36 Results Found For "arms"

Jesel Sportsman Series Shaft Rocker Arms

Since their release, Jesel Sportsman Series shaft rocker arms have proven themselves to be the ultimate replacements for inadequate stud rocker assemblies on OEM and aftermarket cylinder heads. The 2024 aluminum bodied rocker arms are designed to withstand open spring pressures of up to 900 lbs., while maintaining precise valve lash settings. They are designed to bolt on with little to no cylinder head modifications and in most cases still fit under a stock valve cover. The rocker geometry is preset and engineered using the common valve supplied with the specific cylinder head to provide a bolt-on-and-go installation. If you're still spending aggravating hours adjusting your stud rockers only to have to repeat the procedure the next weekend, Jesel Sportsman Series shaft rocker arms are your solution. Choose a set designed for your application.

4.23 out of 5 stars ( 26 )

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 ( 115 )

Scorpion Endurance Series Shaft Mount Rocker Arm Kits

Scorpion Endurance Series shaft mount rocker arm kits strengthen your valvetrain for high performance! These "over-engineered" shaft mount rocker arms mean that you'll get the ultimate design and enduring qualities that have been track-tested and proven to "sting" your competition. Endurance Series kits are built to perform lap after lap and race after race with top materials, plus the latest cutting-edge manufacturing and finishing processes. Add stamina and energy to your high performance racing engine with lightweight Scorpion Endurance Series shaft mount rocker arm kits. Kits feature: * .562 in. centerless ground shaft * .520 in. centerless ground roller * Steel parts made from ASTM-certified bearing quality steel * 120 gram assembled body * .625 in. adjuster engagement * 4140 heat-treated steel stand * Fully radiused bodies made from 7000 Series aluminum * Needle bearing fulcrum and roller tip * Anodized for additional strength and protection * Black oxide coated steel parts * 100 percent CNC machined * Available in many ratios

5.0 out of 5 stars ( 1 )

COMP Cams Shaft Mount Aluminum Rocker Arms

COMP Cams shaft mount aluminum rocker arms are one of the most cost-effective ways to increase horsepower. These shaft rockers were designed using the latest in computer software and engineering. They center the roller tip over the valve tip at the correct time so that the roller tip is never more than 0.020 in. off-center of the valve tip. At the greatest load point, the roller tip contact is on the center of the valve. At valve closing, the roller tip contact is slightly behind the valve centerline. When the valve is at full open, the tip contact is slightly behind the centerline of the valve. The results are more horsepower and better performance.

5.0 out of 5 stars ( 1 )

COMP Cams LS1 Gen III Aluminum Shaft Rockers

These COMP Cams LS1 Gen III aluminum shaft rockers are CNC-machined for accuracy and precision alignment. They feature pressurized internal oiling to ensure long life and reduced friction. These rockers require minor valve cover machining and deliver the adjustability needed by most performance modifications.

Not Yet Reviewed

BluePrint Engines Muscle Series Cylinder Heads

Welcome to a new class of high performance cylinder heads--BluePrint Muscle Series! These aluminum heads are assembled with the perfect match of components for outstanding, trouble-free performance. Plus, they give you more power behind the wheel and in your wallet! These all-cast heads are designed for hydraulic flat tappet and hydraulic roller cam engines with hefty intake runners, stainless steel valves, Viton® seals, and dual springs. BluePrint Engines stand in front of the class, offering both performance and cost-conscious enthusiasts a powerful alternative--Muscle Series cylinder heads.

4.55 out of 5 stars ( 89 )

Trick Flow® PowerPort® 240 Cylinder Heads for Big Block Mopar

Once you see Trick Flow® PowerPort® 240 heads for big block Mopar in action, you'll agree they are the only aftermarket aluminum heads worth using on your engine! What makes PowerPort® 240 heads so great? For starters, they're made from premium grade A356-T61 aluminum. That's important because it weighs a lot less than cast iron and is very strong. Trick Flow® engineers then fixed the shortcomings of the factory head design by relocating the oil holes for the rocker shafts and optimizing the shape of the runners to increase flow velocity and add much needed strength to the shaft bosses. Fully profiled combustion chambers and CNC Street Ported runners guarantee proper dimensional accuracy and balanced flow from runner-to-runner for maximum power potential. Additional advantages of PowerPort® 240 heads over stock heads include clearance for 3/8 in. pushrods, ductile iron valve seats, bronze alloy valve guides, and multi-angle valve seat machining on precision Serdi® equipment. Assembled cylinder heads come with premium 11/32 in. stainless steel valves, Trick Flow® by PAC Racing valve springs, chromoly and titanium retainer options, and 7 or 10 degree steel valve stem locks. Since swapping cylinder heads can be a costly and time-consuming process, Trick Flow® designed the PowerPort® 240 heads to accomodate all factory-style big block Mopar pistons. They are also manufactured to accept aftermarket roller rocker arms, intake manifolds, and headers. They are available fully assembled or as bare castings. Sold individually.

4.88 out of 5 stars ( 32 )

Trick Flow® PowerPort® 270 Cylinder Heads for Big Block Mopar

Trick Flow® PowerPort® 270 Max Wedge-style cylinder heads will significantly improve the power of your big block Mopar right out of the box. How? Well for starters, PowerPort® 270 heads are made from premium grade A356-T61 aluminum. That's important because it weighs a lot less than cast iron and is very strong. Trick Flow® engineers fixed the shortcomings of the factory head design by relocating the oil holes for the rocker shafts and optimizing the shape of the runners to increase flow velocity and add much needed strength to the shaft bosses. PowerPort® 270 heads also feature larger, raised Max Wedge-style intake runners that provide a straighter path to the valve for improved airflow. The runners are treated to Trick Flow's® signature high resolution CNC Competition Ported surface finish that guarantees proper dimensional accuracy with balanced flow from runner-to-runner for maximum power potential. Additional advantages of PowerPort® 270 heads include clearance for 3/8 in. pushrods, ductile iron valve seats, bronze alloy valve guides, and multi-angle valve seat machining on precision Serdi® equipment. Assembled cylinder heads come with premium 11/32 in. stainless steel valves, Trick Flow® by PAC Racing valve springs, chromoly and titanium retainer options, and 7 or 10-degree steel valve stem locks. They are available fully assembled or as bare castings. Sold individually. Since swapping cylinder heads can be a costly and time-consuming process, Trick Flow® designed the PowerPort® 270 heads to use all factory-style big block Mopar pistons. They also are manufactured to accept aftermarket roller rocker arms, and headers. A Max Wedge-style intake manifold is recommended for best performance.

4.92 out of 5 stars ( 12 )

Trick Flow® Ultra 18® 250 Cylinder Heads for Small Block Chevrolet

Take the 18 degree power leap! Ideal for drag and high-rpm circle track racing, Trick Flow® Ultra 18® 250 cylinder heads make serious horsepower right out of the box. In fact, the heads deliver higher airflow numbers than fully prepped 23 degree small block Chevy heads. These heads feature Trick Flow CNC-profiled combustion chambers and CNC Competition Ported runners with a premium high resolution surface finish for maximum flow and performance. The heads accept most current 18 degree intake manifolds, headers, and other components. They require the use of offset shaft-mounted rocker arms and a mechanical roller camshaft with offset intake lifters. Trick Flow® Ultra 18® cylinder heads are available fully assembled or as bare castings and sold individually.

Not Yet Reviewed

Chevrolet Performance Bowtie Aluminum Cylinder Heads

Chevrolet Performance Bowtie aluminum cylinder heads offer an ideal combination of street drivability and drag-strip performance. These aluminum cylinder heads provide a broad power range with ample low-end torque, along with excellent throttle response, good mid-range torque and enough top-end power to beat your competitors to the finish line. Designed for high performance applications, the Bowtie Street cylinder heads are manufactured to precise machining tolerances, with thick deck surfaces and high-velocity airflow passages. They are available in either rectangular or oval intake port configurations. The rectangular intake ports are larger in volume and have been designed to enhance high-rpm horsepower, which makes them best for vehicles that see frequent drag-strip action. Cylinder heads with oval intake ports are smaller in volume and designed for greater low-rpm torque, therefore they're best for street applications, where lots of bottom end, off-the-line power is desired. Bowtie Street Cylinder Head Technical Notes: * Made from 356-T6 aluminum * Available in rectangular or oval-port designs * Will work on Mark IV and Gen V, VI blocks * 9/16 in. thick decks * As-cast intake and exhaust ports * No heat risers * 1.55 in. valve spring seat diameter * Heli-coiled 7/16 in. screw-in rocker stud holes * Designed for use with 3/8 in. pushrods * Use intake gasket P/N 12366985 and bolt kit P/N 12367959 * Use head gasket P/N 12363414 for bores to 4.370 in. and P/N 12363413 for bores 4.470 in. to 4.540 in. (Mark IV) * Use head gasket P/N 12363412 for bores to 4.370 in. and P/N 12363411 for bores 4.470 in. to 4.540 in. (Gen V, VI) * Use head bolt kit P/N 12367779 Bowtie Oval-Port Aluminum Cylinder Head Assembly: * Completely assembled with 2.250 in./1.880 in. 11/32 in. stem valves * 290cc oval intake ports * 110cc exhaust ports * 110cc combustion chambers Cylinder head is assembled with the following components: * 2.190 in. intake valves * Valve spring retainers * 1.880 in. exhaust valves * Valve locks * Valve springs * Valve seals * Valve spring shims * Rocker arm studs * Pushrod guideplates

Not Yet Reviewed

Pacific Performance Engineering CNC-Ported LLY/LBZ/LMM Cast Iron Cylinder Heads

PPE's CNC-ported LLY/LBZ/LMM cast iron cylinder heads are the ultimate upgrade to your Duramax engine to eliminate any head gasket or cracking concerns. Cast from high-quality alloyed gray iron, the PPE cylinder heads offer elevated fatigue strength, heat, and creep resistance, which prolongs the cylinder head's lifespan significantly. The cylinder heads also share the same heat expansion rate as the stock cast-iron cylinder block—no more blown head gaskets! PPE's CNC-porting process improves airflow, enhancing power, fuel efficiency, and throttle response while reducing engine stress and turbo lag. By smoothing the ports and maintaining wall thickness, these heads provide increased horsepower and torque without sacrificing reliability. Tailored to each specific head, the CNC machining compensates for casting variations, ensuring consistent and optimized airflow dynamics. Whether you have a damaged aluminum cylinder head or a desire for better reliability and longevity on your Duramax engine, cast iron cylinder heads from Pacific Performance Engineering are undoubtedly the best choice. Product features: * Specially alloyed gray cast iron liquid-cooled cylinder head * 5-Axis CNC-ported intake and exhaust ports for smooth, unrestricted airflow * Increased thermal efficiency compared to aluminum heads * Reduced noise and vibration, better ride * Eliminates head gasket scrubbing issue (blown head gasket) * Higher fatigue strength and heat resistance * Premium 21-4N, Stellite-reinforced exhaust valves * Fully nitridated valves, better abrasion resistance * Ready to install—comes with all valvetrain components, rocker arm dowels, and freeze plugs * Requires the use of LBZ/LMM glow plugs on LLY engines (sold separately) Important Notes: The valve seats of the PPE heavy cast iron cylinder heads are installed with an interference that maximizes the durability and lifespan of the cylinder heads. Such interference might not be optimal for extreme-performance applications where a significant amount of heat is created. For those applications, PPE suggests that the exhaust valve seats be replaced with higher interference (+0.006 in. to +0.008 in.) oversized exhaust valve seats (Nominal size 34mm).

Not Yet Reviewed

Trick Flow® Twisted Wedge® 11R 227 Cylinder Heads for Small Block Ford

Twisted Wedge® 11R 227 cylinder heads represent Trick Flow's ultimate development of the Twisted Wedge® innovation, featuring Trick Flow's most efficient combustion chamber design. The combustion chamber and valve layout move the intake valves away from the cylinder walls to reduce valve shrouding, significantly improving flow at higher lift. Shallow 11° intake/13° exhaust valve angles improve piston-to-valve clearance for high lift cams and reduce chamber volume for improved compression and efficiency. High velocity runners are optimized on the flow bench and dyno proven to outperform the competition on hydraulic roller camshaft engines. Premium materials and components, along with world-class CNC processes, guarantee uncompromising quality and durability, dimensional accuracy, and balanced flow from port-to-port. Machined castings increase strength and have a billet-like appearance. Additional features include CNC-profiled combustion chambers, 2.080"/1.600" stainless steel intake/exhaust valves, Trick Flow® by PAC Racing valve springs, and titanium retainers. Twisted Wedge® 11R 227 heads have CNC Competition Ported runners with a premium high- resolution finish for ultimate performance. Cylinder heads are available fully assembled or as bare castings. Sold individually. Key Features: • 227cc intake ports and 56cc or 66cc combustion chambers • 2.080 in. stainless steel intake valves • 1.600 in. stainless steel exhaust valves • .625" thick deck • Titanium retainers • 11 degree intake valve angle • 13 degree exhaust valve angle

Not Yet Reviewed

Trick Flow® GenX® 255 Cylinder Heads for GM LS3

Trick Flow engineers used the best features of OEM GM LS3 and LS7 cylinder heads, combined with their own race-winning engineering and technology, to create the GenX® 255—the ultimate ultimate square port LS cylinder head for 4.000" and larger bore engines. The heads feature fully CNC Competition Ported runners with a premium high resolution surface finish for maximum airflow and performance potential. Stock LS3 ports accommodate LS3-style intake manifolds and LS9/LSA blower assemblies. The valve angles have been changed from 15° to 12° to increase piston-to-valve clearance and allow the use of larger camshafts. The coolant holes through the head deck were redesigned to work with all LS head gasket and engine block combinations. GenX 255 heads are available with standard or 6-bolt per cylinder mounting patterns. Trick Flow GenX 255 cylinder heads are emissions-legal under CARB E.O. #D-747 for 2007-present GM vehicles with 6.2L engines. They are available fully assembled or as bare castings. Sold individually.

4.0 out of 5 stars ( 7 )

Trick Flow® GenX® 280 Cylinder Heads for GM LS3

Not Yet Reviewed

Trick Flow® PowerPort® Cleveland 225 Cylinder Heads for Ford 351C, 351M/400 and Clevor

Designed for high performance street/strip engines! Trick Flow® PowerPort® Cleveland 225 cylinder heads feature runners based on the OE Ford 2V design. The heads feature fully CNC competition ported runners with a premium high resolution surface finish for maximum, all-out performance The exhaust runners are raised .100" from the stock location to improve the short turn radius and dramatically improve exhaust flow, and a revised oil return system improves oil drain back and includes provisions for mating with Ford 351W blocks. PowerPort Cleveland 225 cylinder heads fit Ford 351C, 351M, and 400M engines out of the box. With minor machining, the heads also fit Ford 302/351W blocks to create a "replica" Boss 302 or a 351 "Clevor" engine. The heads are available fully assembled or as bare castings. Sold individually.

5.0 out of 5 stars ( 6 )

Brodix Cylinder Heads Race-Rite Oval Port Cylinder Heads for Big Block Chevy

Brodix Cylinder Heads Race-Rite oval port cylinder heads for big block Chevys bolt on directly in place of your stock heads, so you can reuse your intake manifold and pistons. Because the stock exhaust ports are in the stock location, you don't have to worry about header or manifold interference. These aluminum heads are great for street and strip applications. They feature 119cc combustion chambers, air conditioner bracket holes, solid phosphorous bronze guides, high-torque 270cc intake ports, a fully machined valve cover rail, and bulletproof rocker stands.

4.36 out of 5 stars ( 25 )

Ford Performance Parts Super Cobra Jet Cylinder Heads

Ford Performance Parts teamed up with Jon Kaase to redesign their 429 Cobra Jet cylinder heads, and the results are these Super Cobra Jet heads. They feature revised valve angles and locations to reduce cylinder wall shrouding and improve flow, along with redesigned combustion chambers to accommodate the more centrally located valves. These heads use the same valves, valve springs, retainers, and 7/16 in. stud-mounted roller rockers as the current Ford Performance Parts 429 Cobra Jet heads, and the standard Cobra Jet intake and exhaust manifolds bolt right on. This new design offers a 25-50 HP increase over current Cobra Jet heads, depending upon displacement and camshaft.

4.62 out of 5 stars ( 13 )

Edelbrock E-210 Cylinder Heads

Step up to race-level performance with OEM compatibility using these Edelbrock E-Series E-210 aluminum cylinder heads. They feature larger runners for increased airflow, revised exhaust ports, and larger diameter springs for higher lift camshafts--perfect for spec series racers and large-displacement engines. Available bare or assembled, E-210 cylinder heads allow you to use off-the-shelf headers and hardware. Forget those overseas castings; go with quality, economy, and performance. Go with Edelbrock E-Series E-210 cylinder heads.

4.92 out of 5 stars ( 13 )

Edelbrock Rollin' Thunder Hydraulic Roller Cam, Lifter, and Pushrod Kits

Make some noise with one of these Edelbrock Rollin' Thunder hydraulic roller cam, lifter, and pushrod kits. They feature a hydraulic roller camshaft and improved hydraulic roller lifters that have more aggressive profiles than conventional cams without excessive valve overlap. They do this by testing and tuning them together on engine dynamometers for maximum performance. There's no guesswork about part compatibility with the Edelbrock Rollin' Thunder hydraulic roller cam and lifter kits, and you can be sure that all of the combinations will perform. Recommended for high performance street and strip use, the Edelbrock Rollin' Thunder hydraulic roller cam and lifter kits work best from 1,500 to 6,500 rpm and they maintain good vacuum at idle.

3.43 out of 5 stars ( 7 )

Edelbrock Performer Cylinder Heads

All Edelbrock aluminum cylinder heads feature threaded inserts in the rocker studs and exhaust manifold bolt holes for superior strength and durability. They also include hardened seats, bronze valve guides, and fully machined valve cover rails for a more consistent gasket seal. They offer improved power throughout the rpm range for greater throttle response and top-end horsepower. The intake and exhaust runners are CNC-machine profiled for superior flow and performance.

3.88 out of 5 stars ( 41 )

Trick Flow® Twisted Wedge® 11R 205 Cylinder Heads for Small Block Ford

Something great just got better! Trick Flow® used advanced 3D solid modeling and CAD tools (plus a couple decade's worth of racing experience) to turn its track-proven Twisted Wedge® design into the potent Twisted Wedge® 11R 205 head for serious performance enthusiasts and racers. Trick Flow® Twisted Wedge® 11R 205 heads are a direct replacement for previous Twisted Wedge® heads and work with all Twisted Wedge-specific pistons. New high velocity, race-inspired CNC Competition Ported runners have been optimized for today's popular bore and stroke combinations, and have a premium high resolution finish for ultimate performance. Modified 11 degree intake and 13 degree exhaust valve angles and a restructured, CNC-profiled combustion chamber arrangement provides more airflow and performance potential. Premium certified materials and components, along with the finest CNC tooling, are used to ensure uncompromising quality and durability, dimensional accuracy, and balanced flow from port-to-port. The fully machined castings are very strong and have a great-looking, billet-like appearance. Trick Flow® Twisted Wedge® 11R 205 cylinder heads are available fully assembled or as bare castings and sold individually.

5.0 out of 5 stars ( 7 )

Trick Flow® PowerPort® 320 Cylinder Heads for Big Block Chevrolet

Perfect for high performance street/strip, racing, and marine big block Chevy engines, Trick Flow® PowerPort® 320 cylinder heads deliver exceptional mid- to high-rpm performance. The Fast As Cast® rectangular runners flow almost as much air as fully CNC-ported heads right out of the box. That means you'll get CNC-ported performance for about the same price as regular cast heads. The fully CNC-profiled, heart-shaped combustion chambers have CNC bowl blended valve seat transitions to promote high velocity and huge airflow volume, plus 24 degree valve angles with 4 degree side cants to further increase airflow. Other features include premium, high-strength aluminum castings, extra-thick decks and walls for porting, and adjustable guideplates. Trick Flow® PowerPort® 320 cylinder heads are available fully assembled or as bare castings. Sold individually.

5.0 out of 5 stars ( 1 )

Chevrolet Performance Fast Burn Cylinder Heads

These CNC-machined aluminum Fast Burn cylinder heads from Chevrolet Performance are designed for 1958-2000 283-400 c.i.d. Chevy V8s. They quickly and completely burn the air/fuel mixture, ensuring higher cylinder pressure and more power. No additional porting is required--Chevrolet Performance Parts' cast-ported technology gives these heads maximum performance right out of the box. They're drilled and tapped for Vortec and raised port manifolds, they accept flange-mount or centerbolt-style valve covers, and will support in excess of 500 HP.

Not Yet Reviewed

Trick Flow® PowerPort® A460 340 Cylinder Heads for Ford 429/460

Trick Flow's potent PowerPort® A460 340 cylinder heads for Ford 429/460 are ideal for use in drag racing, monster trucks, tractor pulling, and other ultra-high power, large cubic inch engine combinations. Fast As Cast® runners precisely duplicate the port shape and profile of CNC-ported heads, delivering near-CNC-ported airflow, power, and performance for about the same price as regular cast cylinder heads. Other features include big block Chevrolet-style exhaust port openings and bolt pattern and your choice of standard or heavy duty 18-bolt mounting patterns. Trick Flow PowerPort A460 340 cylinder heads are available fully assembled or as bare castings. Sold individually.

Not Yet Reviewed