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 Lunati crankshafts MUST use narrow or chamfered main and rod bearings. Proven to withstand over 1500 horsepower applications.
Features:
All rod journals are drilled with either 7/8" or 3/4" 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
Specifications:
Stroke: 3.750 in Main Journal O.D.: 2.448 in Rod Journal O.D.: 2.100 in Minimum Rod Length: 6.000 in Notes: 350 Main / 2PC Rear Seal Connecting Rod: Small Block Chevy Rod Journal Width: 1.900 in