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CHEVROLET Chevy small block Gen III/IV (LS-based engines) Parts and Accessories

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Results 1 - 24 of 299

Summit Racing™ Chevy LS 5.3L 450HP Long Block Crate Engines

Looking for big LS engine power at an affordable price? Summit Racing™ remanufactured 5.3L LS long block crate engines are rated at 450 HP and 420 lbs.-ft. torque! This engine will give you the performance and drivability you have been searching for at a price you can afford. It can be a performance upgrade for 99-07 Chevy trucks, or an engine swap into your project vehicle. You will save time and money by leaving the machine-work and assembly to us. Just bolt on your accessories and drop it in. These engines are machined and assembled for us by the guys at ATK, and backed with a 2-year unlimited mile warranty for peace of mind. Technical specifications: * Horsepower: 450+ * Torque: 420+ * Block: Seasoned OE LM7/5.3L iron * Bore/stroke: 3.800-3.820 in. x 3.622 in. * Year range: 1999-2007 * Displacement: 323 C.I.D. * Crankshaft: OEM GM 3.622 in. stroke internally balanced 24-tooth reluctor wheel * Connecting Rods: OE GM forged powder metal 6.093 in. * Pistons: Hypereutectic flat top * Piston rings: Moly * Compression ratio: 10:1 compression * Camshaft: Summit Racing Pro LS Roller * Camshaft specifications: Lift- 550/550, Duration @.050- 222/232 * Camshaft bearings: Installed and clocked to OEM position * Cylinder heads: #799 or #243 OE aluminum 64cc 2.00 in./1.55 in. valves * Freeze plugs: Brass installed and sealed * Rocker arms: OE powdered metal 1.7 ratio * Oil Galley plugs: Installed and sealed

4.37 out of 5 stars ( 43 )

$3,849.99

On Sale

Holley Mid-Mount Complete Accessory Systems

Holley Mid-Mount complete accessory systems achieve what no other accessory bracket systems do--eliminate the brackets! This pulls in all the accessories tighter than other accessory drives by bolting directly to other components for a clean, integrated form. They offer superb engine visibility to show off your horsepower, not your accessories. Holley Mid-Mount complete accessory systems are available in several versions and finishes to match your application. Order the kit designed to fit your engine.

4.6 out of 5 stars ( 102 )

$2,149.95

$4,449.95

Chevrolet Performance Crate Engines

Looking for more power for your ride? Want to drop your quarter mile times substantially? Does OEM reliability and parts interchangeability interest you? Well my friend, you've come to the right place. Why bother rebuilding your existing engine with old, used, and worn-out parts when you can step up to brand-new with these affordable crate engines from Chevrolet Performance. You read it right, these engines feature all-new components built and manufactured by the pros at GM.

3.0 out of 5 stars ( 2 )

$7,285.07

BluePrint Engines Pro Series Chevy LS 376 C.I.D. 530 HP Long Block Crate Engines

BluePrint Engines provides a Dyno Promise with results and bragging rights. They make sure they hit their target horsepower and proper torque with every crate engine, utilizing an advanced computerized balancer to get rotating assemblies within 2 grams, ensuring silky smooth power over the entire rpm range. According to BluePrint, that's precisely why their engines sound and run better than the competitors. Accompanying your BluePrint Engines Pro Series Chevy LS 376 c.i.d. 530 hp long block crate engine will be a comprehensive, dyno-generated printout showing its critical specs. No more guessing what the real-world peak horsepower and torque ratings are. Any doubters in the crowd? Simply flash them your dyno results! BluePrint Engines Pro Series Chevy LS 376 c.i.d. crate engine: * Horsepower and torque: 530hp/495 lb.-ft. * Compression ratio: 10.7:1 * BluePrint Engines LS3 aluminum cylinder heads -- 69cc chamber -- 2.165 in. intake/1.590 in. exhaust valves -- 259cc intake/102cc exhaust runners * Hydraulic roller camshaft: -- .612 intake/.585 exhaust lift -- 225 intake/238 exhaust duration at .050 in. -- 113-degree lobe separation angle -- 3-bolt cam * Nodular iron crankshaft -- 3.622 in. stroke -- Forged 6.125 in. rods * Hypereutectic pistons * BluePrint Engines high-strength cast iron 6.2L block -- Increased deck thickness and strength webbing -- Extended cylinder skirt -- Priority main oiling -- 4.0662 in. bore -- 6-bolt main -- 1-piece rear main seal -- Improved water jacket design -- Utilizes OEM LS3 front and rear covers * LS valve cover * LS swap oil pan * Harmonic balancer Note: Controlled by customer provided ECU.

Not Yet Reviewed

$7,999.00

Summit Racing™ Automatic Transmissions

Summit Racing™ Automatic Transmissions combine quality and economy to offer replacement transmissions in many styles and options. These units are remanufactured with all-new clutches, thrust washers, seals, bushings, and high-energy bands, along with other "failure prone" hard parts depending on unit. Other features include a rebuilt front pump, a valve body with shift for street and performance and high-quality seals and gaskets. You get all these impressive upgrades, along with reliable performance and extreme value. All transmissions are Dyno tested before they're shipped. Order the model recommended for your vehicle.

3.47 out of 5 stars ( 57 )

$1,849.99

$1,899.99

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 )

$839.99

BluePrint Engines Pro Series Chevy LS 376 C.I.D. 530 HP EFI Base Dressed Long Block Crate Engines

BluePrint Engines provides a Dyno Promise with results and bragging rights. They make sure they hit their target horsepower and proper torque with every crate engine, utilizing an advanced computerized balancer to get rotating assemblies within 2 grams, ensuring silky smooth power over the entire rpm range. According to BluePrint, that's precisely why their engines sound and run better than the competitors. Accompanying your BluePrint Engines Pro Series Chevy LS 376 c.i.d. 530 hp EFI base dressed long block crate engine will be a comprehensive, dyno-generated printout showing its critical specs. No more guessing what the real-world peak horsepower and torque ratings are. Any doubters in the crowd? Simply flash them your dyno results! These long block engines are available with or without complete engine controller with ECU, harness, throttle pedal, and sensors. Select the one you want. BluePrint Engines Pro Series Chevy LS EFI base dressed engine: * Horsepower and torque: 530hp/495 lb.-ft. * Compression ratio: 10.7:1 * BluePrint Engines LS3 aluminum cylinder heads -- 69cc chamber -- 2.165 in. intake/1.590 in. exhaust valves -- 259cc intake/102cc exhaust runners * Hydraulic roller camshaft: -- .612 intake/.585 exhaust lift -- 225 intake/238 exhaust duration at .050 in. -- 113-degree lobe separation angle -- 3-bolt cam * Nodular iron crankshaft -- 3.622 in. stroke -- 6.125 in. connecting rods with 150,000 psi bolts * Hypereutectic pistons * BluePrint Engines high-strength cast iron 6.2L block -- Increased deck thickness and strength webbing -- Extended cylinder skirt -- Priority main oiling -- 4.0662 in. bore -- 6-bolt main -- 1-piece rear main seal -- Improved water jacket design -- Utilizes OEM LS3 front and rear covers * LS swap oil pan * Harmonic balancer * DBW throttle body * Available with a GM plastic or fabricated intake manifold * Fuel injectors and rail * Coil packs * Spark plugs and wires * Water pump

5.0 out of 5 stars ( 1 )

$9,849.00

$13,649.00

Magnuson Supercharger Kits

Magnuson supercharger kits make power you can live with! Magnuson's powertrain integration technology offers you the ability to have big horsepower and drivability in the same supercharger. This technology recalibrates the engine and transmission control programs to work with the altered induction path and boost pressure of the supercharger. And that produces a seamless and consistent delivery of power over the entire rpm range--not just the high end! For you, that means Magnuson superchargers will boost your power output, and yet run like their factory installed units. Whether you're driving a Corvette or a Cadillac, a Silverado or a Hummer, or a Camaro or a Mustang, Magnuson supercharger kits deliver maximum performance!

4.08 out of 5 stars ( 12 )

$7,395.00

$8,995.00

On Sale

Summit Racing™ Forged Crankshafts

Summit Racing™ forged crankshafts offer maximum strength and the best value for your dollar! Our crankshafts are non-twist forged from certified 4340 steel. They are put through several stages of heat-treatment, and then stress-relieved and shot-peened to provide the strength and reliability you demand for your high performance application. Each journal is micro-polished and a .125 in. radius is used for increased strength. Summit Racing™ forged crankshafts help you get the most in value and performance.

4.1 out of 5 stars ( 10 )

$1,019.99


$949.99

$1,099.99

BluePrint Engines Chevy LS 376 C.I.D. 530 HP EFI Retrofit Dressed Long Block Crate Engines

BluePrint Engines Chevy LS 376 c.i.d. 530 hp EFI Retrofit dressed long blocks are for those wanting maximum horsepower and durability. Every BluePrint engine is dyno-tested for proven results and is backed by their exclusive 30-month/50,000-mile warranty. Specs and components for the Chevy LS 376 crate engines include: * New GM 6.2L block * Nodular iron rotating assembly * Forged connecting rods * Hypereutectic pistons * Aluminum cylinder heads -- 68cc chamber -- 2.165 in. intake/1.600 in. exhaust valves * Roller camshaft -- .612 intake/.585 exhaust lift -- 225 intake/238 exhaust duration at .050 -- 113 degree lobe separation * Compression ratio 10.7:1 * LS3 intake manifold * Fuel injection included * Coil packs * Oil pan * Valve covers * Timing cover * Water pump * Harmonic balancer * Spark plugs and wires

4.83 out of 5 stars ( 6 )

$11,149.00

AFR 260cc LS3 Mongoose Cylinder Heads

AFR 260cc LS3 Mongoose cylinder heads are 100 percent 5-axis, CNC-ported, and feature titanium retainers, A356 aluminum castings, and Pac Racing springs. These CARB certified heads require 4.000 in. or larger bore applications on up through 454 cu. in. engines operating at or below 7,000 rpm—and flow over 380 cfm at 0.700 in. lift and are designed primarily for street and strip applications. Other structural features include Air Flow Research's trademark 3/4 in. thick head deck, reinforced rocker stud bosses, and thick wall runners provide unparalleled durability. Use of AFR stud girdles and full roller rocker arms are required. When it comes to building power, start with these AFR 260cc LS3 Mongoose cylinder heads.

5.0 out of 5 stars ( 5 )

$3,490.20

Summit Racing™ SPC Engine Blocks

Summit Racing™ SPC Engine Blocks are aftermarket V8 Engine Blocks made for "Street, Performance, or Competition." These new clean sheet designed aftermarket blocks are cast in a modern state-of-the-art German foundry on brand new molds and machined in USA on modern high-speed machining centers that can hold the tightest of tolerances. Why start your engine build with a dirty, old, worn-out production block that needs hundreds or thousands of dollars of machine work--when you can start with a new heavy-duty casting full of high-performance features. We ship these blocks mostly finished but leave the cylinder bore .005" undersize, your machine shop will have to hone them for proper size. You can rest assured that you have a great foundation for your engine build. Check out the features below! Additional details: • Available Versions Include: GM Small Block, GM LS, GM Big Block (coming Soon,) Ford Windsor 5.0 and 351W • Cast in Germany at a Tier 1 OEM foundry • Made with class 35 Iron Alloy, Higher tensile strength and harder than competitors' class 30 • Machine-finished in USA on precision hi-speed machining centers- All dimensions are very accurate! • Priority main oiling systems & Siamese Cylinder bores • Blind head bolt holes • 4-bolt main caps, 180,00 PSI main bolts included

5.0 out of 5 stars ( 11 )

$3,249.99

$3,349.99

FAST LSXR Intake Manifolds

The engineers at FAST teamed up with the airflow specialists at RHS to develop a 3-piece, polymer intake manifold. They are constructed from a proprietary advanced polymer material that offers a host of benefits over aluminum aftermarket intakes, including lighter weight and improved strength and heat dissipating characteristics. While they feature a 102mm air inlet that is perfectly suited to the FAST Big Mouth 102mm throttle body, they can also be used with stock or aftermarket 90mm or 92mm throttle bodies. Other features include integrated nitrous bungs and perfect bolt-on fitment that allows for the use of factory accessories without modifications or clearance concerns. FAST LSXR intake manifolds' 3-piece modular design allows for easy disassembly and porting. This new design gives you the ability to remove individual runners from the manifold for modification.

4.04 out of 5 stars ( 26 )

$1,496.95

Chevrolet Performance LSX 454 Long Block Crate Engines

Chevrolet Performance LSX 454 long block crate engines are built with an all-forged, super-tough rotating assembly and feature a pair of new deep-breathing LSX 6-bolt cylinder heads. They also come dressed with great looking, all-new orange powdercoated valve covers with an engraved LSX 454 logo. With a carburetor and high-flow Chevrolet Performance intake manifold (sold separately), these engines are good for about 627 hp and 586 lbs.-ft. of torque. Due to the number of application variations, the LSX 454 crate engines do not include an oil pan, and the valve covers do not include provisions for mounting the ignition coil brackets. Other specifications include: * 4.185 in. bore * 4.125 in. stroke * Cast iron LSX Series block with cross-bolted 6-bolt main caps * Forged steel crankshaft * Forged steel connecting rods * Forged aluminum 11.0:1 compression pistons * Hydraulic roller camshaft * 0.635 in. lift intake/0.635 in. lift exhaust, 236 intake/246 exhaust duration at .050 in. lift * Aluminum LSX-LS7 cylinder heads with 70cc chambers * 1.8:1 aluminum roller rocker arms * 58-tooth reluctor wheel

4.0 out of 5 stars ( 1 )

$16,249.06

BluePrint Builder Series LS376/530HP Standard Edition EFI Crate Engine and 4L65/70E Trans Combos

BluePrint Builder Series LS376/530HP Standard Edition EFI crate engine and 4L65/70E transmission combos take the guesswork out of matching up an engine and transmission for your ride. Featuring a fuel injected Chevy LS small block-compatible 376 (c.i.d.) engine that produces 530 horsepower, this standard edition builder series includes a choice of black or polished pulley kits and 4L65/70E automatic transmission. The aluminum BluePrint Engines cylinder heads help produce a nice 10.7:1 compression ratio, with assistance from the hydraulic roller camshaft, hypereutectic pistons, and nodular iron crankshaft. Altogether, this assembly produces 495 lbs.-ft. of torque. When you need or want a new LS powertrain for your ride, go with the authority in crate engines and their BluePrint Builder Series LS376/530HP Standard Edition EFI crate engine and 4L65/70E transmission combos. Other product features, items, and specifications include: Block: * New Cast Iron 6.2L * Main caps are 6-bolt * One-piece rear main seal * Reluctor wheel – 58x * Cam sensor – 4x (in timing cover) * Knock sensor provision on side Rotating Assembly: * Nodular iron crankshaft * Stroke – 3.622 in. * Connecting rods (6.098 in.) with 150,000 psi bolts * Hypereutectic pistons * Internally balanced * Non-weighted harmonic balancer Cylinder Heads: * BluePrint PS8015 models * Chamber – 72cc * Valves are 2.165 in. intake and 1.600 in. exhaust * Exhaust runners are 259cc intake and 102cc exhaust Camshaft: * Hydraulic roller * Intake valve lift – 0.612 in. * Exhaust valve lift – 0.585 in. * Intake duration at 0.050 in. of lift – 225 * Exhaust duration at 0.050 in. of lift - 238 * Lobe separation angle (LSA) – 113 degrees * Intake centerline – 110 degrees Ignition Timing * Firing order is 1-8-7-2-6-5-4-3 Assembled 4-speed Transmission Package: * Complete 4L65/70E package with electronic transmission controller * Torque converter with 2,200–2,400 rpm stall * Non-weighted flexplate * Starter Other Components: * Holley Terminator X Max Gen IV complete EFI engine management system, and DBW (Drive-By-Wire) pedal kit * DBW throttle body * GM Muscle-car Swap oil pan * Loaded intake manifold * Fuel injectors (EV6 type) and rail * Coil packs * Spark plugs and wires * Water pump * Complete front accessory drive includes A/C, power steering, alternator, water pump, belts, and pulleys * Champion 3015 spark plugs (0.040 in. gap) Note: BluePrint highly recommends their BPPLS01013 air intake kit to ensure proper MAF calculations (same used on Dyno). Recommended fuel is 91 octane. Recommended oil is BPP710.

Not Yet Reviewed

$22,699.00

$22,799.00

Summit Racing™ Pro LS Swap Aluminum Radiator and Fan Combo Kits

Summit Racing™ Pro LS Swap aluminum radiator and fan combo kits are available for most popular LS swap applications. The kits include a quality-constructed aluminum radiator to provide exceptional weight savings over stock equipment, fan shroud, and a radiator cap. The radiators come in a variety of configurations, each possessing their own unique combination of features, to work for the specific make and model vehicle that they're intended. Install one of these cooling aluminum radiator and fan combos in the front of the engine bay to neutralize the threat of overheating. Select the Pro LS Swap radiator and fan shroud combo designed for your application.

5.0 out of 5 stars ( 1 )

$979.99

$989.99

Callies Compstar Crankshafts

You're installing value without compromising quality with Callies Compstar crankshafts. Finished and inspected by Callies, Compstar cranks maintain proper geometry and design. Hardened with deep nitride, They're ideal for all types of abusive racing environments and available in a wide variety of strokes and journal sizes to fit most common cubic inch requirements. All rod journals are drilled and counterweights are profiled for piston clearance. Sometimes you need to race within a budget, but with Callies' consistent grind and polish, as well as their precise stroke and index, you don't need to compromise on quality. Choose Callies Compstar crankshafts--they're better by design.

4.6 out of 5 stars ( 10 )

$1,167.00

ACDelco GM Genuine Parts Superchargers

ACDelco GM Genuine Parts superchargers are designed, engineered, and tested to rigorous standards, and are backed by General Motors. They are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Make the right choice for your GM vehicle; choose ACDelco GM Genuine Parts superchargers.

Not Yet Reviewed

$2,357.99

FTI Performance Pro Powerglide Level 5 Transmissions

FTI Performance Pro Powerglide Level 5 transmissions are an unbreakable unit in an SFI-approved case. Equipped with the FTI creatively designed spiral springs and valve body, these units don't creep when the brake is set—a must in today's racing world. With in-house machining, these trannies are hand-assembled by one builder, so each clearance is set to exacting tolerances. The transmissions house the greatest advances in powerglide racing technology, and they're designed to withstand the rigors of today's high performance engines in an extremely demanding environment. Other features include: * 1500 advertised horsepower rating * Protree transbrake 250 lbs. * Lightened steel clutch hub * 1.80 straight cut planetary * Vasco input shaft * 8-clutch drum * Red race clutches * High-flow pump * 4340 output shaft

5.0 out of 5 stars ( 3 )

$4,899.00

Mishimoto Performance Radiators

Mishimoto performance radiators are designed and engineered to maximize cooling efficiency, boost engine functions, and, most of all, protect your engine from overheating. Many stock radiators can't handle the additional heat that comes higher horsepower levels. So, swap out your stock radiator for an all-aluminum Mishimoto. Key features and benefits of Mishimoto performance radiators include: * Available for universal and exact fit applications (no cutting or modifications required) * All-aluminum construction for optimal heat dissipation, improved strength, and reliability * Increased cooling capacity due to their massive core size * 100 percent brazed aluminum core for minimal distortion, low stress, and clean joints * Available in various sizes with 2-row or 3-row cores * TIG-welded for clean, strong welds and increased durability * Magnetic drain plugs capture metallic debris or fragments * Included high-pressure 1.3 bar cap raises the coolant boiling point for greater safety and efficiency * Automatic transmission and accessory coolers included where applicable

4.4 out of 5 stars ( 332 )

$259.95

$1,561.95

Eddie Motorsports Raven Series LS Chevy S-Drive Serpentine Pulley Drive Systems

Eddie Motorsports Raven Series LS S-Drive serpentine pulley drive systems for Chevrolet LS engines are the latest advancement in engine accessory kits on the market. These drive system pulleys and brackets are CNC-machined from 6061 T-6 aluminum and include stainless steel fasteners, as well as other necessary accessories: water pumps, alternators, serpentine belts, A/C compressors, billet aluminum water outlet, and a SFI approved balancer. Change the efficiency of your engine with a single 6-rib serpentine belt to drive all of your accessories.

Not Yet Reviewed

$2,650.00

Griffin Performance Fit Radiator Combos

Griffin Performance Fit combos offer the right fit with the right performance--and the right price! These high performance combos deliver cooling capability for extreme horsepower mixed with modern styling, do-it-yourself installation, and American craftsmanship. In these perfect combinations, Griffin packages their lightweight aluminum radiators constructed with 1.25 or 1.50 in. induction-welded MegaCool tubing, high performance electric fans, hand-formed aluminum shrouds, wiring harnesses, and radiator caps for a complete install. Choose the style and size needed to equip your ride with the ideal solution for engine temperature control--Griffin Performance Fit combos. * Griffin Performance Fit radiator combos may require modifications for installation. * See Griffin Exact Fit radiator combos for installation with no modifications.

4.01 out of 5 stars ( 236 )

$1,084.00

$2,381.00

ATK High Performance Chevy LQ4 6.0L 460 HP Long Block Crate Engines

ATK High Performance Chevy LQ4 6.0L 460 hp long block crate engines lay down impressive power that can be run with factory fuel injection or retrofitted with a carburetor. They're hand-built, balanced, and blueprinted using top-quality parts. Don't waste time trying to salvage a high-mileage short block when you can get a fresh mill that's ready for your choice of components to make it your own. ATK Chevy LQ4 6.0L 460 hp long block crate engines include: * Handpicked and seasoned 6-bolt main block * Aligned and honed main bores * OE steel crankshaft * 3.622 in. stroke * OE connecting rods * Hypereutectic dish top pistons * Aluminum cylinder heads * Hydraulic roller camshaft * Timing chain and gear set * 1.7:1 ratio rocker arms * 24-tooth reluctor

4.4 out of 5 stars ( 10 )

$5,049.99

Cold Case Performance Aluminum Radiators

Cold-Case performance aluminum radiators are available and affordable for all. These high-quality, tube-and-fin performance radiators are true OE styles for most applications. Each Cold-Case design distributes fluid more evenly, eliminating hot and cold spots. Also, the massive cores take up the entire width of their tanks, so you get the most efficient cooling possible. The radiators drop-in without modifications needed (on most) and look original. Plus, Cold-Case stands behind its quality and research with a limited lifetime warranty on their products. All Cold-Case radiators feature: * Lightweight, efficient aluminum construction * 100 percent TIG-welded * Internally welded filler necks offer a clean, factory look * Two oversized cooling rows for increased capacity * 1 in. to 1 1/4 in. tubes for higher volume * Works with factory filler cap * Includes OEM-style petcock * 42.7 percent lighter than comparable copper radiators * 30 percent thicker materials than no-name aluminum radiators * 60-day COOL guarantee

4.13 out of 5 stars ( 625 )

$432.54

$692.54

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