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90 Results Found For "Spring"

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Results 1 - 24 of 90

Quicksilver Circle Track Valve Springs

Quicksilver Circle Track engines are designed to deliver torque and reliability, and they offer parts and components to keep your engine winning races and championships. Quicksilver Circle Track valve springs ensure valves close properly and at the right time, maintaining proper engine performance. These valve spring kits include retainers and locks.

Not Yet Reviewed

$1,618.99

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 )

$1,549.99

$1,599.99

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 )

$1,549.99

$1,649.99

Trick Flow® GenX® 260 Cylinder Heads for GM LS7

Trick Flow® GenX® 260 square port cylinder heads for GM LS7 are the best choice for your LS-based performance build for several reasons. The A356-T6 aluminum castings feature more material for increased rigidity and strength. Factory LS7 port locations, valve angles, and valve locations have been maintained to work with existing intakes and pistons. One-piece modular, 2024-T4 billet aluminum rocker arm mounts enhance valvetrain stability and are removable for shaft rocker setups. High flow, high velocity CNC Competition Ported runners with the premium high resolution surface finish provide all-out air flow and performance throughout the entire powerband. Plus there's clearance for 3/8" pushrods and through-deck coolant holes that fit all GM LS gasket and block combinations, Trick-Alloy™ powdered metal valve guides, and solid stem valves. Fully assembled heads also include Trick Flow® by PAC Racing Pacaloy valve springs, steel or titanium spring retainers, die forged steel valve locks, and stainless steel valves. Trick Flow® GenX® 260 cylinder heads are emissions-legal under CARB E.O. D-747 for 2006 to present GM vehicles with 7.0L engines. They are available fully assembled or as bare castings and sold individually.

3.0 out of 5 stars ( 2 )

$1,549.99

$1,599.99

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.

4.86 out of 5 stars ( 29 )

$1,549.99

Trick Flow® PowerPort® 290 Cylinder Heads for Ford 429/460

Trick Flow PowerPort® 290 cylinder heads for Ford 429/460 engines deliver significant horsepower and torque gains over similar-style cylinder heads. The heads have Fast As Cast® runners that duplicate the port shape and profile of CNC-ported heads for near-CNC-ported power and performance for about the same price as regular cast cylinder heads. Other features include an extremely efficient chamber design for more complete combustion and exhaust ports raised .270" from stock for increased airflow, Trick Flow PowerPort 290 cylinder heads are available fully assembled or as bare castings. Sold individually.

Not Yet Reviewed

$1,599.99

Trick Flow® Super 23® 230 Cylinder Heads for Small Block Chevrolet

When it comes to high power 23 degree cylinder heads for small block Chevy engines, you can't do any better than Trick Flow Super 23® 230 heads. They are so good because they are the closest thing you can get to 18 degree cylinder head performance in a 23 degree design! Plus, the Super 23 230 heads use all standard small block valvetrain parts and headers saving you time and money when swapping heads. Super 23 230 heads come standard with Trick Flow's advanced CNC Competition Ported runner design that features fully CNC-profiled combustion chambers and runners with a premium high resolution surface finish for maximum flow and performance. Additional highlights include angled spark plugs, extra-thick decks and walls for porting, and raised valve cover rails. Cylinder heads are available fully assembled or as bare castings. Sold individually.

Not Yet Reviewed

$1,524.99

COMP Cams HRT Max Power Master Camshaft Kits

COMP Cams HRT Max Power Master camshaft kits take the guesswork out of choosing the right valvetrain-upgrade package to achieve your desired performance with your Dodge Gen III Hemi. These Max Power kits feature the "low shock technology" of COMP's HRT camshafts with lobe profiles designed to maximize horsepower and improve stability at higher rpms. The profiles are also easier on valve springs, enhancing durability and reducing load loss. By dyno testing with many combinations of valvetrain components, COMP Cams' engineers have created these more complete, perfectly matched engine camshaft packages for your Hemi application in three different stages of performance. COMP HRT Max Power MK-kits include: * HRT Cam * Lifters * Pushrods * Conical or Beehive springs * Steel retainers * Locks * Spring seats * Valve seals * Phase limiter (VVT Hemi kits only)

4.75 out of 5 stars ( 4 )

$1,644.95

$1,839.95

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

$1,524.99

Trick Flow® GenX® 280 Cylinder Heads for GM LS3

Building on the features that make the GenX® 255 for GM LS3 great—like 12° valve angles and relocated valves for reduced valve shrouding and improved piston-to-valve clearance—Trick Flow's GenX® 280 HIP cylinder heads withstand the abuse of high horsepower, power-adder performance demanded by today's racers and engine builders. The GenX® 280 heads list of features is long, and it starts with the HIP'd (Hot Isostatic Pressed) castings. This process significantly increases the casting's density for improved tensile and fatigue strength. It continues with industry leading airflow through CNC Competition Ported 280cc intake ports and Trick-Alloy™ powdered metal valve guides for added longevity. Manley Severe Duty intake valves and Extreme Duty Inconel exhaust valves are designed to withstand the abuse of extreme temperatures and stresses of big power adder applications. Trick Flow® by PAC Racing dual valve springs, titanium retainers, .750-inch thick deck, and 6-bolt-per-cylinder mounting pattern round out the features. Trick Flow® GenX® 280 HIP cylinder heads for GM LS3 work with all LS3 intake manifolds and LS9/LSA blower assemblies and fit all LS head gasket and engine block combinations. These cylinder heads are available fully assembled or as bare castings. Sold individually. Key features: * 280cc intake ports and 67cc combustion chambers * HIP'd casting * Accepts 3/8 in. pushrods * Powdered metal valve guides * 2.165 in. NK-844 severe duty stainless steel intake valves * 1.600 in. XH-432 extreme duty Inconel exhaust valves * .750 in. thick deck * 6-bolt configuration * Assembled heads include a Trick Flow® LS3 rocker stand

Not Yet Reviewed

$1,949.99

On Sale

Summit Racing™ Gen III Hemi MDS Delete Kits

Wanting to deactivate the Multi-Displacement System of your Hemi vehicle will require a few things, including a non-MDS camshaft and components. Summit Racing™ Gen III Hemi MDS delete kits are offered in versions designed for engines with or without Variable Valve Timing (VVT). They contain premium components (except programmer) to help you complete the job. Each Summit Racing™ delete kit will include a head gasket set, timing cover gasket, non-MDS lifters, replacement cylinder head fasteners, non-MDS solenoid plug, and camshaft, along with valve springs and/or camshaft phaser limiters. Choose the combo designed for your vehicle.

Not Yet Reviewed

$1,576.80

$1,726.79

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 )

$1,772.99

$1,821.99

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.

4.26 out of 5 stars ( 23 )

$1,535.00

$1,765.00

March Performance Chevy LS Series Serpentine Kits

March Performance Chevy LS Series serpentine kits offer an exciting new look when mounting an accessory drive in your vehicle. They're designed for vehicles that do not have air conditioning. The driver side features a remote power steering pump with an attractive aluminum cover, while the passenger side has March's own billet alternator (except where noted). An OEM-style tensioner ensures perfect belt tension. All pulleys and brackets are CNC-machined from 6061-T6 aluminum for strength and perfect fit—and hard-coated on high wear areas for durability. Order the kit recommended for your vehicle. LS Series kits include: * Aluminum water pump * March billet alternator (except where noted) * Alternator pulley with fan * Water pump pulley with nose cover * Alternator bracket * Polished spring-loaded belt tensioner with cover * Crank pulley (required adapter sold separately) * Mounting hardware Kits with power steering include: * Type 2 remote power steering pump * Billet pump case * Power steering pulley with nose cover * Mounting hardware

5.0 out of 5 stars ( 1 )

$1,694.99

Trick Flow® PowerPort® 175 Cylinder Heads for Ford 390-428

Give your Ford 390-428 more get-up-and-go with Trick Flow PowerPort® 175 cylinder heads. A direct bolt-on for all 1961-76 FE engines, the heads are made from top-quality A356-T61 aluminum so they're much lighter but still as strong as OE castings. Specially optimized intake runners increase airflow velocity, and Trick Flow's extraordinary CNC Street Ported treatment guarantees proper dimensional accuracy and balance between the runners. Other performance improvements of the PowerPort175® heads include bronze alloy valve guides, ductile iron valve seats, and multi-angle valve seat machining on SerdiR equipment. Assembled cylinder heads include premium 11/32 in. stainless steel valves, Trick Flow® by PAC Racing valve springs, 7 or 10 degree steel valve stem locks, and chromoly or titanium retainer options. The heads are available fully assembled or as bare castings. Sold individually.

4.89 out of 5 stars ( 9 )

$1,524.99

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 ( 112 )

$1,626.95

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 )

$1,654.95

Vintage Air Ford Front Runner Engine Drive Systems

Vintage Air offers their totally cool Front Runner engine drive systems for your small block Ford! With a unique design focused on performance, Vintage Air Ford systems are strong, compact, and extremely good looking. They feature a patented, one-piece, forged aluminum timing cover with integral accessory mounts and utilize a spring-loaded tensioning system for no-nonsense, trouble-free operation. Systems are available for power steering with or without pump and non-power steering applications in your choice of bright or black hard coat finishes. Vintage Air Ford Front Runner engine drive systems may include: * ARP stainless 12-point bolt and hardware * 170 amp alternator * Dayco OEM tensioner * Timing cover gasket set * Dayco serpentine drive belt * Power steering pump * 4-bolt crankshaft pulley * High performance water pump * Water pump pulley * Power steering pump pulley

4.73 out of 5 stars ( 11 )

$1,639.99

Ford Performance Parts Camshafts

Ford Performance Parts guys live, eat, and sleep Ford. Their camshafts are designed for everything from mildly modified street rods to full-out drag racers. All Ford Performance Parts camshafts are designed for more power; with either improved low-to-mid rpm torque, or mid-to-high rpm horsepower. They're available in many different durations and valve lifts, in your choice of hydraulic, solid, or hydraulic roller lifter configurations. Depending on application, features may include: * More lift and duration * Available to work with stock pistons * No valve spring change required for some applications * Offered in grinds that provide noticeable power improvements with a lumpy idle while maintaining good drivability with manual transmissions * Also available as true street-strip camshafts that work best with manual transmissions or higher stall speed torque converters and high numerical rear-end gears * Offered in versions that work well with carburetors or mass air fuel injection

4.89 out of 5 stars ( 80 )

$1,694.99

Edelbrock E-205 Cylinder Heads

You're taking a step up in performance with Edelbrock E-205 small block Ford cylinder heads. Featuring larger runners for increased airflow, revised exhaust ports, and larger diameter springs for higher lift camshafts, Edelbrock E-205 cylinder heads are ideal for spec series racers and larger displacement engines. They are able to support the power that you need to compete--more than 500 naturally aspirated horsepower and even more in forced induction applications! Get race-level performance with OEM compatibility when you bolt on a pair of Edelbrock E-205 cylinder heads.

3.5 out of 5 stars ( 2 )

$1,687.95

$1,838.95

Holley Ford 7.3L Godzilla High-Mount Accessory Drive Base Kits

Holley's Ford 7.3L Godzilla high-mount accessory drive base kits with their patent-pending technology, integrates timing cover, oil pump, oil pan, water pump, alternator, and the option for A/C and/or P/S, all in one streamlined system. Plus, they are compatible with both factory crank pulleys and aftermarket damper/pulleys. Positioning an engine swap correctly is crucial, ensuring it aligns with the vehicle's original engine's crankshaft centerline. Holley's innovative solution achieves just that, allowing proper engine placement while providing clearance for a stock Fox Body hood (when used with a low-profile intake). Our system replaces Ford's sump-mounted oil pump with a high-capacity gerotor pump positioned behind the timing cover, gaining crucial crossmember and ground clearance. To ensure reliability, they incorporated a proven pump design utilizing Melling sourced components that mimics the factory pressure level. Unlike most pumps that require removing the oil pan to change the pressure spring, Holley introduced a first-of-its-kind external access port, allowing hassle-free spring switching. Moreover, their cast aluminum oil pan features a performance-minded windage tray and baffle, guaranteeing proper oil pickup during high-G maneuvers. For extreme situations, such as drag racing, upgrade to the optional race baffle to always ensure proper oil delivery. These accessory drive systems offer flexible configuration options to meet various needs, making Holley's Godzilla high-mount accessory drive kits the ultimate solutions for engine swaps, offering unparalleled functionality, adaptability, and ease of installation. Choose from natural as-cast aluminum or black finish.

Not Yet Reviewed

$1,549.95

Summit Racing™ Precision Cast Cylinder Head

Summit Racing™ precision cast cylinder heads are made from tough A-356 aluminum alloy and feature Permanent Mold "As-Cast" technology. Port accuracy is unrivaled--meaning CNC porting is not required to provide superior flow. The result is CNC-ported performance at a fraction of the price! We start with precision CNC-finished faces and bolt holes for accuracy and fitment. American craftsmen expertly size and install the manganese bronze valve guides and interlocking ductile iron seats before finishing with a competition-grade valve job. From there, the decks are given a final pass for superior finish. They are finish-assembled in the USA with top-quality components like PAC Racing springs, fasteners, one-piece 21 4N stainless valves, machined locks, Viton® seals and chromoly steel retainers. The final result is the performance you want and Summit Racing™ quality you TRUST!

4.55 out of 5 stars ( 11 )

$1,539.99

$1,999.99

COMP Cams Thumpr NSR Ford Coyote 5.0 Modular 4V Camshafts

COMP Cams Thumpr NSR Ford Coyote 5.0 modular 4V camshafts present big power gains, along with the distinctive Thumpr idle lope—and you don't need to upgrade the valve springs. Ford 5.0L modular 4-valve V8 engines have become hugely popular, so how do you improve upon already great performance? With a camshaft from the COMP Cams family of Thumpr NSR camshafts! Choose the cam model (Thumpr or Mutha' Thumpr) designed for your vehicle and engine application. Features include: * Brings legendary Thumpr sound to the 5.0 Coyote * Optimized lobe profiles for increased airflow and exhaust efficiency * Big performance gains in mid- to upper-rpm range * Valve spring upgrade not required * One-piece billet steel construction * Compatible with N/A and supercharged applications

Not Yet Reviewed

$1,952.95

$2,046.95

PROMAXX Performance Shocker Series Small Block Chevy Cylinder Heads

PROMAXX Performance Shocker Series small block Chevy cylinder heads are as good as it gets for 23-degree performance heads. They feature ultra-smooth 356-T56 aluminum casting, and professionally designed runners and chambers that are meticulously CNC-ported. These heads flow over 325 cfm to easily support 725-plus horsepower. Shock the competition without breaking the bank by ordering a pair of PROMAXX Performance Shocker Series small block Chevy cylinder heads. They're available assembled and bare. Order the model with options recommended for your year/make and engine application. Features, items, and specs: * 225cc fully-ported intake runners * 5-angle valve job * Angle or straight plug * Diamond-honed guides * Large spring pockets * Multiple spring options * Assemblies include 21-4N one-piece swirl-polished back-cut valves, studs, and guide plates

1.0 out of 5 stars ( 1 )

$2,020.00

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