMPORT (EUROPEAN | SPORT COMPACT) AUTOMOTIVE PERFORMANCE PARTS