$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 60

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

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

On Sale

Hooker Blackheart Exhaust Systems

At the heart of any performance vehicle is its exhaust system. Hooker Headers, with its classic heart logo, has been at the core of the exhaust industry for years. They continue to push the boundaries of performance with their Hooker Blackheart exhaust systems line—part of a platform-designed full exhaust program. These components provide maximum exhaust velocity, ground clearance, style, performance, and quality. Order the configuration tailored for fitment on your specific vehicle. When it's time to tear the heart out of the competition—choose Blackheart! Depending on the application, features may include: * Full stainless steel construction for maximum strength and durability * High-efficiency crossovers and high-flow TIG-welded mufflers * OE-quality hardware (clamps, hanger rods, and rubber isolators) for excellent fitment and leak-free installation * Straight-through, no-muffler design on some systems for maximum flow and the most aggressive sound on or off the throttle * Downpipes available with or without high-flow cats * Quality welds for strength, longevity, and good looks * Utilize factory mounting points for ease of installation * Tube geometry designed for maximum ground clearance and hassle-free installation * Limited lifetime warranty * Dual-mode systems feature high-flow, straight-through, dual-path mufflers with bypass valve, utilizing the factory NPP actuator (mellow throaty tone with closed valve, and aggressive race sound with open valve) * Where applicable, they utilize OE-style AFM valves to prevent "check engine" light and reduce unwanted harmonics in 4-cylinder mode * Some systems feature dual-wall polished tips with laser-etched Hooker Blackheart logo * Some designed for off-highway race use only

4.5 out of 5 stars ( 46 )

$1,115.95

$1,149.95


$1,003.95

$1,033.95

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.

4.0 out of 5 stars ( 237 )

$837.00

$997.00

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 )

$816.54

Eagle Forged 4140 Steel Crankshafts

They're back! Eagle forged 4140 steel crankshafts fill the gap for more needed strength without the big price tag! Recommended for use up to 1,000 hp, these Eagle 4140 cranks will handle the performance demands of your competition engine, keep you on budget, and put a smile on your face! When you need more than a cast crank but don't want to step up to the more expensive 4340 steel model, Eagle forged 4140 steel crankshafts offer a lot of what you need for less dollars.

3.67 out of 5 stars ( 3 )

$776.99

$899.99

On Sale

Hooker Blackheart LS Swap Headers

Hooker Blackheart LS swap headers are constructed from mandrel-bent, 18-gauge 304 stainless steel. The headers are available with 1 3/4 in. or 1 7/8 in. primary tubes and 3 in. collectors—and tube geometry is designed for maximum clearance and hassle-free installation. Swap out that old iron and upgrade your overall performance with the Hooker Blackheart LS swap headers. Depending on application, features may include: * Lightweight 18-gauge, 304 stainless steel construction for good looks, maximum strength, and superior corrosion resistance * 1 3/4 in. primary tube diameter and 3 in. collector model is ideal for "hot" LS1/LS6/LS2/LS3/LS7 or 5.3L-6.0L engine swaps * Long-tube header design allows engine to breathe more freely, resulting in more mid-range and top-end power gains * 3/8 in. thick, CNC waterjet header flanges are used for strength and maximum sealing surface * All hardware included * Hooker Headers limited lifetime warranty

4.25 out of 5 stars ( 4 )

$1,049.95


$943.95

On Sale

Hooker Super Competition Headers

With Hooker Super Competition headers, the objective has always been to make the maximum horsepower possible and put it at the optimum point in the power curve. Hooker Super Competition headers feature tuned primary tubes to create optimum pressure between the intake and exhaust systems. Hooker Super Competition headers include premium exhaust gaskets and new mounting bolts. Unless otherwise noted, these headers are designed to fit the vehicle as it came from the manufacturer. This includes components like cylinder heads, chassis, steering, motor mounts, body mounts and bushings, etc. If your vehicle is using aftermarket components, parts from other applications, or custom altered parts, then it is the installer's responsibility to verify fitment.

3.67 out of 5 stars ( 227 )

$870.95

$999.95


$782.95

$898.95

LEED Brakes Rear Disc Brake Conversion Kits

LEED rear disc brake conversion kits add the safety, reliability, and performance of disc brakes to your vehicle. These kits are a direct bolt-on with no cutting, drilling, or welding required. All components are new, high-quality, and precision-machined. The heavy-duty parking brake caliper will allow you to use your stock parking brake cables to actuate the parking brake.

4.63 out of 5 stars ( 19 )

$834.99

$989.99

On Sale

RAM Powergrip HD Clutch Kits

RAM Powergrip HD clutch kits are the ultimate kit for extreme street and track performance. This race inspired clutch kit will provide more clamping pressure over a stock unit and can handle power levels up to 650 hp. All Powergrip HD kits feature an increased clamp load pressure plate, providing crisp clutch engagement with only a slight increase in pedal effort. The Powergrip HD clutch disc features RAM's premium 900 series metallic facing material on both sides. This allows the Powergrip HD unit to deliver maximum grip in an extreme high-horsepower street or racetrack application. These RAM Powergrip discs also utilize an 8-spring hub to maximize disc strength and durability. All kits include the pressure plate, clutch disc, alignment tool, and release bearing where applicable.

4.04 out of 5 stars ( 23 )

$869.00


$782.10

Bilstein B12 Pro-Kit Series Suspension Kits

Bilstein B12 Pro-Kits prove that sometimes two is better than one. The shock absorber experts at Bilstein and the spring professionals at Eibach teamed up to use their 120 years of combined experience to create these simple—but effective—kits. B12 ultimate suspension solutions fit your car with high performance Bilstein dampers and high-tech industrial Eibach lowering springs to deliver excellent handling and comfort. Order the Bilstein B12 Pro-Kit Series suspension kit designed for fitment on your vehicle.

4.45 out of 5 stars ( 20 )

$889.00

On Sale

Doug's Headers Stainless Steel Headers

Experience is in Doug's Headers DNA. They have been a respected name since the 1960s and remain one of today's most popular brands among muscle car enthusiasts who don't sacrifice quality and fit when it comes to their vehicle. Doug's stainless steel headers will give the greatest increases in horsepower and torque across the entire rpm spectrum, and they are meticulously designed to provide maximum power and the highest quality available. Available in many fitments, choose a set designed for your vehicle. Key features: * 304 stainless steel construction to prevent rust and corrosion * 3/8 in. thick machined flanges to prevent warping * Mandrel-bent tubes for an accurate fit and improved flow * Precision formed long transition collectors reduce backpressure * Header tubes have a natural stainless finish * Necessary mounting hardware, collector reducers or connector pipes, premium gaskets, and detailed installation instruction sheets are included

4.35 out of 5 stars ( 23 )

$1,060.95


$954.86

Dorman Driveshafts

Dorman driveshafts are designed to replace your factory originals with no modifications. They are manufactured from quality materials and have the stock connections for an easy bolt-in fit. The driveshafts are available in various lengths, diameters, and materials for many auto, truck, and SUV applications.

4.49 out of 5 stars ( 320 )

$781.99

$947.95

Manufacturer Rebate

MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converters

MagnaFlow OEM Grade Federal/EPA Compliant direct-fit catalytic converters provide your vehicle with high-emission compliance, the latest technology, and premium-grade components. Along with those benefits, you also get their industry-leading warranties, so you can drive with confidence. MagnaFlow converters are designed to the exact original equipment specifications, while being engineered to keep the "Check Engine Light" off. Features include: * Stainless steel construction * CNC-precision robotic manufacturing * Meets or exceeds EPA emissions requirements * Hassle-free, OE-like fitment tailored to your specific application * Limited 5-year/50,000 mile warranty on construction * Limited 25,000 mile warranty on emissions

3.93 out of 5 stars ( 14 )

$927.00

Eagle Forged 4340 Steel Crankshafts

Eagle forged 4340 steel crankshafts are great for high performance applications. They feature non-twist forging, undergo a multi-stage heat-treatment process, and are stress-relieved and shot-peened. These cranks are X-rayed, magnafluxed, and sonic-tested, so you know you're getting a top-quality piece. Each crankshaft has chamfered oil holes for improved oiling, a .125 in. radius on rod and main journals for increased strength, and the journals are precision-ground and micro-polished to less than 5 R.A. A target bob weight of +/- 2 percent greatly reduces balancing time. Many options are available; order the model recommended for your year/make and engine application.

4.4 out of 5 stars ( 53 )

$959.99

$1,099.99

On Sale

JBA Performance Exhaust Competition-Ready Headers

JBA Performance Exhaust competition-ready long tube headers are the number-one choice for maximum performance gains and high rpm efficiency. Their designs are dyno and race-proven to deliver the greatest possible increase in horsepower and torque throughout the rpm range. All JBA long tube headers feature large mandrel-bent stainless steel primary tubes, oversized exhaust ports, extra-thick 3/8 in. one-piece flanges, and patented merged collectors for smooth flow. Each system is designed to give the maximum amount of ground clearance possible so that lowered cars do not drag the collectors. And, in addition, each JBA system includes high-quality hardware and thorough instructions to provide a professional, no-leak installation.

4.01 out of 5 stars ( 97 )

$877.95

$1,020.65


$790.16

$918.58

Advance Adapters LS Series Gen III Manual Transmission Conversion Kits

Hook up to your GM manual transmission with Advance Adapters Gen III/LS Series flywheel and clutch kits. These conversion kits contain custom clutch components designed to adapt the Gen III/LS Series to your GM manual transmission. The flywheel is specially designed for the included high performance LUK clutch components. Do you have a special conversion? Advance Adapters LS series Gen III manual transmission conversion kits make change easier. Features include * Custom flywheel * 11mm flywheel bolts * 11 in. pressure plate and disc * Pilot bushing spacer * Throwout bearing * 10mm bellhousing bolts * 10mm lockwashers * XRP dowel bolts

3.2 out of 5 stars ( 5 )

$888.00

Manufacturer Rebate

MagnaFlow Direct-Fit Catalytic Converters

MagnaFlow direct-fit catalytic converters are designed for easy bolt-on installation for the professional installer. Welding, cutting, and tube-bending equipment are not required. These cats feature a ribbed body that minimizes expansion and distortion when the converters heat up. The ribs form a channel that protects the cushioning mat from direct exposure to exhaust gases, and they hold the ceramic catalyst in proper alignment. MagnaFlow converters use a monolithic honeycomb catalyst; the ceramic coating is designed for maximum flow and surface area, and the coating method is strictly controlled to maintain exact specifications. Improper coating could result in flow restrictions or an emissions test failure. These converters are designed to exact OE specifications and are available for the most popular vehicle makes and models.

4.07 out of 5 stars ( 423 )

$821.00

$1,105.00

The Driveshaft Shop Driveshafts

Factory driveshafts are made from a smaller tube (there are 2 different types) and will flex and bend during hard acceleration, causing the rubber drives to wear out prematurely. The Driveshaft Shop torque tube driveshafts are made from 3 x .125 wall 6061 T-6 aluminum and uses The Driveshaft's own custom machined ends. This ensures that the shaft will not distort or break like the factory units, and offer units rated up to 1000 hp. Choose the driveshaft designed for your vehicle.

5.0 out of 5 stars ( 3 )

$790.59

$1,031.98

BMR Watts Link Kits

Add the ultimate lateral differential location device to your vehicle with BMR Watts link kits. They locate the rear-end housing and eliminate lateral axle movement by keeping the differential centered under the car throughout the suspension's entire range of motion. Manufactured from heavy-duty rectangular or drawn over mandrel (DOM) steel tubing and laser-cut steel plate, BMR's kits are the ultimate in strength. Double-shear link mounts connect the adjustable links to the center pivot for strength and zero deflection. Center pivots use a double-shear mount with a greasable Delrin bushing for smooth, bind-free movement. The links are built from heavy-duty aluminum with left and right hand threaded rod ends for easy on-car adjustability. They feature zinc-plated, heat-treated, chromoly, self-lubricating, PTFE-lined rod ends and, where applicable, high-durometer polyurethane bushings. They also feature 304 stainless steel, custom-designed rod end spacers. BMR designed their Watts link kits to work well for street performance, drag race, and road race applications. They are 100 percent bolt-in and require no cutting or modifying of the chassis. The kits are adjustable, allowing for fine-tuning and bind-free suspension articulation. Center pivots can be installed in several positions for multiple roll center locations. With strength, adjustability, and zero lateral axle movement, they are the perfect upgrade for the enthusiast that requires maximum performance from their suspension. BMR Suspension's Watts link kits are available in black hammertone and red powdercoat for long-lasting good looks. Installation time is 3 to 4-hours.

3.0 out of 5 stars ( 1 )

$999.95

Clearance

Catco Direct-Fit Catalytic Converters

Since you have to use a catalytic converter anyhow, you might as well use one that will last a long time and maintain your vehicle's performance level in the process. Catco direct-fit catalytic converters feature 409 stainless steel shells, 16-gauge stainless steel pipes and nipples, and a heat-resistant sealed mat—all of which help them to last longer. These Catco units are direct replacements for OE converters and will install with little or no modification. Some converters have steel air tubes with perforated holes to help distribute the airflow evenly, without robbing power. New flanges are included when necessary. Order the model designed for your vehicle application.

4.25 out of 5 stars ( 53 )

$856.99

$976.99

Belltech Coilover Kits

Belltech coilover kits are designed to replace the factory shocks and coil springs. They include performance shocks with stainless steel construction, coilover springs, a dust boot, and a threaded shock body. Belltech coilover kits offer up to 3 in. of lowering adjustment and increase performance handling.

5.0 out of 5 stars ( 2 )

$825.00

$850.00

On Sale

Flowmaster Direct-Fit Catalytic Converters

Control your vehicle emissions with Flowmaster direct-fit catalytic converters. With designs available for hundreds of vehicles from the 1980s and up, these cats meet or exceed USEPA 49-state requirements. They feature stainless steel construction with compression-bent tubing and are ready to bolt-on. Select the replacement model and options recommended for your application.

4.47 out of 5 stars ( 106 )

$899.95


$808.95

BMR Manual Rack and Pinion Conversion Kits

BMR Suspension has developed a manual rack and pinion conversion kit that will eliminate bump steer and allow for more header clearance. They started with a clean slate and came up with kits for practically any application, giving you accurate control and steering response. BMR manual rack and pinion conversion kits have a straightforward, bolt-in installation requiring no fabrication or welding. All mounting hardware and installation instructions are included.

5.0 out of 5 stars ( 1 )

$979.95

$1,009.95

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