$25 Off $250 / $50 Off $500, on Summit Racing Brand Products - Use Promo Code: BUILDIT

$25 Off $250 / $50 Off $500, on Summit Racing Brand Products - Use Promo Code: BUILDIT

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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 402

Summit Racing™ Pro LS Connecting Rods

Summit Racing™ Pro LS forged H-beam connecting rods deliver industry-leading fit, finish, and durability at an affordable price. They're available in different size options, individually or in a set of 8. Check out the long list of premium features: * 4340 forged steel * Tested to over 1,200 hp in boosted applications * Designed for up to 5,000 ft. per minute avg. piston speed in Street and Drag applications * ARP 2000 rod bolts with 200,000 psi tensile strength * Dual ribbing on rod cap for maximum strength * Stroker clearanced--minor cylinder notching may be required * Accommodates most camshafts with 4.250 stroke * Bores finished to +/- .0001 in. * Balanced to within +/- 1 gram per end * Full-floating with precision-honed bronze bushing * Small-end supports the wrist pin with minimal side clearance for maximum shear strength * Each rod is magnetic particle tested to ensure flawlessness * Shot-peened finish to remove potential for stress risers

4.89 out of 5 stars ( 19 )

$699.99

Chevrolet Performance Hydraulic Roller Lifters

Chevrolet Performance hydraulic roller lifters are designed as direct replacements for your engine. These lifters were designed for use by GM to be used in performance engine builds and incorporate improved valving to allow higher rpm capability- what more can you ask for?

4.68 out of 5 stars ( 65 )

$553.04

Summit Racing™ Precision Cast Cylinder Head

Summit Racing™ precision cast cylinder heads are made from tough A-356 aluminum alloy and feature Permanent Mold "As-Cast" technology. Port accuracy is unrivaled--meaning CNC porting is not required to provide superior flow. The result is CNC-ported performance at a fraction of the price! We start with precision CNC-finished faces and bolt holes for accuracy and fitment. American craftsmen expertly size and install the manganese bronze valve guides and interlocking ductile iron seats before finishing with a competition-grade valve job. From there, the decks are given a final pass for superior finish. They are finish-assembled in the USA with top-quality components like PAC Racing springs, fasteners, one-piece 21 4N stainless valves, machined locks, Viton® seals and chromoly steel retainers. The final result is the performance you want and Summit Racing™ quality you TRUST!

4.46 out of 5 stars ( 13 )

$699.99

$709.99

On Sale

Holley Aluminum LS Valve Covers

Holley aluminum LS valve covers will give your Chevrolet LS Series engines a totally new look. Manufactured from cast aluminum, they come in four different finishes, and feature a billet aluminum oil fill cap. Some valve covers in this series eliminate the need for the factory ignition coil bracket. Instead, the coils bolt directly to the valve covers for a nice angled look! Holley aluminum LS valve covers reuse the factory gaskets and bolts, will work with .750 in. lift camshafts using stock-style rocker arms, and fit all ignition coils with 72mm spacing.

4.39 out of 5 stars ( 142 )

$849.95


$552.95

$749.95

Nick Williams Performance Drive-By-Wire Throttle Bodies

Nick Williams Performance drive-by-wire throttle bodies are precision CNC-machined from billet aluminum to meet the demands for increased airflow on the drive-by-wire LSX and LTX performance engines. These throttle bodies require an aftermarket intake to fit the larger diameter throttle blade. They use a 6-pin late model connector that works with late model wiring harnesses. Tuning is required for installation; and the Nick Williams Performance drive-by-wire throttle bodies come complete with stepper motor and electronics installed. There is no need to disassemble your factory throttle body. Order the model designed for your vehicle and engine application.

4.19 out of 5 stars ( 21 )

$690.00

$715.00

On Sale

AFR 210cc LS1 Enforcer Cylinder Heads

AFR 210cc LS1/LS2/LS6 Enforcer cylinder heads are available in standard and small bore applications. They feature Permanent Mold "As-Cast" Technology surfaces on the intake runners, exhaust runners, and combustion chambers that allow for extremely accurate and repeatable port location/performance. The budget-friendly heads are perfect for your OEM engine operating below 6,300 rpm. Fully assembled Enforcer models include the identical components found in AFR's higher end CNC-ported cylinder heads—such as PAC Racing springs, Viton® valve seals, machined bead valve locks (not stamped), hardened spring seats, and one-piece 8mm 21 4N stainless steel valves. The heads are available without any parts for the DIY. Sold as a single piece, two heads are required per engine.

5.0 out of 5 stars ( 2 )

$780.15


$562.80

$702.14

On Sale

Summit Racing™ Pro LS Camshaft and Lifter kits

You won't find a better quality cam for your LS-based engine than our Summit Racing™ Pro LS series of cams. These convenient combo kits enable you to get the cam along with the correct matching lifters. Pro LS cam, lifters, and trays are included in one easy-to-order part number. Whether for street/strip, turbocharged, or racing use, you'll find the kit recommended for your year/make and engine application.

5.0 out of 5 stars ( 4 )

$552.80

$601.55


$541.97

$591.97

Summit Racing™ Pro LS Forged Pistons

The Summit Racing Pro LS forged pistons are affordable and built to withstand the rigors of high boost and nitrous. These pistons are forged from Premium 2618 alloy - the strongest made. They have specially profiled piston skirts, which allow them to run a tight piston-to wall-clearance for maximum ring seal and minimal friction. They have many other high-tech features too! • Maximum ring-land thickness for power-adders • Dedicated forgings for the best strength-to-weight ratio • Multiple compression ratios specifically targeted for 4.8L, 5.3L, 5.7L, and 6.0L engines • Designed around Premium file fit rings with Gas-Nitride or Plasma steel tops and ductile Napier second rings • Available in versions for Gen. 3 Press-fit, Gen. 4 Floating, and Aftermarket 6.125 rods • Standard and Stroker versions available • Generous valve reliefs that work with both Cathedral port AND Rectangle port heads • Pressure-fed pin-oiling • Pressure seal groove in 2nd ring land for increased seal. • High-Speed brush deburring to remove sharp edges that cause detonation • Ultra-Modern 2.250 pin forgings clear the reluctor rings with stroker cranks • Durable Chromium Steel wristpins. • Replacement Singles Available

4.57 out of 5 stars ( 70 )

$622.99

$649.99

Painless Performance Fuel Injection Harnesses

For maximum power with exceptional drivability, transplant the power of fuel injection into your vehicle with Painless Performance fuel injection harnesses. All kits include straightforward instructions and TXL high-temperature, color-coded, and labeled wire for ease of installation. All fuel injection harnesses are 100 percent quality-tested on OmniScanners to ensure the viability of the circuits. Harnesses for both GM and Ford applications are available and they use genuine original equipment connectors for trouble-free installation and operation.

4.48 out of 5 stars ( 94 )

$569.99

$762.99

FAST Throttle Bodies

Are you looking for a high-flow billet throttle body? The FAST engineering team used the latest computer modeling software and real-world testing to produce these throttle bodies, which yield the maximum flow per square inch of cross-sectional area. All FAST throttle bodies are machined from super-strong 6061-T6 billet aluminum in precision CNC machining centers for consistent quality and light weight.

5.0 out of 5 stars ( 3 )

$739.95

Melling AFM/MDS Delete Combo

Melling offers their engine cylinder deactivation kits for converting active fuel management engines to non-active fuel management versions. These AFM (active fuel management) or MDS (multi-displacement system) delete combos include a variety of components to help complete the changeover. Order the Melling AFM/MDS delete combo best suited for your application. Each kit includes: * MDS delete camshaft (1) * Non-MDS hydraulic roller lifters (16) * Lifter guides for Non-MDS engines (4) Application dependent components include: * AFM/MDS solenoid plugs (4) * Camshaft thrust plate (1) * Variable Valve Tming (VVT) oil control valve (1) Notes: * When installing a delete cam, the active fuel management lifters must be replaced using non-active fuel management lifters. * The valve lifter guides used in non-active fuel management engines differ from those used in active fuel management engines and must be replaced for this application. * The AFM/MDS solenoids must be replaced using non-MDS plugs. * The vehicle engine control module/powertrain control module must be reprogrammed to turn off the active fuel management system in the operating software. * Pushrod length must be checked during installation to verify the correct length.

4.25 out of 5 stars ( 4 )

$634.99

ATI Super Damper Serpentine Series Harmonic Balancers

ATI Super Damper Serpentine Series harmonic balancers are patented and feature grooves for serpentine belts machined into the outer damper shell. The dampers come with six outer grooves for standard OEM drive systems—but eight and 10 grooves are available for supercharger or turbo applications. Serpentine dampers are offered in a variety of diameters, and crank hubs may be fitted with a 6-groove serpentine pulley to drive external oil pumps or vehicle accessories. The Serpentine Series Super Dampers fit all ATI GM-front crank hubs and can be adapted to many engine combinations, providing maximum flexibility. They're available in steel or lightweight, hardcoated aluminum. Features and benefits: * Eliminates torsional crankshaft vibrations * Exceeds SFI 18.1 specs * Black zinc chromate finished * Tunable, rebuildable, and extremely efficient at all rpms * Laser-engraved 360 degree timing marks

4.76 out of 5 stars ( 238 )

$518.95

$578.28

On Sale

Holley EFI Systems Wiring Harnesses

Holley offers a variety of direct replacement EFI wiring harnesses, including multi-port, sequential, and throttle body injection styles. These units are made with premium components to ensure better reliability and performance for your ride--and they're compatible with many engine swaps. Holley EFI systems wiring harnesses are sold individually or as a kit; choose the model needed for your fuel injection application.

4.77 out of 5 stars ( 31 )

$632.95

$699.95


$568.95

$628.95

Callies Compstar Connecting Rods

Better by design, Callies Compstar connecting rods offer high performance and a trouble-free engine build. Concerns about out-of-round, big-end bore sizing, repeatability, time-saving details, and upgrade costs are a thing of the past. Their forged 4340 steel rods are put through a lengthy stress-relief process and burnishing of threads and bolt spot faces to ensure dimensional repeatability, no matter how many times rods are torn down and reassembled. Pin bushings are chamfered and honed, parting line edges are generously chamfered, and bearing locating tab slots are deburred, all in an effort to save you time and trouble. ARP 2000 bolts and stroker clearances are standard with Compstar rods. Choose either their original H-beam design or heavy-duty I-beam designed rods. For high performance use right out of the box, plus value and peace of mind, try Callies Compstar connecting rods.

4.85 out of 5 stars ( 20 )

$696.00

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

4.41 out of 5 stars ( 334 )

$602.95

$678.95

MechMan S Series Billet Racing Alternators

The MechMan S Series of 6-phase billet racing alternators offers incredible output in a compact and durable package. Highly efficient, these units use less horsepower per kW than conventional 3-phase alternators. They feature 12 diodes, twin rectifier plates, and outstanding airflow to ensure long service life, even in severe conditions. The alternators are available for a broad range of domestic and import applications in 170 or 240 amp configurations—as well as a variety of finishes. (The 170 amp S Series unit uses a stock diameter pulley, making it perfect for high-rpm and racing use.)

5.0 out of 5 stars ( 9 )

$519.00

$554.84

DeatschWerks Fuel Injectors

DeatschWerks fuels your passion for performance with fuel injectors specifically designed and engineered for your Sport Compact, Modern Muscle, and European vehicles. DeatschWerks fuel injectors are manufactured to fit your OE harness, fuel rail, and manifold. Because they are application-specific, you'll spend less time installing and tuning, so you can spend more time enjoying the increased performance of your ride! They provide an excellent spray pattern and atomization for optimized idle and tuning. Each set is flow-matched both statically and dynamically, and flow-balanced to within one to two percent. A flow report is included with each set of DeatschWerks fuel injectors.

4.69 out of 5 stars ( 68 )

$519.00

$719.00

Cam Motion Lifters

Cam Motion lifters are available to fit your desired level of performance and budget. From economical stock replacements to their High Performance, Racing, and Premium lines of lifters, Cam Motion covers many applications. Their Premium hydraulic roller lifters feature cold-forged steel construction, precision-ground needle roller bearings and extra-long pistons, precision oil metering, and high-flow, quick-reacting check valves. Cam Motion lifters are available in factory tray/retainer-styles and tie bar-styles.

5.0 out of 5 stars ( 8 )

$603.35

$766.32

IHC Suspension Control Arms

IHC Suspension offers replacement control arms for countless truck applications—including models from Chevrolet, GMC, Ram, and Ford. The steel tubular arms are black powdercoated to resist rust and corrosion. Most of the kits include adjustable control arms to achieve the desired ride height, along with ball joints, polyurethane bushings, and hardware. Order the control arms recommended for your vehicle.

5.0 out of 5 stars ( 6 )

$550.00

$560.00

On Sale

MSD Blaster OEM Replacement Coils

When it comes to late model performance parts, nothing beats bolt-on and direct connection components—especially when they improve performance like these new replacement MSD Blaster ignition coils. They're designed with improved materials and windings to produce a stronger spark. This improved spark helps burn the fuel mixture more efficiently, resulting in smooth idle and heightened mid-range rpm power. Choose the OEM replacement designed for your year/make/model application.

4.71 out of 5 stars ( 622 )

$599.95

$749.95


$538.95

$673.95

Summit Racing™ Pro LS Turbo Manifolds

Summit Racing™ Pro LS turbo manifolds allow you to easily bolt a turbocharger to your LS engine. Built from heavy-duty cast stainless steel with features, such as extra-thick flanges, V-band crossover adapters, and built-in wastegate mounts, our Pro LS turbo manifolds can handle all the heat and horsepower you can throw at them. Features: • Universal turbo manifolds • Single or dual mount designs • T4 flanges • Built in 44 or 45mm wastegate flanges • 304 cast stainless steel • Fits all LS exhaust ports

4.11 out of 5 stars ( 9 )

$599.99

Cold Case Performance Aluminum Radiator Modules

Cool just got better! Cold-Case performance aluminum radiator modules bundle performance components for the most efficient cooling available. They've packaged their high-quality radiators with their exact fit shrouds and electric fans to deliver the best fit with an original look, an easy install, and effective cooling at an affordable price. Order the universal or application-specific model best suited for fitment in your engine bay. All Cold-Case radiator modules feature: * OEM-stamped, fully polished tanks * Aluminum shroud * Electric fan(s) * Correct OEM fitment * 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

4.01 out of 5 stars ( 190 )

$653.54

$816.54

On Sale

JBA Performance Exhaust Cat4ward Headers

Increase your horsepower and torque with JBA Cat4ward headers! They are designed with 3/8 in. thick laser-cut flanges, mandrel-bent primary tubes, and feature JBA's patented Firecone merge collectors. They're available in either steel or 409 stainless steel and are offered in a chrome plated or high-temperature silver ceramic finish for most applications. JBA includes premium-quality mounting hardware and instructions for the installation and, unless otherwise noted, these headers are designed to fit the vehicle as it came from the manufacturer. This would include components such as cylinder heads, chassis, steering, motor mounts, body mounts, bushings, etc. If aftermarket components, parts from other applications, or custom-altered parts are used on your vehicle, it is the installer's responsibility to verify fitment.

4.26 out of 5 stars ( 511 )

$670.00

$881.65


$603.00

$793.48

Corsa Carbon Fiber DryTech 3-D Air Intakes

Corsa carbon fiber DryTech 3-D air intakes blend aesthetics and engineering to deliver in a single package. The intakes efficiently direct airflow from the filter to the throttle body. Streamlining the airflow eliminates any calibration concerns, and helps increase throttle response. Features include: * 100 percent carbon fiber construction * Outflows stock intake creating more horsepower and torque * DryTech 3-D synthetic dry filter

4.5 out of 5 stars ( 6 )

$675.99

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