Engines & Components
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Welcome to your headquarters for horsepower—the place to get everything you need to build real power and performance! We’ve got competition-proven crate engines, performance-matched...
Welcome to your headquarters for horsepower—the place to get everything you need to build real power and performance! We’ve got competition-proven crate engines, performance-matched top end kits, and complete rotating assemblies from the biggest names in the industry. You can add a set of high-flow cylinder heads to your powerplant, upgrade your valvetrain, improve your oiling system, or drop in a new set of pistons. We also have a complete selection of crankshafts, connecting rods, harmonic balancers, pulleys, and engine brackets. We even have everything you need to restore the horsepower that time has stolen from your...
Welcome to your headquarters for horsepower—the place to get everything you need to build real power and performance! We’ve got competition-proven crate engines, performance-matched top end kits, and complete rotating assemblies from the biggest names in the industry. You can add a set of high-flow cylinder heads to your powerplant, upgrade your valvetrain, improve your oiling system, or drop in a new set of pistons. We also have a complete selection of crankshafts, connecting rods, harmonic balancers, pulleys, and engine brackets. We even have everything you need to restore the horsepower that time has stolen from your daily driver.
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Get smooth valvetrain performance! Chevrolet Performance LS rocker arms install easily on your LS cylinder heads without any modifications. Add some additional horsepower and increase your rpm capability with a set of Chevrolet Performance LS rocker arms.
( 3 )
$16.99
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$23.99
These Summit Racing™ Manufacturing and Engineering LS rocker arm bolts have been specifically designed for use with your GM LS1/LS6 engines. They feature a small 8 mm hex head with a flange and are manufactured from high-strength, SAE-rated steel. The bolts also have a black oxide finish applied for corrosion protection.
( 14 )
$38.99
Contemplating an upgrade to your LS engine? Check out our Summit Racing™ LS rocker arms, designed to add some more horsepower and increase rpm capability. These LS rocker arms are made of high-quality materials, and are available in various ratios to suit a range of applications.
( 8 )
$12.99
Summit Racing™ LS Series retrofit trunnion kits are the answer for LS engines with higher lift camshafts and heavier-than-stock valve springs. These trunnion bushing kits are designed to maximize peace of mind by completely eliminating the needle bearings and providing maximum lubrication to the trunnion—while also providing maximum load carrying capabilities many times greater than needle bearings. Rocker arm trunnion upgrade kits include: * 16 micro polished hardened steel pivots/trunnions * 32 high performance C932 bearing bronze bushings * 32 retainer clips
( 70 )
$179.99
Summit Racing™ Pro LS upgraded rocker arms feature high-quality rocker bodies that utilize the factory style pedestal mount. They are made of high-grade cast steel construction to ensure long-lasting durability and performance. This design replaces the factory bearing and powdered metal trunnion and utilizes a captive bearing design and a bearing steel trunnion. These rocker arms are a perfect upgrade for higher rate springs and performance camshafts. Summit Racing™ Pro LS upgraded rocker arms come preassembled with heavy-duty trunnion kits, which saves you time and the additional cost of an installation tool. Features include: • New body casting includes thicker webbing in critical areas for increased strength • Additional oiling provisions for the bearings • Heavy-duty clips or retainers • Durable captive bearing design and bearing steel trunnion
( 25 )
$25.99
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$328.99
Strengthen your valvetrain using Summit Racing™ billet LS rocker stands. Our bars are stouter than factory, and are precision-cut from billet aluminum, helping to limit flex and distortion. Get assistance with rocker arm control; choose a set of Summit Racing™ LS rocker stands for your valvetrain.
( 6 )
$94.99
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$99.99
On Sale
Performance-minded engine builders know there's an inherent issue with valvetrain deflection when using stock rocker arm mounting in Chevrolet Gen III-IV-cylinder heads. BTR LS shaft rocker kits are designed to significantly reduce deflection, thereby improving both performance and durability. Each kit features technology typically only found in high-end shaft rocker systems. These shaft rocker systems consist of a billet steel stand equipped with four shafts per cylinder head, fasteners and bearings. The shafts are made from genuine 52100 bearing steel. Each pair of rockers has five fasteners mounting them to the rocker stand, compared to the traditional single bolt per rocker configuration. These shaft rocker kits are ready for assembly using your existing stock rockers. (Rocker arm shafts are also available individually.)
( 15 )
$7.99
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$469.99
$7.19
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$422.99
COMP Cams retrofit trunnion kits for GM LS Series engines are designed to convert stock LS Series rocker arms into captured roller trunnions for high-rpm race applications. They include rocker arm trunnions, bearings, and retaining rings for a complete installation. Keep your valvetrain reliable throughout the entire rpm range with one of these GM LS rocker arm bearing upgrade kits. Kits include: * 16 rocker arm trunnions, LS-type retrofit * 32 rocker arm bearings, LS-type retrofit * 32 rocker arm retaining rings, LS-type retrofit * 16 bolts for LS trunnion kit * 2 washers for pressing trunnions
( 105 )
$184.95
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$222.95
On Sale
Add some punch to your Chevy LS1 engine—install a set of GM LS trunnion-upgraded OEM rocker arms from COMP Cams, the absolute leader in valvetrain technology! These upgraded rocker arms feature a stronger, more durable trunnion and captured bearing design to eliminate cageless needle bearing failure in stock LS rocker arms when loads are increased. Choose the COMP Cams rocker arm application (ratio) that will best fit your goals. Additional features include: * High-quality steel body * Black oxide finish for long-term durability * Increases lift capacity * Utilizes caged roller bearings * Trunnions are secured by snap rings * Meets or exceeds OEM specifications
Not Yet Reviewed
$563.95
$37.95
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$627.95
On Sale
"Bolt and go" is hard to believe, and yet the tech-savvy people and operations at Scorpion offer the only direct bolt-on--the LS Race Series rocker arms. You won't have to change your valve covers. These amazing aluminum rocker arms use factory bolts and are torqued to factory specifications. They possess all of the great quality features offered on all Scorpion rocker arms, like solid steel pedestals and black oxide coated steel parts, and they are 100 percent CNC-machined. Scorpion LS Race Series rocker arms are the quietest on the market and can be installed by the garage guy with know-how. Bolt on a set of Scorpions and sting your competition with LS Race Series rocker arms.
( 11 )
$47.01
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$775.77
$40.90
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$674.92
Add some punch to your Chevy LS with these Howards Cams LS Series direct bolt-on roller rockers. These roller rockers are easy replacements for your stock LS rockers and feature plenty of advancements that help you make more power and get better throttle response. Howards designed these roller rockers to be direct bolt-on pieces, so there is no need to change pushrods, guideplates, rocker studs, or valve covers, and your engine bay can keep that sleeper, bone stock look. These rocker arms are constructed from aluminum and feature needle-bearing fulcrums and roller tips to decrease friction and increase performance. Howards Cams offers these LS Series bolt-on roller rockers in either stock ratio or a high-lift, 1.80 ratio, so you can choose which one best fits your goals.
( 3 )
$52.99
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$689.99
Summit Racing™ OE rocker arms for LS Series bearing upgrade kits are specifically designed for those individuals who tend to use OE GM rockers with the pivoting/bearing upgrade. They're manufactured from high-strength, SAE-rated steel and sport a natural finish. For all of your part needs, go with Summit Racing™--quality, value-priced performance parts.
( 9 )
$11.99
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$93.99
PRW fulcrum upgrade kits for the GM LS Series engine are designed to improve your valvetrain performance by enhancing the rocker arms. They include replacement fulcrums, circlips, and fasteners. From there, you can decide on either drawn cup bearings, or silicone bronze bushings to complete your full set of 16. Transform your stock LS Series rocker arms into powerful performance trunnions with a fulcrum upgrade kit from PRW!
( 7 )
$138.68
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$190.02
The OE rocker arm bearing design is a proven weak link in high-performance LS engines because the bearings are unable to cope with high lift cams, higher valve spring pressures, and sustained high-RPM use. Plus, the uncaptured design allows the needle rollers to be ejected into the crankcase, potentially causing catastrophic engine damage. One way to fix these issues is with a full set of high-quality roller rocker arms. However, many builders prefer the lower cost and lightweight durability of stock rocker bodies. That's where Trick Flow's far less costly solution comes in. The Trick Flow® rocker arm trunnion upgrade kit includes 16 CNC-machined trunnions that are heat-treated and precision ground to tighter tolerances for reduced wear and significantly improved rocker arm control. Precision needle roller bearings withstand high performance cams, valve springs, and repeated high-RPM blasts. They are held captive by extra wide circlips to prevent the bearing walk-out problem of the OE design. The Trick Flow® trunnion installation kit takes all the hassle out of removing old trunnions and installing new ones, with easy installation using just a bench vise instead of a cumbersome hydraulic press like other kits. Best of all, no modification are required to the OE rocker arms to use these upgrade and installation kits! Features Include: • CNC Machined Trunnion - Heat Treated & Precision Ground • Tighter Tolerance & Radial Clearance • Captivated bearing for reliability • Designed for higher stresses and high RPM use • Improved rocker and valve control
Not Yet Reviewed
$163.99
The Trick Flow® trunnion installation kit takes all the hassle out of removing old trunnions and installing new ones, with easy installation using just a bench vise instead of a cumbersome hydraulic press like other kits. Best of all, no modification are required to the OE rocker arms to use these upgrade and installation kits!
Not Yet Reviewed
$64.99
On Sale
BTR V2 rocker arm trunnion upgrade kits are designed for LS truck-style rocker applications and feature trunnions with pre-installed inner race bearings. They're upgraded from the V1 models with a pressed inner race comprised of 52100 heat-treated bearing steel (over the more commonly used 8620 carburized steel). Additionally, these sets feature a self-oiling axle with priority feeding to the trunnion itself.
( 13 )
$159.99
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$179.99
$143.99
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$161.99
On Sale
BTR rocker arm trunnion upgrade kits improve your stock LS Series rocker arms with captured needle-style roller bearings. They'll provide more stability for your modified application. BTR upgrade kits include rocker arm bearings, trunnions, snap rings, and assembly washers. Replace weak stock LS components with BTR rocker arm trunnion upgrades to support your added power. Order the kit recommended for your year/make and engine application.
( 67 )
$0.50
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$129.99
$0.45
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$116.99
If you plan on adding performance to your street machine or building a serious racer, Harland Sharp Original Series roller rockers are recommended for you. Using the very latest manufacturing technology and only the very finest materials, the Original Series rockers incorporate race-proven enhancements, such as improved strength, performance, and lighter weight over conventional rocker arm designs. Don't settle for any old rocker arm--go with a true leader in roller rocker arm technology--Harland Sharp.
( 175 )
$90.99
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$653.99
COMP Cams introduces another industry first with their Max-Lift BSR shaft rocker systems, a bolt-in bushed shaft rocker system that increases valve train stiffness helping your engine achieve higher levels of performance. By tying all eight rocker arms together on a single shaft that fits in the stock rocker stand, COMP Cams has found a way to improve valve train dynamics, increase valve train stiffness and reduce deflection under extreme loads. The increased valve train stiffness created the BSR rocker system allows your existing cam to act like a larger camshaft by transferring more of the motion to the valve or the use of more aggressive, higher lift cams without losing control of the valve train. Take complete control of your valves with the COMP Cams Max-Lift BSR shaft rocker system.
( 3 )
$731.95
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$883.95
Melling rocker arms, available for both domestic and import applications, meet or exceed OEM specifications. Depending on the OE design specifications, Melling rocker arms are provided in either stamped or cast materials. Built from only the best materials and manufacturing processes available, they are perfect replacements priced right for your budget. Melling recommends installing new rocker arms with every engine rebuild to assure long engine life and efficient performance. Answer the little knock under your hood with replacement rocker arms from Melling--a supplier of quality engine parts.
( 74 )
$12.99
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$13.99
Our lightweight, CNC-machined aluminum roller rocker arms have premium needle-bearing fulcrums for stable operation, reduced friction and wear, plus increased horsepower. These pedestal-mount rocker arms are an easy upgrade on 1999 and later LS1/LS6 engines and don't require changing valve covers. The rocker arms come with pedestals and have an anodized finish.
( 28 )
$462.99
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$509.99
Chevrolet Performance rocker arm stands mount between the shaft and cylinder head for the correct rocker arm mounting position. These rocker arm stands are quality-made for a lifetime of service.
( 15 )
$62.99
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.
( 202 )
$51.95
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$595.95
On Sale
BTR rocker arm bolts are rough and tough. They provide the correct fit and performance, matching that of the originals. Featuring steel construction, precise threads, and a black oxide coating, BTR's bolts are available individually and in sets for many applications.
( 7 )
$1.99
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$44.99
$1.79
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$40.49
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