LUNATI Signature Series Crankshaft, 58X [Stroke 4.125" | 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)

As the premium line of cranks offered by Lunati, Signature Series Crankshafts are the strongest you will find for your engine. The specialized non-twist 4340 forged steel construction comes completely profiled and detailed to our racing specs. Many design features such as gun-drilled mains, lightened rod journals, micropolished journals and a windage reducing contoured wing counterweight profile make the Signature Series the best choice for serious racers.

• All rod journals have drilled lightening holes to reduce the inertia weight of the crankshaft
• All journal radiuses are ground to .125"; roundness of each journal is .0001" or less
• Pulsed plasma nitride heat treated for increased strength and durability
• Micropolished journals
  

NOTE: All Lunati crankshafts MUST use narrow or chamfered main and rod bearings.

Short Snout