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PAC Racing RPM Series valve springs were developed using all of the latest advancements from Circle Track and drag racing successes. This valuable, real-life research has been applied to new designs, which allow for performance increases that exceed all demands. RPM springs are made from quality materials and are available in different diameters and pressures to suit your specific camshaft profile.
( 8 )
$895.71
Simplify your valvetrain assembly! COMP Cams high performance valve spring kits have everything that you need for a complete valve spring assembly. Springs and retainers are included, along with complete instructions for a worry-free installation.
( 32 )
$801.95
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$1,003.95
These Manley NexTek valve springs are better-designed valve springs using state-of-the-art machinery for purpose-built racing engines. They're manufactured from super-clean, high-tensile chrome silicon steel and are shot-peened to MIL specs for maximum fatigue life. They feature a proprietary, multi-step heat-treating that minimizes load loss and have computer-aided modeling to minimize valve bounce and valve gear separation. The Manley NexTek valve springs are smaller diameter and lightweight, allowing engines to rev higher faster. They have an extended tip thickness designed to eliminate overload breakage, and their tightly controlled open-end flatness reduces valve stem side loading.
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$789.80
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$999.69
BTR Platinum valve spring kits are dual-spring kits, highly recommended when upgrading to an aftermarket camshaft. Each assembly was created to fill the need for high performance—and comes with quality dual-valve springs, titanium or chromoly retainers, locks, seals, and locators for stock or bronze guides. Build a better high performance cam with BTR valve spring kits! Order the material and stem seal color you prefer, and the model recommended for use with your engine application.
( 16 )
$999.99
Valve springs are one of the most critical and overlooked components in your engine. They must be matched to your cam in order for the engine to reach its full potential. It does absolutely no good to install a cam that will perform up to 8,000 rpm if you do not have the correct springs. Use the only valve springs that will give the recommended spring pressure with the valve both on the seat and at maximum lift. COMP Cams valve springs are offered in single and dual styles to meet your cam requirements.
( 273 )
$823.95
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$1,029.03
Lingenfelter Performance Engineering LSX valve springs are premium single beehive-style valve springs. They are offered in sets of 16 and can be used with stock LS valve spring retainers.
Not Yet Reviewed
$807.45
These Howards Cams LS dual valve springs are specifically designed for GM Gen III LS1, LS2, and LS6 performance applications. They feature high-tech winding, heat-treating, and finishing processes to make them the ultimate late model performance springs.
( 1 )
$804.99
Summit Racing™ camshaft and spring kit Pro Packs have been put together to cut down on costs and save you precious time. They include a new camshaft, springs, retainers, and assembly lube. The Summit Racing™ camshaft and spring kit Pro Packs are available with a variety of different camshaft profiles, so you can choose which one is best for your engine combination.
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$863.85
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$910.85
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.
( 37 )
$766.95
Kibblewhite has developed these high performance turbo racing valve springs for the performance enthusiast. The folks at Kibblewhite have years of experience building the finest valvetrain products, and that experience has culminated in these turbo racing valve springs. Each spring starts life as the finest quality super-clean, chrome-silicon wire that is wound to the most exacting standards. After the spring is wound, it goes through a rigidly controlled heat-treatment, stress-relief, and shot-peening process that ensures the longest-lasting and strongest springs possible. These springs are perfect for high performance motors that consistently see high revs and abuse. Upgrade to these Kibblewhite high performance turbo racing valve spring kits today to realize your performance machine's true potential.
Not Yet Reviewed
$834.80
AFR's 335cc BBC Enforcer cylinder heads feature their Permanent Mold "As-Cast" Technology surfaces on the intake runners, exhaust runners, and combustion chambers that allow for extremely accurate and repeatable port location/performance. These budget-friendly heads are perfect for your 509 to 540 cu.in. operating below 6,500 rpm. They come fully assembled with the identical components found in AFR's 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 (not stamped), hardened spring seats, and AFR's one-piece 8mm 21 4N stainless steel valves. Order the cylinder heads recommended for your year/make and engine application.
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$1,023.75
No longer will fans of the small block Chevy have to choose between vintage looks or modern cylinder head power—Trick Flow® DHC™ 175 cylinder heads give you both! Made from premium grade, lightweight A356-T61 aluminum, DHC™ 175 heads feature the exterior styling and straight spark plug holes that deliver the nostalgic appearance of the original factory performance 186, 291,461,462 "double hump" or "camel back" castings that customers want. To keep with the vintage design, the heads are available with 69' later or without 68' earlier accessory bolt holes cast into them. 60cc CNC-profiled combustion chambers combined with a state of the art valve job and CNC blended bowl work under the valves and small cross-section intake runners promote low-rpm torque increases and boost high-rpm horsepower. The runners are finished with Trick Flow's® superior Fast As Cast® process that precisely duplicates the runner profile and performance levels of fully CNC-ported heads without the added machining cost. Ductile iron valve seats for use with unleaded fuel, stainless steel valves, bronze alloy valve guides, multi-angle valve seat machining, and decks and walls cast extra thick for increased casting strength and to provide extra room for porting round out the features. Trick Flow® DHC™ 175 cylinder heads are available fully assembled or as bare castings. Sold individually.
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$849.99
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$874.99
Trick Flow® Super 23® 175 cylinder heads deliver performance that far exceeds the power capabilities of factory heads on 283-350 c.i.d. small block Chevy engines. It starts with the small cross section Fast as Cast® runners. They promote excellent port velocity for increased low end torque and have a profile that provides excellent flow for making high RPM horsepower on small bore engines. Modern CNC-profiled chambers promote combustion efficiency to maximize power with less ignition timing, reducing the potential for detonation. The result is more power and torque, better drivability, and greater throttle response from your street performance engine. The features don't end there. Trick Flow® Super 23® 175 cylinder heads have improved A356-T61 castings with 3/4" thick decks for added strength and durability. They also have a competition multi-angle valve job, angled spark plugs, and raised valve cover rails for improved rocker clearance and less potential for oil leaks. Heads are available assembled with premium components including stainless steel valves, bronze guides, 7° machined locks, chromoly retainers, and your choice of PAC Racing valve springs for flat tappet or hydraulic roller cams. Trick Flow® Super 23® 175 heads accept most original accessories. They are emissions-legal under CARB E.O. #D-747-1 for 1995 and earlier GM vehicles with Chevy 262–350 engines. Cylinder heads are available fully assembled or as bare castings. Sold individually.
( 1 )
$899.99
Trick Flow® Super 23® 215 cylinder heads give a huge performance boost to race-ready small block Chevy engines. Based on the proven Super 23® head design, the heads feature large, 215cc intake runners for more airflow in the mid and upper RPM range. Fast As Cast® ports deliver near-CNC-ported flow and performance for about the same price as regular cast heads—that means more power for less. Other features include angled spark plugs, raised valve cover rails, and extra-thick decks and walls for custom porting jobs. You can get Super 23® 215 heads with two valve spring packages for different camshaft types and power levels. The standard 453 lb. valve springs are perfect for most hydraulic roller cams. For more aggressive solid roller cam profiles, choose the optional 550 lb. valve springs for proper control at high RPMs. Cylinder heads are available fully assembled or as bare castings. Sold individually.
( 1 )
$1,054.99
Trick Flow® Super 23® 195 cylinder heads give you performance that closely matches CNC-ported cylinder heads—for about the same price as ordinary cast heads! Ideal for 302 to 406 c.i.d. engines, the Super 23® 195 heads feature high-velocity, small cross-section intake runners to promote low-rpm torque and high-rpm horsepower. Fast As Cast® runners deliver near-CNC-ported flow and performance. Angled spark plugs, raised valve cover rails, and extra-thick decks and walls for porting round-out the features. Trick Flow Super 23 195 heads are a direct fit, high performance replacement for factory heads and accept most original accessories. They are emissions-legal under CARB E.O. #D-747-1 for 1995 and earlier GM vehicles with Chevy 262-350 engines. The heads are available fully assembled or as bare castings. Sold individually.
Not Yet Reviewed
$874.99
Moroso billet aluminum valve covers are CNC-machined from a billet aluminum bar to make them lightweight without sacrificing strength. Their airtight sealing allows the engine to pull greater vacuum for improved ring seal and power. The covers are available plain or with the Moroso logo, natural or black anodized—and mount with either a centerbolt or perimeter bolts. Order the pair designed for fitment with your vehicle and engine application.
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$879.99
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!
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$899.99
AFR 210cc LS1/LS2/LS6 Enforcer cylinder heads are available in standard and small bore applications. They feature Permanent Mold "As-Cast" Technology surfaces on the intake runners, exhaust runners, and combustion chambers that allow for extremely accurate and repeatable port location/performance. The budget-friendly heads are perfect for your OEM engine operating below 6,300 rpm. Fully assembled Enforcer models include the identical components found in AFR's higher end CNC-ported cylinder heads—such as PAC Racing springs, Viton® valve seals, machined bead valve locks (not stamped), hardened spring seats, and one-piece 8mm 21 4N stainless steel valves. The heads are available without any parts for the DIY. Sold as a single piece, two heads are required per engine.
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$780.15
Fit any LS engine with Chevrolet Performance LS3 cylinder heads. Manufactured from aluminum alloy, these GM stock replacement heads are assembled with intake and exhaust valves, stem seals, retainers, springs, and locks. Great cylinder head airflow has always supplied the LS Series with exceptional performance. Retain that performance and save yourself time and worry by replacing your tired cylinder heads with Chevrolet Performance LS3 cylinder heads.
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$1,069.03
PRW Pro Series shaft-mount rocker arm kits are comprised of components from the finest manufacturers in the world. CNC machined billet steel pedestals, ground steel alloy rocker shafts, PRW alloy steel fasteners, and studs and bolts are included in the complete kits for a professional install. Each rocker body is relieved for extra valve spring clearance and anodized for added strength. Choose the kit designed for your vehicle.
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$775.05
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$918.18
Don't trust your engine investment to just any no-name rocker manufacturer. Harland Sharp heavy-duty roller rockers are specifically designed for the heavy spring pressure and high-lift geometry of highly modified engines. They're also engineered with wider bodies, resulting in increased rocker strength and longevity. So, when your engine requires extra durability, use Harland Sharp heavy-duty roller rockers.
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$858.99
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$1,037.99
Originally introduced in 1987, the latest versions of these Sportsman II heads from World Products continue to be the industry's most popular cast iron cylinder heads. Features include high-flow 200cc RightCast intake runners, Fast-Burn combustion chambers, and your choice of angled or straight spark plug locations. The ports are extra-thick with plenty of room for porting, and the heads are indexed off the chambers to ensure perfect alignment with the cylinders. Other features include universal end pads that'll accept all early and late model accessories, leak-free machined valve cover rails, and the ability to accept both perimeter and center bolt style valve covers. They are available in bare or complete assemblies with stainless steel valves, valve springs, retainers, locks, umbrella-style valve seals, screw-in studs, and pushrod guideplates.
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$948.99
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$994.84
These proven rollerized rockers from Crower are made from 17-4PH stainless steel with 1025 heat treating. They feature premium oversized needle bearings, sure-lock rocker nuts, and alloy steel tip rollers. Their superior, lightweight body design provides plenty of clearance for large-diameter springs.
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$975.99
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$1,057.99
Briggs & Stratton Junior 206 crate engines are made tough! Each engine is hand-assembled in-house using tooling and dies specifically made for racing--for unparalleled repeatability. The factory-sealed long blocks include a ground cam and controlled piston pop-up (reducing compression variance). They're a simplified IKF/WKA rule set designed to maintain a stock configuration, right down to the factory carburetor jets. These 206 race engines are powerhouses! Briggs & Stratton Junior 206 race-only crate engine specs and features: * Primary use: for karting, high school/collegiate Supermileage Competitions * Reinforced, cast iron sleeved, dual ball bearing racing cylinder * Single cast, custom aluminum alloy cylinder head with high-flow intake port, custom seat/guide material * Squeeze cast, T-7 heat-treated aluminum rod with reinforced I-beam * Carbon steel crankshaft with induction-hardened, micro-polished, crankpin-reinforced timing gear * Cam ground, barrel faced, eutectic alloy piston with 3-piece ring set with chrome faced top ring * .255 max. lift ground cam with nitrited lobes and built-in mechanical compression release * High-silicon, racing-engineered valve springs for seasons of racing * High-grade stainless steel, dished valves with nitrited exhaust * 3-piece, automotive-style keepers and reinforced rocker arm and lock ball * PVL digital ignition with built-in 4,100 rpm rev limiter * PVL steel hub, cast aluminum flywheel * Briggs & Stratton tooled 22mm round slide, fully adjustable jet carburetor * Custom graph oil composition head gasket * Max Torque clutch, driver, and installation kit * Green premium air filter * Carburetor locking cap
( 1 )
$759.00
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