Engine Crankshafts | Summit Racing

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

4.58 out of 5 stars ( 12 )

$899.99

Scat Series 9000 Cast Pro Comp Stroker Lightweight Crankshafts

Do you want to increase cubic inches? Scat Series 9000 cast Pro Comp stroker lightweight crankshafts are the perfect solution for your mild or moderate street or race engine. These lightweight crankshafts are patterned after Scat's custom billets and are built from their exclusive space-age 9000 material. Features like Aero-wing counterweights, straight shot oil holes, and lightening holes in all rod throws (except for the 3.480 stroke) offer reduced windage and the ability to increase your horsepower. Scat cranks are precision-ground and micro-polished for a beautiful finish and a perfect fit. Stroke your engine with lightweight, state-of-the-art components from skilled craftsmen--Scat series 9000 cast Pro Comp crankshafts.

4.18 out of 5 stars ( 61 )

$298.99

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$716.99

Manley Pro Series Crankshafts

Manley Pro Series crankshafts can make your short block bulletproof. They feature forged 4340 construction and undergo a multi-step heat-treatment process and are then nitrided for added strength. The crankshafts are stress-relieved, shot-peened, and magnafluxed. Manley Pro Series crankshafts have micro-polished large .125 in. radius journals, gun-drilled mains, and lightened rod journals for weight reduction. The counterweights are fully profiled and they are designed for internal balancing.

4.91 out of 5 stars ( 11 )

$909.69

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$1,832.93

Scat Forged Pro Series Big Block Post Crankshafts

Using only state-of-the-art equipment and advanced techniques, Scat is able to offer the automotive aftermarket World Class, race proven forged and billet crankshafts including the Pro Series big block post crankshafts. These Scat crankshafts are machined in-house using premium non-twist single plane 4340 forgings. Each Pro Series big block post crankshaft is skillfully machined, precision finished, ion-nitrided and also heat-treated for superior quality, extreme strength, and durability, and fully customized to your needs. Order the crankshaft designed for your application needs. Product features and details: * Manufactured from non-twist single plane 4340 forgings * Precision ground, heat-treated and Nitrided for superior wear-resistance * Straight shot and chamfered oil holes * Large radius on all journals * Lightening holes in all rod journals * Aero Wing counterweights * All popular engines, strokes, and rod sizes

Not Yet Reviewed

$1,034.99

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$3,071.99

Scat Forged Pro Series Lightweight Crankshafts

Scat's Pro Series lightweight crankshafts are forged 4340 steel yet have profiled counterweights to reduce weight for increased power—and that makes them great for achieving faster rpm curve! Scat recognized that a lighter crank that maintains its strength will let the engine rev quicker and make more horsepower and torque. The less weight you're trying to turn the better—and the less weight in the car, the better. These crankshafts are precision-ground, heat-treated, shot-peened, inspected, and micro-polished for superior tolerance control. Scat crankshafts are also nitride-hardened for superior wear resistance, have straight-shot and chamfered oil holes, and feature lightening holes in all rod throws. They also have a large radius on all journals for improved strength and wear resistance.

Not Yet Reviewed

$2,286.99

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$2,837.99

Manley Pro Series Turbo Tuff Crankshafts

Manley Pro Series Turbo Tuff crankshafts are fully machined billet components for high-horsepower and high-boosted sport compact applications. Crafted from 4340 billet steel, Turbo Tuff crankshafts go through a multi-step heat treatment process and are nitrided for added strength. They are stress-relived, shot-peened, and 100 percent magnafluxed, and they feature fully profiled counterweights.

Not Yet Reviewed

$900.75

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$1,954.24

Scat Forged Pro Series Standard Weight Crankshafts

Scat's forged Pro Series standard weight crankshafts will give you strength and reliability to dominate the competition. Proud to be a pioneer in the grass roots of racing heritage, Scat has designed and engineered their forged Pro Series standard weight crankshafts for the budget-minded engine builder and racer alike. Each Scat crankshaft is skillfully machined, precision finished, ion-nitrided and heat-treated for superior quality, extreme strength, and durability, and have straight shot and chamfered oil holes, large radii on all journals, lightening holes in all rod journals and aero wing counterweights. Scat proudly produces some of the finest crankshafts in the world—and with race proven wins! Select the Scat Pro Series standard weight crankshaft for your application needs.

Not Yet Reviewed

$2,368.99

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$2,370.99

Summit Racing™ Woodruff Keys

Summit Racing™ woodruff keys are designed to locate the crank sprocket on the nose of the crankshaft. They're made of steel and available with zero degree offset for forward or rearward position.

4.89 out of 5 stars ( 9 )

$3.99

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$5.99

Scat Forged Lightweight Crankshafts

Lightweight Scat crankshafts equal quicker rpm! They are made from the same strong aircraft-quality forging as standard-weight cranks, but have profiled counterweights for less weight. Scat lightweight crankshafts are perfect for engines wanting quicker rpm. These crankshafts feature profiled aero-wing counterweights and have straight shot and chamfered oil holes. They are nitride-hardened, with large radii on all journals for superior wear resistance, and use lightening holes in all rod throws. Scat forged lightweight cranks are CNC-machined for absolute tolerances and symmetry, offering ease of balance and a reduced rotating weight.

Not Yet Reviewed

$2,584.99

Hot Rods Crankshafts

Are you looking to replace a broken or worn-out crankshaft? Hot Rods crankshafts are sold with or without Hot Rods connecting rods and wrist pin bearings. These crankshafts are factory assembled and trued to OEM specifications. They avoid the additional machine work and extra parts typically required for long-stroke engines. Stroker crankshafts use stock pistons. Heavy-duty crankshafts utilize their heavy-duty connecting rods. Bolt in and go with these Hot Rods crankshafts!

Not Yet Reviewed

$797.99

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$1,049.99

Eagle Cast Steel Crankshafts

Eagle cast steel crankshafts are the most dependable option when you don't want to break the bank. Each crank is inspected for dimension, size, and stroke accuracy. For improved efficiency and reliability, they have a journal finish of 6 R.A. or less and a target bob weight of +/- 2 percent for easy balancing. The crankshaft is the heart of your engine, so demand the best—order the Eagle Specialty model and performance options recommended for your vehicle year, make, and engine application.

4.44 out of 5 stars ( 192 )

$311.99