LUNATI Signature Series Crankshaft, 58X [Stroke 4.000 | Main Journal O.D. 2.559 | Rod Journal O.D. 2.100 | Minimum Rod Length 6.125 | Connecting Rod LS | Rod Journal Width 1.900] (GM LT1 GEN V) : COLORADOSPEED - LATE MODEL DOMESTIC (AMERICAN MUSCLE) | IMPORT (EUROPEAN | SPORT COMPACT) AUTOMOTIVE PERFORMANCE PARTS