MANLEY 4340 Forged Steel Crankshaft [Design SLW | Reluctor Wheel 24 | Stroke 4.000 | Minimum Rod Length 6.125 | Main Journal Diameter 2.559 | Rod Journal Diameter 2.100 | Bobweight (grams) 1686 | Total Weight (lbs.) 46-58] (GM LS exc/ LS7) : COLORADOSPEED - LATE MODEL DOMESTIC (AMERICAN MUSCLE) | IMPORT (EUROPEAN | SPORT COMPACT) AUTOMOTIVE PERFORMANCE PARTS