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Scat Engine Rotating Assemblies

Scat engine rotating assemblies are available with either a high-quality Scat forged 4340 crankshaft or Scat's Series 9000 cast crankshaft, plus I-beam or H-beam connecting rods with 7/16 in. or 3/8 in. cap screw bolts. For maximum power and reliability, Scat adds rod and main bearings from King, Federal Mogul, or Clevite 77, depending upon the application—and pistons and piston rings made by such well-known manufacturers as SRP/JE, Ross, KB, Mahle, Diamond, and Probe. Kits with cast and standard forged pistons have standard rings; kits with premium forged pistons have file-fit rings. Nearly 800 Scat kits are available; order the package tailored for fitment with your engine application.

4.26 out of 5 stars ( 136 )

$1,364.99

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$2,808.99

Scat Timing Chain and Gear Sets

Crankshaft. Camshaft. Timing Belt. Three essential components linked together, keeping your engine firing properly! Those parts don't last forever, of course, so replacement timing chain and gear sets are available from SCAT Enterprises to restore accurate, reliable timing and performance. Most of these billet steel sets include a Torrinton bearing and a keyway at the crank, allowing you to move the cam timing forward or back to the desired setting.

4.0 out of 5 stars ( 1 )

$284.99

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.

4.21 out of 5 stars ( 63 )

$293.99

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$726.99

Scat Harmonic Balancer Crankshaft Spacers

Properly seat your damper with Scat harmonic balancer crankshaft spacers. These engine-specific damper spacers are precision-machined to tolerances tighter than OEM for a correct fit to the crankshaft to achieve proper belt alignment.

Not Yet Reviewed

$75.99

Scat Forged Counterweight Crankshafts

Scat forged counterweighted crankshafts are made from high-tensile 4340 chromoly steel, with fully machined exterior profiles. All four counterweights are machined to exact symmetrical position and mass. The cranks are electronically balanced to within 2 grams, ground to exacting tolerances, and micro-polished for maximum bearing life. These replacement crankshafts are designed for 1908-27 Ford Model T applications.

5.0 out of 5 stars ( 2 )

$1,188.99

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$2,349.99

Scat Excalibur Crankshafts

Scat Excalibur crankshafts are precision-ground, heat-treated, and nitride-hardened for superior wear resistance. They are crafted from lightweight 4340 non-twist forgings. Features include: * Lightweight, weighing 48 to 50 lbs. depending on crank selected * Rough-balanced to 1,800 grams +/- 2 percent * Have bull nose counterweights for improved windage * Scoop main oil holes * Straight shot and chamfered oil holes * Lightening holes in all rod journals * Large radius on all journals * Available in a choice of rear main seal styles, stroke, and rod length

Not Yet Reviewed

$974.99

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$989.99

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

$2,317.99

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$2,837.99

Scat Forged Superlight Crankshafts

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

5.0 out of 5 stars ( 1 )

$1,212.99

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$3,199.99

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

$1,399.50

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$2,414.99

Scat Forged Standard Weight Crankshafts

Scat forged standard weight crankshafts are designed for street or race engines with substantially increased horsepower. 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. Scat forged standard weight crankshafts are available in dozens of sizes and configurations for fitment on vehicles spanning seven decades.

4.41 out of 5 stars ( 27 )

$1,002.99

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$1,079.99

ATK Marine Rebuilt Long Block Engines

ATK Marine Engines offers premium-quality rebuilt long block engines specifically for boating applications. These engines are designed to deliver maximum performance and long-term durability for your boat. Order the model recommended for your marine application. ATK Marine rebuilt engines include: * Special marine pistons and rings * Special marine camshaft * Marine gaskets * New intake and exhaust valves * New main, rod, and cam bearings * New valve lifters, rocker nuts, and swivels * Heavy-duty double roller timing chains * Cam sprocket * Crank gear * Freeze plugs

4.28 out of 5 stars ( 43 )

$2,839.00

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$5,209.00

ATK High Performance Chevy LM7 383 Short Blocks

ATK Chevy LM7 383 short blocks support your build with a solid foundation. Produced for the 1999-2007 trucks, LM7 engines are very popular engines to swap into musclecars and other LS swap vehicles. ATK High Performance Chevy LM7 383 short blocks are built for naturally aspirated engines up to 700 hp. Your ATK LM7 engine may include these components for optimal performance: * Block: GM LM7 5.3L * Bore/stroke: 3.903 x 4.000 * Displacement: 383 cu. in. * Crankshaft: K1 4340 forged steel, internally balanced 24-tooth * Connecting rods: Scat Premium Pro 4340 forged I-beam with ARP 8740 bolts * Pistons: Wiseco 2618 forged aluminum with coated skirts * Piston rings: Wiseco GFX (alloy steel top ring) * Camshaft bearings: Installed and clocked to OEM position * Freeze plugs: Brass installed and sealed * Oil galley plugs: installed and sealed * Weight: 285 lbs.

Not Yet Reviewed

$4,212.99

ATK High Performance Chevy 377 Stroker Short Blocks

Looking to upgrade your old engine using your existing heads? ATK high performance Chevy 377 Stroker short blocks use a 100 percent new American-made cast iron block outfitted with a Scat crank kit. All the hard work is done, you just need to finish it off. These crate engines are available with forged H-beam or I-beam connecting rods; dish top or flat top pistons; forged 4340 steel or nodular iron crankshaft; and other options. Note: Performance short blocks are based on dyno-proven combinations built with name brand parts. Stroker engine built over size of stock stroke. Short block strapped and shipped on wooden pallet crate.

3.0 out of 5 stars ( 1 )

$3,392.99

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$4,699.99

ATK High Performance GM 383 Stroker 525 HP Stage 3 Long Block Crate Engines

ATK High Performance GM 383 Stroker 525 hp Stage 3 long block crate engines are power transplants for your high performance projects. ATK Stage 3 or complete engines are designed for those that want to drop the engines into their projects and fire them up. ATK tries to outfit the engines as completely as possible to save you time and headaches. GM complete dress engines typically consist of the Stage 2 build plus carburetion, spark plug wires, and spark plugs. Engine specifications: * Horsepower: 525 * Torque: 515 * Block: OE roller block 4-bolt main one-piece seal 1996-2000 * Bore/stroke: 4.040 x 3.750 in. * Displacement: 383 * Crankshaft: Scat 4340 forged external balance rear of crank/internal balance front of the crank * Rods: Scat 4340 forged H-beam with ARP 8740 bolts * Pistons: Forged 10.2:1 compression * Rings: Moly * Camshaft: Hydraulic roller * Cam specs: 246/250 at 50 .603intake/.609exhaust 110LSA * Timing chain: Double roller * Cylinder heads: ATK American-made aluminum 70cc/210cc 2.02/1.60 * Rocker arms: Billet aluminum 1.6 roller rockers * Oil pan: Moroso 7qt. with windage tray * Oil pump: Melling * Flexplate/flywheel: Pioneer external balance 168 tooth (with Scat kit) * Balancer: PowerBond SFI internal balance 8 in. * Intake manifold: Holley strip dominator single plane * Distributor: Pro billet (iron gear) * Water pump: Weiand action plus long pump * Carburetor: Quick Fuel 750 cfm mechanical secondary no choke * Fuel pump: Holley mechanical 110 gph * Spark plugs: Autolite * Spark plug wires: 8mm

Not Yet Reviewed

$8,959.00

Edelbrock Musi Carbureted 555 C.I.D. 676 HP Long Block Crate Engines

Edelbrock and Pat Musi are a powerful combination, and Edelbrock Musi carbureted 555 c.i.d. 676 hp long block crate engines are no less impressive. The big feature is the E-CNC cylinder heads that are strategically ported to achieve optimal airflow, gaining you maximum horsepower and torque in high performance street applications. Plus, their key advantage is the stock location of the exhaust port, allowing you to use readily available, off-the-shelf headers. Edelbrock Musi carbureted 555 C.I.D. 676 hp long block crate engines come ready to perform; just bolt on and fine tune to pack big block power in your ride. Additional features include: * Dart Big-M block * Scat forged steel crank * Forged H-beam rods * Forged pistons * Hydraulic roller camshaft * Roller rockers * Victor Jr. manifold * Thunder Series AVS 800 cfm carburetor

Not Yet Reviewed

$20,775.95

ATK High Performance GM 383 Vortec 390 HP Stage 3 Long Block Crate Engines

Pack Vortec power and stroker torque in your ride with ATK High Performance GM 383 Vortec 390 hp Stage 3 long block crate engines. These engines are hand-built and balanced to ensure a strong-running, reliable engine for your daily driver or hot rod. The 460 ft.-lbs. of twist make these extremely versatile mills that are at home in a towing rig, muscle car, or street rod. Get back out on the road with the ground-pounding power that only a stroker can give you. Engine specifications: * HP: 390 * TQ: 460 * Block: OE roller block 4-bolt main 1-pc seal 1996-2000 * Bore/Stroke: 4.040 in. x 3.750 in. * Displacement: 383CI * Crankshaft: Scat nodular iron external balance rear of crank/internal balance front of the crank * Rods: Scat I Beam 5.7 in. rods with ARP 8740 bolts * Pistons: Hypereutectic 9.5:1 compression * Rings: Moly * Camshaft: Hyd. Roller * Cam Specs: 220/224 @50 .495in/.502ex 110LSA * Timing Chain: Double roller * Cylinder Heads: Dart vortec cast iron 67cc/165cc 2.02/1.60 * Rocker Arms: Stamped steel 1.5 ratio * Oil Pan: Rear sump 5qt (not for Chevelles with steering behind crossmember, some Corvettes and 62-67 Chevy II's) * Oil Pump: Melling STD volume * Balancer: Internally balanced – PowerBond #PB1046-N * Flexplate: Externally balanced – Pioneer #FRA-159 (with scat kit) * Intake Manifold: ATK HP dual plane * Distributor: HEI (Iron Gear) * Water Pump: OE long pump * Carburetor: Quick Fuel 680CFM vacuum secondary's electric choke #HR-680 * Fuel Pump: Holley mechanical 110GPH #12-327-11 * Spark Plugs: Autolite #605 * Spark Plug Wires: 8mm Engine info: * Oil: Conventional/Non-Synthetic 10W30 * Oil Filter: Wix or K&N * Timing: 34-36 Degrees * Spark Plug Gap: .035 in. * Firing Order: 18436572 * Octane: 91+ * Stall Converter: Stock * Exhaust: 1 5/8 Headers

Not Yet Reviewed

$6,179.00

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