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GMC 2500 SERIES Parts and Accessories

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COMP Cams Thumpr Hydraulic Flat Tappet Cam and Lifter Kits

COMP Cams is bringing the muscle car sound back, and it's nastier than ever! Let's face it--few things serve to grab our attention at a car show or cruise night more than a car with a thumping, high performance idle. In an ongoing quest to provide you with the performance and sound you demand, COMP Cams engineering team proudly introduces the Thumpr Series cam and lifter kits. The lobe profile and grind characteristics of these Thumpr camshafts use a combination of an early exhaust valve opening, a long exhaust duration, and a generous amount of intake and exhaust overlap to maximize the rough-idling characteristics of the cams. This gives you a seriously aggressive exhaust note without negatively impacting the power output or streetability of the engine. Thumpr camshafts are available in different grind profiles; each one will produce a rough, racy exhaust note and impressive amounts of horsepower and torque within a different rpm range. Thumpr Series cam and lifter kits deliver a substantial power increase over an identical hydraulic flat tappet grind without sacrificing reliability or ease of maintenance.

4.38 out of 5 stars ( 217 )

$589.95

Painless Performance 19-Circuit GMC/Chevy Truck Harnesses

Painless Performance 19-circuit GMC/Chevy truck harnesses consist of a new chassis-designed harness for use on 1963-66 GM/Chevy pickups. These harnesses include a pre-terminated fuse block and high-temperature, color-coded wire. Complete wiring from headlight to taillight. Includes circuits for: * Air conditioning/heat * Accessory/FWD switch * Backup lights * Charging * Dome * Electric choke * Emergency flashers * Fan relay * Fused power source * Headlights * Horn * Ignition coil * Instrument panel lighting and gauges (see notes above) * Parking lights * Radio (constant/ignition hot) * Starting * Taillights and trailer lights * Turn signals * Wipers

4.9 out of 5 stars ( 10 )

$624.99

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

4.05 out of 5 stars ( 200 )

$653.54

COMP Cams High Energy Cam and Lifter Kits

Increase your street machine's gas mileage and powerband performance! COMP Cams High Energy cam and lifter kits are designed for street engines with an 8:1 to 9:1 compression ratio. They also work well with all stock components, including intakes, exhaust manifolds, and carburetors. These kits offer good increases in both gas mileage and power throughout the rpm range for most street applications.

4.24 out of 5 stars ( 188 )

$518.95

ididit Retrofit Floor Shift Steering Columns

Better than stock replacements--ididit retrofit steering columns are designed to ensure a perfect fit and a flawless installation in your specific vehicle. The hot rod experts at ididit engineered these columns to fit in the factory location and, in many cases, will put your steering wheel back in its original location. Your column may include (depending on your application) 8-position tilt, self-canceling turn signals, 4-way flashers, a shaft, knobs, levers, and a wiring plug. Fitting your Ford, Chrysler, Chevy, or even Mopar classic with a perfectly planned aftermarket steering column is easier than ever, thanks to ididit retrofit steering columns.

4.53 out of 5 stars ( 226 )

$637.00

Holley EFI Dual-Sync Distributors

Precise timing control—Holley EFI dual-sync distributors are built with two Hall effect sensors for crankshaft and camshaft signals. The distributors can be used as just a crankshaft speed input or provide a camshaft sync signal for sequential fueling operation. They're also useful for crank and cam signals when running coil-on-plug applications. Dozens of models are available; order the one recommended for your vehicle/engine application. Some features of Holley EFI dual-sync distributors include: * CNC-machined billet aluminum housings with integrated LEDs for easy setup * Hardened steel distributor gear * Precision-machined shutter wheels that ensure accurate timing—even at very high RPM * Designed to be plug-and-play with Holley systems, but may be used with other EFI systems that support Hall effect crankshaft and camshaft sensors * Housings are available in a variety of finishes

3.35 out of 5 stars ( 37 )

$549.95

MechMan S Series Alternators

MechMan S Series 6-phase alternators offer incredible output in a compact and durable package. The 240 amp models offer the best balance between peak output, and output at engine idle RPM; while the 320 amp models are all about max power and not designed to charge at low idle speeds. Both S Series alternators feature 12 diodes, twin rectifier plates, and outstanding airflow ensure long service life, even in severe conditions. These units come equipped with a smaller 1.75 in. diameter alternator pulley, and will require a slightly shorter drive belt to be installed for proper belt tension. Order the model recommended for your auto application.

4.55 out of 5 stars ( 33 )

$519.00

$549.00

Centerforce Dual Friction Clutch Kits

Centerforce dual friction clutches generate up to a 90 percent increase in holding capacity over stock systems. These clutch-and-disc sets are designed for engines producing high horsepower and big torque outputs. Perfect for 4WD vehicles, all Centerforce clutch systems provide smooth engagement and light pedal pressure without compromising high performance.

4.67 out of 5 stars ( 315 )

$629.95

$661.95

Auto Metal Direct Truck Bed Repair Panels

Repair or restore your truck bed with Auto Metal Direct truck bed repair panels. They are application-specific. These EDP coated steel panels will fit in place of the stock panels.

4.16 out of 5 stars ( 62 )

$682.99

Auto Metal Direct Tailgates

Auto Metal Direct manufactures correct OE-quality replacement tailgates that will help you restore your vehicle to its original condition. AMD's tailgates feature durable steel construction and an EDP coating for rust resistance and are available with or without lettering for a variety of classic trucks. Order the tailgate that is designed for your year/make and model.

4.15 out of 5 stars ( 93 )

$625.99

COMP Cams Magnum Hydraulic Cam and Lifter Kits

Designed for hot street/strip cars, COMP Cams Magnum Series cam and lifter kits require a higher compression ratio, rear-end gear ratio, and stall torque converter than stock. With a very aggressive profile, these Magnum hydraulic cam and lifter kits provide maximum top-end performance for your high performance car.

4.38 out of 5 stars ( 142 )

$522.95

$603.95

Summit Racing™ Battery Pro Packs

Summit Racing™ battery Pro Packs combo an Optima RedTop battery, Painless battery cable kit, and a tray/hold-down kit for a complete install in your vehicle. The high performance AGM RedTop is Optima's ultimate starting battery designed to deliver a strong burst of ignition power for a reliable start-up every time. The batteries offer longer life, more vibration resistance, no maintenance, and are virtually spill proof and mountable in most any position. Painless Performance battery cable kits include a red 1-gauge positive and a black 1-gauge negative cable with lightweight abrasion-resistant insulation capable of handling over 250 amps and heavy-duty terminals already installed, side post adapters, and high-amp crimp ring terminals. Their 16 ft. length make them ideal for trunk-mounted batteries and custom installs. The battery tray/hold-downs are made from premium aluminum and chosen to match the battery in the Summit Racing™ Pro Pack selected.

Not Yet Reviewed

$550.97

Pypes H-Bomb Exhaust Systems

Pypes H-Bomb exhaust systems are designed to deliver enhanced performance, provide extra punch in the passing lane, and improve gas mileage. Systems are offered in different styles to cover a long list of years, makes, and models, and they are available without mufflers or with Turbo Pro (T), Race Pro (R), Street Pro (S), or Violator (V) mufflers. All Pypes H-Bomb exhaust systems are fabricated using the highest quality materials; 16-gauge, mandrel-bent, 409 stainless steel pipe ensures maximum exhaust gas flow, which can significantly boost horsepower, and the stainless construction enables them to resist corrosion and extend the life of the system. The mufflers, H-pipe, and OEM-style tailpipes are precision matched to deliver the ultimate in sound and performance. Cad plated or stainless clamps, stainless hangers, and polished 304 stainless tips are available and included in many systems. These systems can be installed at home without any special tools. Improve your vehicle's exhaust flow, power, and sound with one of the many Pypes H-Bomb exhaust systems available. Order the perfect fit for your car from Summit Racing®.

3.96 out of 5 stars ( 26 )

$549.79

$697.79

COMP Cams Drag Race Camshafts

COMP Cams drag race camshafts are offered in four styles: hydraulic flat tappet, hydraulic roller tappet, mechanical roller tappet, and mechanical flat tappet. These cams are ideal for the performance demands of the dragstrip, as well as street, strip, Circle Track, and other applications. Over a hundred models are available; choose the camshaft designed for your vehicle and engine family.

4.85 out of 5 stars ( 33 )

$531.95

$574.95

Sanderson Headers

No gaskets, please! Sanderson headers provide the only leak-free flange design that works! Their patented headers stem from over 50 years of performance. And, like your special project that you've upgraded to be better than the original, Sanderson headers are well-crafted and unique to many types of engines for many types of cars—offering you the best fit for your swapped, modified, and accessorized hot rod. They're crafted from 16-gauge steel with precision, laser-cut, 3/8 in. thick flanges. A weld bead is built up and uniformly ground around exhaust ports and bolt holes to such a precise thickness, all that's needed is a bead of Permatex Ultra Black gasket maker silicone. You'll have no more worries of warped flanges and blown gaskets! Choose the style, finish, and fitment tailored for your vehicle. Sanderson handmade performance headers—for your one-of-a-kind build!

4.21 out of 5 stars ( 296 )

$614.90

$700.11

Hurst Limited-Slip Differentials

Are you struggling for traction, or just have some terrible noise coming from the GM 12-bolt in your truck? Hurst limited-slip differentials offer great traction and strength but are not overly aggressive for the street. These differentials are 4-spring, composite, clutch-style, limited-slip carriers with internal gears machined from forged 4320 steel and stronger teeth. Get rid of that old open differential and upgrade to a limited-slip unit from Hurst. Choose the best gear ratio for your truck. Key features: * Fits 12T GM with 30-spline axles * Composite clutches for great drivability * 4320 chromoly spider gears for ultimate durability * Gears are cut to provide the strongest teeth possible in any terrain

4.5 out of 5 stars ( 2 )

$665.95

$699.95

On Sale

Hays Street 450 Clutch Conversion Kits

Hays Street 450 clutch conversion kits are an excellent upgrade offering up to 30 percent more holding power (clamping force) over your stock clutch. They're designed for handling stock to mildly modified engines—up to 450 horsepower. If drivability along with a stock pedal feel are the leading factors for your application, then order the Hays Street 450 clutch conversion kit recommended for your specific vehicle and engine size. Features, items, and specs: * Smooth, chatter-free operation using top quality organic composite friction surface material * Upgraded damper springs * Pressure plate * Clutch disc * Throwout bearing * Alignment tool * Instructions

3.38 out of 5 stars ( 8 )

$511.95

$584.95

Hays Classic Conversion Clutch Kits

Hays Classic clutch kits are the original Hays clutch! These conversion kits are the newest 26-spline version in the Hays clutch lineup, and are designed to work in conjunction with a modern 5-speed or 6-speed transmission swap. They feature an organic disc with an upgraded pressure plate for increased holding power over stock. They're designed for stock cars and trucks, or ones with minor performance bolt-ons, such as headers, intake, and exhaust. For clutch kits that are street-friendly, smooth, and reliable, consider the Hays Classic line of clutches—they're a great choice for your favorite muscle car, Jeep, or truck! Order the kit recommended for your vehicle application. Hays Classic conversion clutch kit features: * Includes 26-spline clutch disc for use with most 5-speed and 6-speed conversions * Steel back clutch disc features heavy-duty hub spring assembly for increased load capacity * Great drivability for power levels up to 400 hp * Clutch kit is painted signature Hays Classic orange color * Smooth, chatter-free operation using top quality organic composite friction surface material * Upgraded pressure plate gives you increased holding capacity over a stock clutch * Clutch kits come complete with pressure plate, disc, release bearing, and alignment tool (unless otherwise noted)

5.0 out of 5 stars ( 1 )

$511.95

$527.95

COMP Cams Xtreme Marine Camshafts

COMP Cams Xtreme Marine camshafts take advantage of the newest developments in camshaft engineering. Their aggressive lobe design produces better throttle response and top-end horsepower than other cams with the same duration at .050 in., while delivering increased engine vacuum. These cams are available for everything from pleasure boats to race applications, so you can always enjoy Xtreme performance on the water. From hydraulic and mechanical, to flat and roller tappet, COMP Cams offers camshafts for your watercraft dating as far back as the 1950s.

4.89 out of 5 stars ( 19 )

$549.95

COMP Cams Magnum Retrofit Camshafts

COMP Cams Magnum retrofit camshafts are designed for everyone from the serious street performance enthusiast to the all-out competition drag racer. Whether you're driving a street rod, show car with power accessories, a super gas, or super competition car on alcohol, COMP Cams will fit your engine's needs.

4.25 out of 5 stars ( 8 )

$549.95

FiTech Go EFI Fuel Tank Kits

FiTech has partnered with TANKS Inc. to make your EFI upgrade even easier with a comprehensive line of new FiTech Go EFI fuel tank kits. Fuel injection demands higher pressure from an electric fuel pump, and the best place to mount a pump is in the gas tank. FiTech's in-tank module is supplied with a 340 lph fuel pump to support up to 800 hp. The fuel pumps bolt directly into the tank's recessed mount, providing a modern EFI solution for hot rods, classic trucks and muscle cars. FiTech Go EFI fuel tank kits also include the following: * Direct-fit tanks feature internal baffles for constant fuel delivery * In-tank pump module secures the supplied 340 lph pump in the tank * -6 AN inlet/outlet that provides leak-free fuel line connections * Recessed sending unit and pump mount that provides added clearance

4.12 out of 5 stars ( 25 )

$638.00

Edelbrock Pro-Flo XT EFI Intake Manifolds

Edelbrock Pro-Flo XT EFI intake manifolds combine a user-friendly design with the latest technology. They're manufactured from aluminum and are available in a natural, polished, or black powdercoat finish for ultimate protection. Pro-Flo XT EFI intakes feature eight equal-length tapered runners and a large plenum. The fuel-injected manifolds are designed to deliver maximum horsepower and a broad torque curve throughout the 1,500 to 7,000 rpm range. Choose the model designed for your vehicle and cylinder head style application.

3.69 out of 5 stars ( 16 )

$746.95

COMP Cams Xtreme Energy Camshafts

COMP Cams Xtreme Energy camshafts employ the latest cam technology to provide maximum performance. Whether your use is off-roading, towing, or street performance, there's an Xtreme Energy cam available for you. By using an aggressive lobe profile, these cams provide better throttle response and more top-end horsepower than equivalent cams from other manufacturers—while delivering increased engine vacuum. Hundreds of models are available for fitment on vehicles from 1955 to the present. Select the cam designed for your application.

4.59 out of 5 stars ( 350 )

$549.95

Powermaster PowerGEN Alternators

Powermaster PowerGEN alternators feature all of the quality construction and dependability the company is known for. They combine the looks of a generator with the output and reliability of an alternator. PowerGEN units offer one-wire operation, producing up to 90 amps, with a whopping 60 amps at idle—and a regulator is included with all models. Alternators are available in either black powdercoated, chrome, or polished finishes. Order the Powermaster PowerGEN replacement designed for use on your vehicle application.

4.65 out of 5 stars ( 170 )

$500.99

$599.99