Overview

Summit Racing™ Pro LS Crankshafts

Summit Racing™ Pro LS forged steel crankshafts deliver industry-leading fit, finish, and durability at an affordable price. Order the model recommended for your year/make and engine application. Check out the long list of premium features:

* 4340 forged steel

* Tested to over 1,200 hp in boosted applications

* Core hardened to optimum strength, then tempered to remove stresses

* Nitride hardened, which results in less distortion, excellent case depth, and more fatigue life

* Profiled counterweights reduce windage

* Precision stroke and indexing

* Lightening holes are drilled in the rod journals for quicker engine acceleration

* Gun-drilled Main Journals for quicker engine acceleration

* Each crank is magnetic particle tested to ensure it’s free of flaws

* Large radius fillets for increased strength, narrowed rod bearings for reduced friction

* Straight shot oiling for maximum lubrication just prior to maximum load angle

* Maximum journal tolerances of +/- .0001 in. ensure consistent bearing clearance

* Micro-polished journals with chamfered oil holes for maximum durability and bearing life

* Optimized counterweight placement for reduced twisting at high RPM and ease of balancing

* High-quality reluctor rings are installed with precision fixturing

* Extra 3/16 in. front keyway for blower cars

Warranty