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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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If you need the world's finest high performance street/strip small block Ford heads, then check out AFR's 185cc emissions-legal Renegade Street cylinder heads (CARB E.O. #250-3). With lightweight 8mm, 2.020 in. intake valves and 1.600 in. exhaust valves, combustion chamber volumes of 58 or 72cc, and 68cc exhaust ports, AFR's 185cc Ford cylinder heads are designed for 302-351 c.i.d. engines operating from 1,500 to 6,500 rpm. A 3/4 in. thick head deck makes the AFR heads ideal for nitrous or blower applications. These heads will not accept rail rocker arms, and hardened push rods are required on models designed for stud mount rocker arms.
( 37 )
$2,328.90
These High Energy hydraulic lifters from COMP Cams feature a patented, constant orifice-metering valve that precisely meters oil to the rocker arms. Continuous contact between the metering valve and the precisely coined bottom surface of the pushrod seat is maintained throughout the engine's rpm range, eliminating excessive oiling at high speeds. The pushrod seat is made of a special powdered metal iron alloy, heat-treated for strength and wear resistance. The longer piston is produced with through-hardened steel that provides more bearing surface and increased lifter longevity. These lifters have a lightweight check valve disk that allows for quicker response, resulting in increased engine speed before valve float.
( 153 )
$14.95
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$215.95
Melling offers their engine cylinder deactivation kits for converting active fuel management engines to non-active fuel management versions. These AFM (active fuel management) or MDS (multi-displacement system) delete combos include a variety of components to help complete the changeover. Order the Melling AFM/MDS delete combo best suited for your application. Each kit includes: * MDS delete camshaft (1) * Non-MDS hydraulic roller lifters (16) * Lifter guides for Non-MDS engines (4) Application dependent components include: * AFM/MDS solenoid plugs (4) * Camshaft thrust plate (1) * Variable Valve Tming (VVT) oil control valve (1) Notes: * When installing a delete cam, the active fuel management lifters must be replaced using non-active fuel management lifters. * The valve lifter guides used in non-active fuel management engines differ from those used in active fuel management engines and must be replaced for this application. * The AFM/MDS solenoids must be replaced using non-MDS plugs. * The vehicle engine control module/powertrain control module must be reprogrammed to turn off the active fuel management system in the operating software. * Pushrod length must be checked during installation to verify the correct length.
( 4 )
$634.99
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$1,394.99
FLOTEK's 290cc big block Chevy cylinder heads with 112cc combustion chambers are recommended for moderate street or street/strip BBCs with displacements up to 509 cu. in. operating at or below 6,500 rpm. It may be necessary to check clearance and slightly modify some domed aftermarket pistons due to the efficient heart-shaped combustion chamber on these heads (most of the newer designed dome profiles will clear). FLOTEK recommends removing material from the piston and not the cylinder head, as the combustion chamber shapes are very critical to flow—altering the cylinder head can unfavorably affect flow and power performance. FLOTEK's medium-sized 290cc oval port cylinder heads are designed for 3/8 in. pushrods with 0.120 in. wall thickness. They're 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.
( 1 )
$799.00
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$1,099.00
If huge horsepower is what you're searching for, then AFR 345cc Magnum BBC cylinder heads will certainly deliver. They're recommended for radical street/strip, Pro Street, or racing applications on engines up to 572 cu. in. operating below 7,000 rpm—and are capable of flowing 400 cfm at 0.700 in. of lift. These A356 aluminum heads are designed for maximum horsepower and rpm capability, with an average primary operating range of 3,500-8,000 rpm; they also provide impressive torque figures. AFR recommends the use of .120 in. wall pushrods and full-roller rocker arms for strength. It's vital that you check clearance of all moving parts due to the vast array of rocker arms, lifters, cams, springs, etc. Don't forget to check pushrod-to-head clearance, as well as any potential interference from your rocker arms and spring assemblies prior to final engine assembly. AFR 345cc Magnum BBC cylinder heads come standard with AFR's trademark 3/4 in. thick cylinder head deck, reinforced rocker stud bosses, and premium one-piece stainless steel 2.300 in. intake and 1.880 in. exhaust valves.
( 4 )
$4,050.90
Sealed Power hydraulic lifters are precision-manufactured to maintain precise valve timing under all operating conditions. A patented constant orifice metering valve provides precise oil metering to the overhead valvetrain, and longer plungers or pistons provide increased bearing surfaces, resulting in longer lifter life. Their check valves are lightweight flat discs, allowing for higher speeds and more uniform operation than competitive lifters.
( 52 )
$6.99
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$9.99
Ford Performance Parts 289/302/351W X2 Street Cruiser aluminum assembled cylinder heads provide an easy way to bolt-on significant horsepower to your Street Cruiser package! Manufactured using all-new Ford tooling, and constructed using 356-T6 aluminum, each cylinder head is cast, precision machined, and assembled with premium components. The X2 heads also feature high-temperature exhaust valve seats, bronze guides, common rocker bosses for strength, and increased section thickness in critical areas for porting. Sold individually, two of these X2 Street Cruiser cylinder heads are required for you to complete your engine's horsepower upgrade. Additional features include: * Intake flows approximately 230 cfm at .600 in. lift (at 28 in. of H20) * Exhaust flows approximately 160 cfm at .600 in. lift (at 28 in. of H20) * Machined for 1.94 in. intake and 1.54 in. exhaust valve diameters * Use either GT-40 or aftermarket performance intake manifolds * Must check your intake manifold for port match; not all intakes are compatible due to the tall high-flow ports * Machined for AGSP-32C gasket seat spark plugs * Each head weighs approximately 25 lbs. less than each production cast iron head * Each head is leak-tested prior to assembly * Compatible with many aftermarket intake manifolds, headers, and valve train components * Includes Ford Performance intake valves, exhaust valves, and PAC 1219X Ovate Beehive valve springs * Features 10 degree locks, steel valve spring retainers, and stock valve seals * Features wider valve cover gasket sealing rail to prevent leaks * Compatible with all Ford Performance roller camshafts and aftermarket hydraulic roller camshafts up to .600 in. lift * Compatible with bolt-down rockers 1.6-1.7 ratio; always check rocker arm clearance to valve springs with production rocker arms * Depending on lifter preload, Ford Performance rocker shim kits * Use Fel-Pro exhaust gasket (part number 1415) * Designed to be used on Ford Performance BOSS blocks; M-6010-BOSS302, M-6010-B302BB, M-6010-BOSS35195, M-6010-BOSS35192 and M-6010-BOSS351BB * Use Ford Performance M-6065-BOSS headbolt set or Ford Performance M-6014-BOSS head stud kit * Use Ford Performance head gasket M-6051-CP331 or M-6051-S331—or, for "Big Bore" application, use M-6051-R351 * Must use Ford Performance M-6065-D289 headbolt kit to install heads on 289/302 production blocks * Does not fit 1986 5.0L with flat-top pistons unless pistons are notched for valve relief
( 6 )
$1,336.99
ATK High Performance 250cc LS1/LS6 aluminum assembled engine cylinder heads are complete new builds. They include valves, valve springs, valve spring retainers, valve stem seals, and soft plugs. All threads are checked and repaired, if necessary; and all passages and part interfaces are pressure checked. Product specifications: * Material: A356 aluminum * Bolt count: 6-bolt head * Intake port volume: 250cc * Intake port dimension: 3.227 in. H x 1.119 in. W * Intake port location: Stock cathedral port * Intake valve size: 2.080 in. * Intake valve material: Stainless steel * Exhaust port volume: 105cc * Exhaust port dimension: 1.628 in. H x 1.722 in. W * Exhaust port location: .086 in. raised * Exhaust valve size: 1.60 in. * Exhaust valve material: Stainless steel * Combustion chamber size: 61cc * Valve cover bolt pattern: Perimeter bolt * Valve angle: 11 degree * Valve spring pocket diameter: 1.610 in. O.D. * Valve spring pac: 1905 dual spring (hydraulic roller) * Valve spring setup height: 1.800 in. * Valve spring closed pressure: 160 lbs. (with retainer) * Valve spring open pressure: 1.200 in., .600 in. lift, 425 lbs. / 1.150 in., .650 in., lift 445 lbs. (with retainer) * Valve spring max lift: .650 in. * Valve guide material: Manganese bronze * Valve seal material: Viton© * Valve seat material: Powder metal * Retainer material: Titanium * Deck thickness: .750 in. * Minimum bore diameter: 3.900 in. (will not fit stock bore 4.8L/5.3L) * Flat mill: .006 in. per cc * Spark plug dimensions: 14mm x .708 in. with tapered seat * Torque specifications per application based on factory or aftermarket bolts/studs
Not Yet Reviewed
$998.99
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
BTR V2 Series camshafts are designed for excellent performance and drivability. The V2 is a revised camshaft that provides more average torque, higher peak power, and a maximum depth heat treatment. The maximum heat treatment depth is achieved by using cam cores made within a few thousandths of final grind size. Numerous grinds for turbo, supercharged, and naturally aspirated engines are available for your project—all backed by years of experience, knowledge, and a passion for power. BTR V2 Series camshaft features include: * Revised camshaft center lines for increased average torque * Engine dyno verified to produce more power * Each "stage" has a specific cam core * Maximum heat treatment penetration
( 3 )
$409.99
Philadelphia Racing Products billet LS rocker arm stands are the answer to strengthening your valvetrain. Each bar is machined from 6061 aluminum and precision-cut. These bars are designed to help with rocker arm control, reducing flex and distortion that is imposed from the valvetrain. Order the rocker arm stands designed to fit your cylinder head application.
( 1 )
$87.99
Edelbrock Performer RPM 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. These heads offer improved power throughout the RPM range for greater throttle response and top-end horsepower. Countless options are available; order the model recommended for your vehicle and engine application.
( 163 )
$780.50
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$1,295.50
Chevrolet Performance cast iron Vortec cylinder heads will fit 1958 and later small block Chevy engines, and offer a 20 to 40 hp increase over earlier cast iron small block heads. Features include fast burn combustion chambers, and a high-velocity port design. They require the use of a Vortec-style intake and self-aligning rocker arms, and come complete with valves, springs, and retainers.
( 6 )
$795.65
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.
( 41 )
$1,251.50
Edelbrock Performer RPM bare NHRA Stock/Super Stock cylinder heads deliver great throttle response and power from 1,500 to 6,500 rpm, and with winning results. Offering the best in quality and performance, these bare heads are cast and heat-treated in the Edelbrock Foundry and machined in their manufacturing facility. Designed with the latest computer technology, they have highly efficient ports and state-of-the-art combustion chambers shapes for improved performance throughout the rpm range with great throttle response and top-end horsepower. Edelbrock Performer RPM bare NHRA Stock/Super Stock cylinder heads include top-quality features, like threaded inserts in rocker stud and exhaust bolt holes for superior strength and durability, and manganese-bronze valve guides with ductile iron valve seats.
( 1 )
$782.50
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 )
$456.99
"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 )
$589.88
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