Summit Racing™ Pro LS Crankshafts

4.58 out of 5 stars 12 Customer Reviews

Summit Racing™ Pro LS forged steel crankshafts deliver industry-leading fit, finish, and durability at an affordable price. Order the model recommended for your yea

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

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