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CHEVROLET IMPALA Engines & Components

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Results 1 - 24 of 47

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 ( 212 )

$589.95

$639.95

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.

4.22 out of 5 stars ( 180 )

$518.95

Moroso Drag Race Pans

Moroso drag race oil pans are available for hundreds of vehicle-specific applications. The sizes and configurations are built for easy installation and optimum performance. Our selection includes a variety of styles, materials, and fluid capacities for drag racing, street and strip, and road race usage. Order the replacement model designed for your ride.

4.23 out of 5 stars ( 57 )

$593.99

$698.99

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.

4.39 out of 5 stars ( 140 )

$522.95

$603.95

Summit Racing™ Pro Pack Oil Pan and Pump Kits

Summit Racing™ Pro Pack oil pan and pump kits include a new Summit Racing performance oil pan, a matching steel pickup with a performance screen, and a nodular iron high performance oil pump with a pump driveshaft. A cellulose/nitrile rubber Summit Racing™ oil pan gasket and a copper oil pump gasket are also included in these Pro Pack kits.

4.07 out of 5 stars ( 30 )

$506.94

$514.94

Fluidampr Harmonic Dampers

Using only three parts (a laser-welded sealed housing, an internal inertia ring, and highly viscous silicone fluid between the two), SFI-approved Fluidampr harmonic dampers can control all crankshaft vibration--not just a limited frequency range. As a result, you get reduced wear on the main bearings and timing gear, more stable valvetrain operation, and less chance of crank failure.

4.76 out of 5 stars ( 140 )

$518.47

$572.22

On Sale

Holley Retrofit Engine Oil Pans for GM LS Engines

Holley retrofit engine oil pans for GM LS engines are designed to install an LS engine in a variety of GM muscle car and truck chassis. They provide OEM fitment, OEM oil filter mounting, OEM oil cooler port provision, OEM engine NVH suppression, OEM flange gasket and sealing, proper structural rigidity, and OEM bellhousing attachments. The oil pans are manufactured from traditional high-quality cast aluminum and include a sump baffle, oil pump pickup tube, sump plug, oil filter stud, and oil passage cover.

4.64 out of 5 stars ( 246 )

$573.95

COMP Cams Xtreme Energy Retrofit Camshafts

COMP Cams Xtreme Energy retrofit camshafts are built to take advantage of the latest cam technology—and provide maximum performance. Whether your use is off-roading, towing, or street performance, there is an Xtreme Energy cam available for you. By using an aggressive lobe profile, these hydraulic roller tappet cams provide better throttle response, engine vacuum, and top-end horsepower than equivalent cams from other manufacturers. Choose the model and options designed for your engine application.

4.86 out of 5 stars ( 58 )

$549.95

Holley M/T Valve Covers

Holley M/T valve covers are flashbacks to 1972. Nothing was cooler than cruising in your hot rod with a Holley double pumper and M/T finned aluminum valve covers. Each Holley M/T valve cover is precision-manufactured with knockout plugs for stock PCV and oil fill installations. These covers feature polished top cover surfaces that may be used for engraving your name horizontally next to the deep heat dissipating fins. Available in your choice of black crinkle or a polished finish, each Holley M/T valve cover comes in retro packaging styled after the original. Order the pair designed for your engine application.

4.48 out of 5 stars ( 29 )

$549.95

$599.95

COMP Cams Magnum Solid Roller Camshafts

COMP Cams Magnum solid roller 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 or show car with power accessories … or a super gas, super competition car on alcohol, one of these cams will fit your engine's needs.

4.88 out of 5 stars ( 8 )

$549.95

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.

4.82 out of 5 stars ( 28 )

$531.95

$574.95

COMP Cams Sportsman Solid Roller Lifters

COMP Cams Sportsman solid roller lifters feature premium-quality, high-value components designed for sportsman and professional racing, along with high-end street machines. They're available in both needle-bearing and bushing configurations. Each design features two pressurized EDM oil feeds, as well as an edge-orifice feed to the wheel. This delivers a more reliable oil feed than most competing options. COMP Cams Sportsman solid roller lifters are also designed with a shallower oil band than competitors' versions for increased strength and rigidity, while internal machining helps to reduce weight. The body utilizes a skirted wheel that strengthens the lifter ears, and the skirt also provides more contact area with the lifter bore for further lifter stabilization. In addition, staked axles eliminate clips and provide robust axle retention. This feature increases the stiffness of the lifter ears and helps to prevent the ears from spreading. The COMP Cams Sportsman solid roller lifters are built from 8620 premium steel for increased strength and wear resistance and they feature a captured, stainless steel link bar design. The lifters also utilize a tapered and slotted link bar tower for reduced weight and improved aesthetics. Choose the size and options tailored for your engine application.

4.78 out of 5 stars ( 9 )

$888.95

Melling Stock Replacement Cam and Lifter Kits

Restore your engine to its true power potential with Melling's stock replacement cam and lifter kits. They're perfect for either replacement or stock rebuilds. Melling cam and liter kits also include a matched set of lifters so you won't have to worry about mismatched parts during installation.

4.2 out of 5 stars ( 20 )

$815.99

COMP Cams Thumpr Retrofit Hydraulic Roller Camshafts

COMP Cams is bringing back the musclecar sound—and it's nastier than ever! Few things 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 retrofit hydraulic roller camshafts. They are a series of camshafts designed for use in engines that were originally equipped with flat tappet camshafts. The lobe profile and grind characteristics 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. They give you a seriously aggressive exhaust note without negatively impacting the power output or streetability of the engine. Thumpr camshafts are available in three different grind profiles. Each one will produce a rough, racy exhaust note and impressive amounts of horsepower and torque within a different rpm range. COMP Cams Thumpr Series camshafts feature a cutting-edge hydraulic roller design that delivers a substantial power increase over identical hydraulic flat tappet grinds—without sacrificing reliability or ease of maintenance.

4.76 out of 5 stars ( 33 )

$549.95

Speed-Pro Forged Pistons

Speed-Pro forged pistons are made from extruded VMS-75 aluminum alloy that's forged under 3,000 tons of pressure to "near-net" shape. After that, they're machined to their final configuration. These pistons offer excellent strength and durability—and are capable of taking the punishment that's dished out on the street and in competition. They're available for a wide variety of applications, including OE replacements and all-out racing engines.

4.5 out of 5 stars ( 70 )

$531.99

$689.99

COMP Cams Ultra Pro Magnum Rocker Arms

Utilizing years of valvetrain design experience, the latest FEA stress analysis technology, and an exhaustive testing regiment (dyno and Spintron), COMP Cams engineering team left no detail to chance. Everything from casting techniques to valve spring clearance was scrutinized to ensure that Ultra Pro Magnum rocker arms not only lived up to the lofty standards of their predecessor, but also took stud mount rocker performance, stability, and value to a whole new level. The most noticeable advancement centers around their nearly unbreakable investment cast 8650 chromoly body. The arched, web-like design delivers a nearly 29 percent increase in strength and rigidity, while reducing the moment of inertia and optimizing the dynamic balance. The resulting rockers maximize lift and valvetrain control at high rpm. The increased retainer and valve spring clearances of the new design enable the use of large-diameter valve springs, retainers, and locks, without clearance or fitment issues. The new black oxide exterior finish offers a distinctive appearance, along with long-term corrosion resistance. The COMP Cams Ultra Pro Magnum rocker arms feature an oversized trunnion and precision-sorted needle bearings designed for use with high-load valve springs. These unique rockers also feature hardened roller tips for reduced friction and elimination of the valve stem "side loading" that causes premature valve guide wear.

4.76 out of 5 stars ( 200 )

$541.95

COMP Cams Xtreme Energy Cam and Lifter Kits

COMP Cams Xtreme Energy cam and lifter kits are built to take advantage of the latest cam technology and provide maximum performance. Whether your use is off-roading, towing, or street performance, there are Xtreme Energy options available for you. By using an aggressive lobe profile, they provide better throttle response and more top-end horsepower than equivalent kits from other manufacturers, while delivering increased engine vacuum. Order the model designed for your vehicle and engine application.

4.28 out of 5 stars ( 386 )

$554.95

$643.95

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.

4.5 out of 5 stars ( 8 )

$549.95

Edelbrock Rollin' Thunder Hydraulic Roller Camshafts

Make some noise with Edelbrock Rollin' Thunder hydraulic roller camshafts. Designed to improve horsepower and torque, they feature more aggressive profiles than conventional flat-tappet hydraulic cams without excessive valve overlap. Recommended for high performance street and strip use, Edelbrock Rollin' Thunder hydraulic roller camshafts work best from 1,500 to 6,500 rpm and are performance matched to Edelbrock Total Power Package components for proven performance. Features Include: * Performance--roller camshafts generate higher lift velocity and faster valve action for increased horsepower and torque gains * Drivability--produces great sounding idle with excellent vacuum at idle * Durability--the smaller surface contact area of roller tappets and their reduced friction, together with stronger camshaft material (hardened steel or iron) ensures longer camshaft life * Environmental--can use ILSAC GF-4 oil, which lowers emissions and does not require zinc or phosphate oil additives * Economy--reduced contact friction between the lifter and camshaft can increase fuel economy for better mileage

4.61 out of 5 stars ( 28 )

$555.95

Melling Select Billet Aluminum Oil Pumps

If you are serious about building the ultimate wet sump system, then these Melling one-piece billet aluminum oil pumps with their integral screen pickup are the only way to go. These pumps not only eliminate the potential disaster of the oil pump pickup falling off, but they also offer smoother oil flow with less internal drag, resulting in an actual increase of 5 to 6 hp. Melling Select billet aluminum oil pumps will fit in your existing Moroso, Milodon, and Stef's wet sump pans, there is no need to buy a new pan or to modify your old one. Melling Select billet aluminum oil pumps offer the absolute latest in cutting-edge technology. Additional features include: * Billet aluminum housing and cover with anodized hardcoat * Standard or high volume billet spur gears * Multiple pressure settings * Chromoly driveshaft extended into the pump cover for support * Integral pickup screen assembly with stainless steel wire mesh * Robust CNC-manufactured design * Chromoly intermediate shaft, optional pressure relief springs, and instructions

3.0 out of 5 stars ( 2 )

$565.99

$666.99

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 LST Series Solid Roller Camshafts

COMP Cams LST Series solid roller camshafts deliver "Low Shock Technology." These LST cams feature lobe profiles designed to maximize horsepower, while improving stability at higher rpm. They're also easier on the valve springs, enhancing durability and reducing load loss. For maximum horsepower with either stock or aftermarket pistons (choose the model suited to your application), COMP Cams LST Series solid roller camshafts are an excellent option for your build.

Not Yet Reviewed

$541.95

PRW Pro Series Shaft-Mount Rocker Arms

PRW Pro Series shaft-mount rocker arm kits are comprised of components from the finest manufacturers in the world. CNC machined billet steel pedestals, ground steel alloy rocker shafts, PRW alloy steel fasteners, and studs and bolts are included in the complete kits for a professional install. Each rocker body is relieved for extra valve spring clearance and anodized for added strength. Choose the kit designed for your vehicle.

Not Yet Reviewed

$775.05

On Sale

VEGE Remanufactured Cylinder Heads

VEGE Remanufactured cylinder heads are a popular choice for performance and value. With its advanced and efficient production process, backed by more than eight decades of experience, VEGE is able to supply remanufactured cylinder heads with a level of quality that equals that of new OEM products—at extremely competitive prices. The rebuilt cylinder heads are carefully inspected, cleaned, and then fully machined and assembled with top-of-the-line components. Unless otherwise noted, the assemblies include a cast iron or aluminum cylinder head, intake and exhaust valves, valve springs, retainers, locks, stem seals, rocker arm studs, and more. Many heads include rocker arms. Nearly a thousand models are available, for fitment on countless applications.

3.77 out of 5 stars ( 40 )

$509.99

$676.99

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