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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.
Premium Construction for High Strength - Constructed from 4340 non-twist steel forgings for durability and strength in high performance and racing applications.
Reach Your Power Band Faster - Lightening holes in rod journals reduce crankshaft inertia which enables increased acceleration.
The Only Choice for Serious Racers - Contoured wing counterweight ensures reduced windage, while gun-drilled mains and lightened rod journals lighten rotating mass.
Finish Strong - Lunati Signature Series Crankshafts are pulsed plasma nitride heat treated for increased strength and durability. Both main and rod journals are micropolished.
Strict Tolerances for High End Performance - Signature Series Crankshafts feature radiuses that are ground to 0.125", while the roundness of each journal is held to 0.0001" or less. These tight tolerances contribute to Signature Cranks ability to withstand up to 1,500 Horsepower.
Fit Chevrolet Big Blocks w/ 2 Pc Rear Main Seals
Made in USA
