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CHEVROLET Chevy big block Mark IV Camshafts & Valvetrain

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Results 1 - 24 of 373

Summit Racing™ Hydraulic Lifters

Summit Racing™ hydraulic lifters are designed with two things in mind: High quality and affordability. We think you'll be happy with the results. These lifters have a lengthened plunger, designed for less wear and to provide precise oil control through 6,000 rpm.

3.54 out of 5 stars ( 103 )

$122.99

COMP Cams Thumpr Retrofit Hydraulic Roller Cam and Lifter Kits

Musclecar sound is back and nastier than ever with these Thumpr retrofit hydraulic roller cam and lifter kits from COMP Cams! These cams feature a thumping high performance idle and provide significant horsepower and torque increases. Specially engineered profiles are offered for each unique engine, providing the perfect combination of an early intake valve opening, a long exhaust duration, and a generous amount of intake and exhaust overlap to maximize your engine's nasty-idling characteristics without negatively impacting streetability. These kits include high-quality matched lifters for unbeatable performance, durability, and ease of installation.

4.64 out of 5 stars ( 22 )

$1,166.95

$1,545.95

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 ( 203 )

$46.95

$476.95

Summit Racing™ Link Bar Hydraulic Lifters

Summit Racing™ link bar hydraulic lifters are drop-in retrofit lifters designed to allow conversion to street hydraulic roller camshafts. These lifter bodies are machined from cold formed steel with clipped axles. They feature .700 in. diameter wheels and are designed for street use up to 6,500 rpm.

4.22 out of 5 stars ( 18 )

$620.99

COMP Cams Ultra Pro Magnum XD Roller Rocker Arms

Built to outlast and outperform in accuracy and strength, Ultra Pro Magnum XD roller rocker arms are engineered from durable 8650 steel and include a machined billet pushrod seat insert for a wide range of super accurate ratios. A unique and wide ratio range to fit almost any popular application from 1.5 to 1.8 in 0.5 in. increments for Chevy and 1.6 to 1.73 for various Ford applications is available. These Ultra Pro Magnum XD rockers are fully rebuildable and boast precision-sorted needle bearings and hardened roller tips. And, they work with most diameter springs and retainers. The XD design utilizes advanced FEA and CAD design and development to improve strength, stiffness and MOI (moment of inertia) optimization for drag and circle track applications.

4.58 out of 5 stars ( 59 )

$55.95

$634.95

Summit Racing™ Pro Series Stainless Rocker Arms

Summit Racing™ Pro Series stainless rocker arms will pay big dividends in performance! The arms are machined from premium-quality material to provide high yield strength and resist deflection, as well as extraordinary fatigue resistance. They feature full complement friction-reducing needle bearings—and incorporate an exceptional design that provides plenty of clearance for higher open valve spring pressures. Each rocker body includes polished top lines and is carefully assembled and inspected to provide the finest rocker arms available in today's racing and high performance industry. Order the set with size and ratio recommended for your engine application.

4.53 out of 5 stars ( 36 )

$357.99

COMP Cams Xtreme Energy Retrofit Cam and Lifter Kits

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

4.24 out of 5 stars ( 41 )

$1,166.95

$1,546.95

COMP Cams High Energy Hydraulic Lifters

These High Energy hydraulic lifters from COMP Cams feature a patented, constant orifice-metering valve that precisely meters oil to the rocker arms. Continuous contact between the metering valve and the precisely coined bottom surface of the pushrod seat is maintained throughout the engine's rpm range, eliminating excessive oiling at high speeds. The pushrod seat is made of a special powdered metal iron alloy, heat-treated for strength and wear resistance. The longer piston is produced with through-hardened steel that provides more bearing surface and increased lifter longevity. These lifters have a lightweight check valve disk that allows for quicker response, resulting in increased engine speed before valve float.

3.92 out of 5 stars ( 154 )

$14.95

$115.95

Crower Cutaway Severe-Duty Roller Lifters

Crower cutaway severe-duty roller lifters are a must for high-pressure, high engine rpm applications. These mechanical roller lifters feature a special alloy body, a lightweight design, and a heavy-duty blade that has been moved up to fit late model blocks. They are available in standard or offset sizes. Order the model designed for your specific application.

4.81 out of 5 stars ( 16 )

$138.99

$899.99

Jesel 2-Piece Upper Pulley Belt Drive Systems

Jesel 2-piece upper pulley belt drive systems are not just built to survive, they are built to thrive. These often-duplicated, but never-matched Jesel pulley belt drive systems are the most accurate and durable cam timing systems available. They are made with the finest materials and coatings, and then precision CNC-machined to go the distance in any race—and still be ready for more! Infinitely adjustable and track-proven to outlast chain drives, these upper pulley belt drive systems also can reduce the number of harmonics being transferred to the camshaft. Order the Jesel 2-piece upper pulley belt drive system that is designed to fit your needs. 2-piece upper pulley belt drive system features include: * 2024-T6 billet aluminum Spider * Heat-treated steel crank pulley * PTFE coated high-vacuum cam and crank seals * Grade 8 hardware * Patented HTD reinforced belt * Easy, accurate external cam timing adjustment

4.88 out of 5 stars ( 8 )

$1,325.00

$1,740.00

Cloyes Quick Button Two-Piece Timing Covers

These Cloyes Quick Button two-piece timing covers have a removable center plate with an O-ring seal to allow for easy access to your cam when changing your timing. Depending upon your application, some covers feature a built-in roller cam button that allows you to adjust cam endplay with the cover in place. Precision-machined from die-cast aluminum for sure sealing, these covers fit with most water pumps and timing sets.

4.34 out of 5 stars ( 137 )

$160.99

$193.99

COMP Cams Evolution Series Hydraulic Roller Lifters

COMP Cams Evolution Series hydraulic roller lifters with Hydraulic Cartridge Technology (HCT) are revolutionary patented tappets. A combination of a self-contained hydraulic cartridge within a thick-wall lifter body and accompanying reduced oil volume that is less effected by oil aeration delivers the most consistent bleed rates between each lifter on the market. The smaller volume within the hydraulic cartridge creates one of the most responsive and quietest lifters on the market today. Startup noise is greatly reduced, and a precision-controlled bleed down rate ensures excellent performance at high RPM. The cartridge design also allows for an incredibly stiff lifter body, greatly reducing body distortion and further ensuring consistent hydraulic performance. The patented HCT tappets are a completely new design that was developed specifically by COMP Cams to meet the demanding performance and durability required for modern street and performance street engines. The HCT and proprietary manufacturing processes of these lifters ensure precision and longevity that exceed any lifter on the market. Other features include increased duration and lift to the camshaft and two oiling features. Another industry first is the fact that the hydraulic element of this patented lifter is serviceable, allowing anyone to rebuild lifters in his or her own garage. Order the Evolution lifters recommended for your year/make and engine application.

3.92 out of 5 stars ( 12 )

$92.95

$726.95

Howards Cams Street Series Retrofit Hydraulic Roller Lifters

Howards Cams Street series retrofit hydraulic roller lifters are designed for street performance enthusiasts who want to upgrade to a hydraulic roller camshaft. They are manufactured to fit early or late model blocks, including blocks with tall lifter bosses. Howards Cams uses cold form technology to shape their bodies for durability. The lifters are then carbonitrided and tempered for hardness. They also feature hardened and tempered steel alloy roller wheels, heat-treated stainless steel cross bars, and high-alloy steel tie bar buttons. Howards Cams Street series retrofit hydraulic roller lifters are specifically designed for street applications up to 6,500 rpm.

4.06 out of 5 stars ( 90 )

$121.99

$646.99

Summit Racing™ Mechanical Lifters

These Summit Racing™ mechanical lifters are manufactured using the tightest tolerances in the industry, ensuring optimum performance. The crown of the lifters is ground to a precise radius for proper break-in and to guarantee long life. The Summit Racing™ mechanical lifters feature an oil-metering band milled to the correct depth to prevent too much oil from being delivered to the top of the motor and to prevent horsepower loss.

3.0 out of 5 stars ( 2 )

$109.99

Howards Cams Retro-Fit Hydraulic Roller Camshaft and Lifter Kits

Get more for your dollar with Howards Cams Retro-Fit hydraulic roller camshaft and lifter kits. You'll get more lift and power for less money with these street performance grinds. They're perfect for those wanting to upgrade to hydraulic roller cams. Howards manufactures their cams using the highest grade race-quality cores and precision-grinds their cams to provide the quality and performance that you want at a reasonable price. They've matched these hydraulic cams with a perfect set of their premium lifters. Overhaul your valvetrain for mild to wild street performance with Howards Cams Retro-Fit hydraulic roller camshaft and lifter kits.

4.57 out of 5 stars ( 69 )

$979.99

$1,039.99

COMP Cams Xtreme Energy DLC Hydraulic Flat Tappet Lifters

COMP Cams Xtreme Energy DLC hydraulic flat tappet lifters are quality yet inexpensive performance-proven lifters available in hydraulic and solid for multiple applications. These tappets feature a Diamond-Like Coating (DLC) face that forms an extremely hard, tough, and high-lubricity surface to reduce friction at the cam lobe/lifter interface, extending lifter and camshaft life significantly. The lifters maintain the excellent performance expected of a COMP product and are available for Chevrolet, Buick, Cadillac, Pontiac, Oldsmobile, Ford, Chrysler, and AMC applications requiring flat tappets. Additional details: * DLC: Diamond-Like Carbon * Wear-resistant * High lubricity * Cast-iron and steel camshaft compatible * Outstanding performance in Spintron durability testing simulation of an entire racing season * Excellent alternative to hard-to-find standard lifters

5.0 out of 5 stars ( 2 )

$60.95

$108.95

Summit Racing™ Aluminum Roller Rocker Arms

These rocker arms are CNC-machined from high-strength extruded aluminum and are heat-treated for reliability. These aluminum rockers are available in a variety of ratios for small or big block vehicles. To guarantee silky smooth valve operation, we gave them premium needle-bearing fulcrums and roller tips. Includes lock nuts.

4.71 out of 5 stars ( 75 )

$37.99

$363.99

Cloyes Street Billet True Roller Timing Sets

Offering a level of True Roller advantage for the value-racer, Cloyes upgraded the cam sprockets to feature the strength of billet steel and added critical functioning features. The billet steel durability, 9-keyway induction-hardened crank sprocket, .250 True Roller chain, and precise CNC machining together offer quality and adjustability unmatched in their class. Features include: • Billet steel cam sprocket • Induction heat-treated billet steel crank sprocket • 9 keyways allow +/- 8 degrees • Adjustability in 2 crank degree increments • True Roller chain with .250 in. diameter rollers

4.59 out of 5 stars ( 145 )

$88.99

$233.99

COMP Cams Magnum Roller Tip Rocker Arms

One way to increase power is to increase lift. That's what makes COMP Cams Magnum roller tip rocker arms so popular. They're one of the highest lift rockers you can get outside of racing. And, along with the lift, you also get a ball pivot roller tip to prevent valve stem and guide wear.

4.58 out of 5 stars ( 290 )

$20.95

$217.95

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Scorpion Race Series Rocker Arms

Sting the competition with the full-body design of Scorpion Race Series roller rocker arms. They're precision-crafted via high-tech manufacturing methods, then fully CNC-machined. These rockers offer more clearance for retainers and springs, and can easily handle .950 in. lift and 950 lbs. of open spring pressure. The surfaces are micro-polished and anodized for looks, protection, and maximum durability. Scorpion rocker arms are available in nearly 200 fitment options; order the set recommended for your application. More speed for your high performance passion! Additional features include: * Aerospace-grade 7000 Series aluminum for maximum strength and durability * Needle bearing fulcrum and roller tip * Precision-ground needle bearings * Centerless ground trunnion, ground pin, and roller * Burr-free trunnion through hole * Directed oiling * Large machined seat and thick-walled adjusting nut (polylock) * Pedestals machined from solid steel * Black oxide coated steel parts * 1.600 in. fulcrum width * Clear 1.625 in. O.D. valve springs

4.76 out of 5 stars ( 212 )

$25.87

$395.53

Summit Racing™ Cast Aluminum Timing Covers

Summit Racing™ cast aluminum timing covers are the perfect addition to your powerhouse. They feature a stout diecast aluminum design to keep true, and have thick gasket rails for rigidity and optimum oil sealing. With their show-polished finish, you'll be sure to turn some heads when you pop the hood. These replacement timing covers are available in a variety of styles, shapes, and finishes—for year/make and engine applications from 1955 and up.

4.13 out of 5 stars ( 116 )

$64.99

COMP Cams Ultra Gold ARC Series Aluminum Rocker Arms

Designed specifically for high performance street and race engines, COMP Cams Ultra Gold ARC Series aluminum rocker arms are precision CNC-machined to strict tolerances. They incorporate modern technology and design features to create the most advanced aluminum rocker arms available. Proven to withstand extremely aggressive spring pressure, the COMP Cams Ultra Gold ARC Series aluminum rocker arms use their CNC-machined aluminum design for high quality and the ultimate in ratio accuracy.

4.63 out of 5 stars ( 113 )

$46.95

$476.95

Isky Silver Series HPX Hydraulic Roller Lifters

Don't compromise your engine's performance or risk the well-being of your valvetrain with inferior lifters! Ensure consistent valve timing, efficient valvetrain operation, and maximum power with Isky Silver Series HPx needle-bearing hydraulic roller lifters. Isky Racing Cams uses advanced design and precision engineering to provide the quality that your ride deserves—find out for yourself when your order the Isky Silver Series HPX hydraulic roller lifters designed to fit your application.

5.0 out of 5 stars ( 11 )

$109.99

$853.99

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 )

$390.95

$708.95

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