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These Severe Duty Gen II custom valves with unmatched strength and superiority are the only valves of their kind. Exhaust material XH-428 and intake material NK-844 are paired together for ultimate dominance over all others. With four times the tensile strength of competitors' intake valves and supremely better fatigue life, Manley Severe Duty Gen II custom valves truly show their commitment to seeing that you're there at the finish. You decide the head diameter and seat and margin widths, as well as valve length, groove type, and location for the perfect custom setup!
Not Yet Reviewed
$322.79
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$525.56
On Sale
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
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$413.03
$359.34
These COMP Cams Hi-Tech 210 degree pushrods were specifically designed for high-lift applications where pushrod and seat interference are problems at maximum lift. They're heat-treated to a minimum hardness of 60 on the Rockwell C scale, for the ultimate in strength. COMP Cams even gives them a black oxide finish and imprints the length and part number on them. In addition, they feature a 210 degree radius, rather than the standard 180 degree radius, so they'll work great with rocker arms that feature cup-type adjusters and applications requiring more load-bearing surface from the pushrod. If you are building a high-horsepower, high-rpm, high-lift camshaft engine, then you need to use these COMP Cams Hi-Tech 210 degree pushrods for maximum reliability.
( 7 )
$271.95
Summit Bucks
Great cylinder-head airflow has been a key enabler of the LS-Series exceptional performance. ACDelco GM Genuine Parts cylinder heads deliver those power building attributes to you with a range of production-style aluminum heads. GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors. From the LS6 heads for smaller-displacement engines to LS7 style heads for 427-inch-and-larger combinations, these aluminum cylinder heads benefit from Chevrolet Performance's extensive research and development program, providing maximum airflow. Many assembled heads use premium machining and materials, including CNC finishing and porting, along with lightweight, hollow-stem valves, sodium-filled exhaust valves, and on some heads lightweight titanium intake valves.
Not Yet Reviewed
$424.99
AFR 195cc SBC Enforcer Cylinder heads feature their Permanent Mold "As-Cast" Technology surfaces on the intake runners, exhaust runners and combustion chambers that allows for extremely accurate and repeatable port location/performance. These budget-friendly heads are perfect for your 350 to 400 cu. in. operating below 6,000 rpm. They come fully assembled with the identical components found in their higher end CNC-ported cylinder heads, such as ARP rockers studs, PAC Racing springs, Viton® valve seals, AFR adjustable guide plates, machined bead valve locks, hardened spring cups and ductile iron seats, and their one piece 8mm 21 4N stainless steel valves. The AFR 195cc SBC Enforcer cylinder heads are available in straight or angle plug, assembled or bare.
( 22 )
$434.70
On Sale
GFB offers a range of high-flowing external wastegates that are small—the most compact size in their class—but are big on flow! These external wastegates are built to cope with the extreme conditions and the harsh environment that's associated with high-boost and exhaust temperatures. Key features include: * Most compact wastegate range on the market for easy installation in tight locations * Body, valve, seat and all mounting hardware is CNC-machined from high-temp stainless steel * Actuator housing CNC-machined from billet 6061 aluminum * Nomex-reinforced silicone diaphragm * Internal shroud protects valve stem from excessive heat and prevents carbon-related sticking * V-band clamp mounting system * Made in Australia under ISO 9001
Not Yet Reviewed
$405.00
$364.50
FLOTEK 185cc Small Block Ford Thumper cylinders heads feature a raised "floor" and "roof" design. Why you ask? This allows a better approach to the valve when attempting to achieve high performance and to keep air and fuel attached to short turn radius for increased torque over a wider rpm range without sacrificing high-rpm power. Coupled with the new chamber design for better wet flow quality and a "W" design exhaust port to keep flow attached to the port floor which greatly increases exhaust gas evacuation verses original 180cc design. Always thinking of the racer, the FLOTEK Thumper 180 accepts stock manifold!
( 4 )
$359.00
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$489.00
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.
( 42 )
$258.99
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$586.99
FLOTEK 320cc big block Chevy cylinder heads are a powerful addition to your build right out of the box! They feature a thick deck design and high-capacity water jackets, making them a reliable option for street or strip applications. The heads can be used with stock pistons and feature raised valve cover rails (exhaust port location is raised 0.500 in.). FLOTEK 320cc BBC cylinder heads are a great choice for adding horsepower! Models are available assembled or bare for a variety of engine applications. NOTE: This item is not sold as a pair; this is a single cylinder head.
Not Yet Reviewed
$499.00
On Sale
Summit Racing™ Pro LS T6 single and twin turbo cams have increased overlap from the standard turbo cams to take advantage of the better turbine housing flow. As a result, these cams will increase RPM and work with larger cubic inches better in race applications where an open front exit exhaust is utilized.
Not Yet Reviewed
$349.99
$299.99
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$349.99
FLOTEK 180cc small block Chevy cylinder heads are economically priced, out-of-the-box-ready bolt-ons. They include state-of-the-art aluminum casting, 180cc intake ports that are specifically designed for outstanding versatility, and 64cc combustion chambers. Among their standard features: aluminum alloy construction, phosphorous bronze valve guides, high-nickel valve seats—plus ends milled and drilled for accessories, as well as straight or angle spark plugs. Besides the assembled options, these cylinder heads are also offered bare. When choosing the right heads, it's quality, performance, and price that matter most. FLOTEK 180cc Chevy small block heads deliver on all three! NOTE: This item is not sold as a pair; this is a single cylinder head.
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$479.00
FLOTEK's 200cc small block as-cast ported chamber cylinder heads feature design by Jones Engineering, with 23-degree runners making impressive horsepower. Their power is ideal for street-strip usage and will post exceptional flow numbers right out of the box. The heads are available assembled or bare. Order the model with options recommended for your engine application. FLOTEK 200cc small block Chevy cylinder heads deliver the performance you're looking for! Notes, features and benefits: * This item is not sold as a pair; this is a single cylinder head * Versatile 200cc intake ports * 64cc combustion chamber * Phosphorous bronze valve guides * High-nickel valve seats * Ends already milled and drilled for accessories * Offered in solid or hydraulic cam design
( 18 )
$489.00
On Sale
Scorpion Endurance Series rocker arms offer you power that perseveres. With less weight and a lower profile these Endurance rocker arms are built with the stamina to get the job done in winning style. Scorpion specifically designed these rocker arms for endurance racing engines with better fitment and they can easily handle up to 750 lbs. of open spring pressure. Plus, they're approximately 28 grams lighter than their Race rockers! Endurance rocker arms are micro-polished to endure over a long period and are anodized for additional protection, as well as providing great aesthetics. Choose your ratio and gain the stamina to sting your competition with Scorpion Endurance Series rocker arms. Additional features include: * Aerospace-grade 7000 Series aluminum * Full body design * Precision ground need bearings * Centerless-ground fulcrum * Ground pin and roller * Burr-free trunnion through hole * Large machined seat * Solid steel pedestals * Black oxide coated steel parts
( 33 )
$482.85
$420.08
Famous factory camshafts of the past are combined with the latest advanced camshaft technology to give you the sound and excitement of the musclecar era. COMP Cams Nostalgia Plus cam and lifter kits are specifically designed to capture the essence of the original '60s musclecar with additional power that you can feel in the seat of your pants. The new technology creates awesome response to give new life to any hot rod.
( 38 )
$439.95
As with all other areas in the valvetrain, the area where the spring sits also takes a beating. The old standard shims and/or seats simply will not hold up to the extreme pressures and high rpm found in today's performance engines. COMP Cams valve spring locators solve this problem and eliminate failures.
( 75 )
$430.95
On Sale
Think you have to scour the local bone yards to find a decent set of GM's old double hump or fuelie cylinder head castings? Not true. In fact, we've brought back classic Chevy performance in a big way with these ready-to-run heads for small block Chevy. Our versions of the popular GM cylinder heads offer great performance for less than it would cost to rebuild an old set of double hump castings.
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$649.99
$499.99
FLOTEK 180cc small block Ford cylinder heads feature as-cast ports, up to 0.550 in. lift, and are designed for entry-level street performance applications operating in the idle-to-5500 rpm range. They come fully assembled and ready for a bolt-in installation; bare models are also available. Replace your stock heads with high performance FLOTEK 180cc small block Ford cylinder heads. Order the model recommended for your engine application. Additional notes: * This item is not sold as a pair; this is a single cylinder head * Available for 289, 302, and 351W engines * Will not accept stock pushrods * Thermactor plugs (EGR) not included (Trick Flow® small block Ford thermactor inserts recommended) * PAC, Manley, Comp Cam springs, and custom builds available
( 19 )
$494.00
On Sale
Deliver power-building airflow to your engine with Summit Racing™ Vortec cast iron cylinder heads. These heads outflow the early model small Chevy heads with wide-open intake runners, efficient combustion chambers, and a high-performance valve job. They are made from a strong cast iron alloy that makes them less brittle than comparable Vortec heads on the market. For performance and great value, select the Summit Racing™ Vortec cast iron cylinder heads preferred for your build.
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$649.99
$499.99
Summit Racing™ Pro LS Automotive cams are affordable and designed in stages with very specific cam timing for each individual application in cathedral and rectangle port versions. This ensures maximum performance and gives you the idle you are looking for. The lobes are designed for stability at high rpm with the spring pressures found in quality .600 and .670 in. spring packs. Careful design guarantees the cams can be installed with minimal difficulty. Although piston to valve clearance should always be verified, the Stage 2 and 3 cams often allow for additional cylinder head milling. The Stage 4 cams often require no changes but can be degreed slightly different as needed. Starting with American bearing steel, they are precision machined on a Landis 3LB CNC grinder with CBN diamond wheels for unmatched quality.
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$349.99
On Sale
Summit Racing™ Pro LS camshaft and spring kits are designed for GM LS engines. Each cam kit offers a budget-friendly option without sacrificing quality and performance. They're available in Stage 1 or 2 performance configurations. Stage 1 kits include the cam and matching drop in beehive springs with seals or optional upgraded dual spring and retainer kit. Stage 2 kits give you an additional cam change gasket kit and a crank bolt. Order the Summit Racing™ Pro LS camshaft kit recommended for your year/make and engine application.
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$584.96
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$608.98
$534.96
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$558.98
On Sale
You won't find a better quality cam for your LS-based engine than our Summit Racing™ Pro LS series of cams. These convenient combo kits enable you to get the cam along with the correct matching lifters. Pro LS cam, lifters, and trays are included in one easy-to-order part number. Whether for street/strip, turbocharged, or racing use, you'll find the kit recommended for your year/make and engine application.
( 4 )
$580.10
$541.97
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