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Engines & Components

Engines & Engine Parts

Engines & Engine Parts

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.

Part Groups

Results 1 - 24 of 509

Summit Racing™ Pro LS Connecting Rods

Summit Racing™ Pro LS forged H-beam connecting rods deliver industry-leading fit, finish, and durability at an affordable price. They're available in different size options, individually or in a set of 8. Check out the long list of premium features: * 4340 forged steel * Tested to over 1,200 hp in boosted applications * Designed for up to 5,000 ft. per minute avg. piston speed in Street and Drag applications * ARP 2000 rod bolts with 200,000 psi tensile strength * Dual ribbing on rod cap for maximum strength * Stroker clearanced--minor cylinder notching may be required * Accommodates most camshafts with 4.250 stroke * Bores finished to +/- .0001 in. * Balanced to within +/- 1 gram per end * Full-floating with precision-honed bronze bushing * Small-end supports the wrist pin with minimal side clearance for maximum shear strength * Each rod is magnetic particle tested to ensure flawlessness * Shot-peened finish to remove potential for stress risers

4.89 out of 5 stars ( 19 )

$88.99

$699.99

BluePrint Engines Pro Series Chevy 502 C.I.D. 627 HP Dressed Long Block Crate Engines

Blueprint Pro Series is for those wanting maximum horsepower and durability. BluePrint Engines Pro Series Chevy 502 c.i.d. 627 hp dressed long block crate engines offer any custom builder, hot rodder, or kit car builder an engine that has been fully dyno tested, passed vigorous inspections, and is ready to power up your project. Blueprint's Pro Series 502 big block GM-style engines are dressed with carburetor, aluminum heads, forged pistons, forged crankshaft, and a hydraulic roller cam. Additional features: * Standard deck with 4-bolt main * Forged H-beam connecting rods * Cylinder head specs: -- 119cc chamber -- 2.30 in. intake / 1.88 in. exhaust valves -- 316cc intake / 124cc exhaust runners * Camshaft specs: -- .647 intake / .647 exhaust -- 248 intake / 254 exhaust duration -- at .050 - 112 degree lobe separation * Dyno test results shipped with engine

4.5 out of 5 stars ( 2 )

$11,949.00

$14,049.00

ARP Pro Series Cylinder Head Studs

ARP Pro Series cylinder head studs are cold-forged to ensure molecular integrity. They're heat-treated prior to thread rolling and machining. ARP Pro Series kits are also available with 12-point nuts, and all studs come complete with hardened parallel washers for an even load distribution and accurate torque readings. With hundreds of models ready to ship, these cylinder head fasteners can be ordered for virtually any style engine.

4.83 out of 5 stars ( 787 )

$34.99

$1,238.99

ARP Pro Series Cylinder Head Bolt Kits

The Pro Series cylinder head bolts from ARP are cold-forged to ensure molecular integrity. They are heat-treated prior to thread rolling and machining, and are rated at a whopping 190,000 psi. The Pro Series are also available with hex and 12-point heads. All kits come complete with hardened parallel washers for even load distribution and accurate torque readings.

4.83 out of 5 stars ( 166 )

$104.99

$279.99

On Sale

Summit Racing™ Pro LS Vortec Truck Swap Camshafts

Summit Racing™ Pro LS Truck Swap cams are affordable and give you maximum punch where the torque converter hits. The cam lobes are designed for excellent valvetrain longevity. Both drop-in or high-lift versions are available. They come in stages allowing you to quickly determine which gives you the idle and efficiency you are looking for. Idle response and the midrange torque from theses camshafts is unmatched. Starting with American bearing steel, they are precision machined on a Landis 3LB CNC grinder with CBN diamond wheels for an extremely good finish quality. The lobes have been designed for stability at high rpm with the spring pressures found in commonly available, quality spring packs.

4.74 out of 5 stars ( 88 )

$319.99


$269.99

$319.99

BluePrint Engines Pro Series Chevy LS 427 C.I.D. 605 HP Long Block Crate Engines

BluePrint Engines provides a Dyno Promise with results and bragging rights. They make sure they hit their target horsepower and proper torque with every crate engine, utilizing an advanced computerized balancer to get rotating assemblies within 2 grams, ensuring silky smooth power over the entire rpm range. According to BluePrint, that's precisely why their engines sound and run better than the competitors. Accompanying your BluePrint Engines Pro Series Chevy LS 427 c.i.d. 605 hp long block crate engine will be a comprehensive, dyno-generated printout showing its critical specs. No more guessing what the real-world peak horsepower and torque ratings are. Any doubters in the crowd? Simply flash them your dyno results! BluePrint Engines Pro Series Chevy LS crate engine: * Horsepower and torque: 605 hp/565 lb.-ft. * Compression ratio: 11:1 * BluePrint Engines LS3 aluminum cylinder heads -- 69cc chamber -- 2.165 in. intake/1.590 in. exhaust valves -- 259cc intake/102cc exhaust runners * Hydraulic roller camshaft: -- .624 intake/.624 exhaust lift -- 239 intake/255 exhaust duration at .050 in. -- 114-degree lobe separation angle -- 3-bolt cam * Forged steel crankshaft -- 4.125 in. stroke -- 6.125 in. connecting rods * Forged pistons * BluePrint Engines high-strength cast iron 6.2L block -- Increased deck thickness and strength webbing -- Extended cylinder skirt -- Priority main oiling -- 4.0685 in. bore -- 6-bolt main -- 1-piece rear main seal -- Improved water jacket design -- Utilizes OEM LS3 front and rear covers * LS swap oil pan * Harmonic balancer * Valve covers * Timing cover

5.0 out of 5 stars ( 1 )

$9,999.00

Summit Racing™ Pro LS Upgraded Rocker Arms

Summit Racing™ Pro LS upgraded rocker arms feature high-quality rocker bodies that utilize the factory style pedestal mount. They are made of high-grade cast steel construction to ensure long-lasting durability and performance. This design replaces the factory bearing and powdered metal trunnion and utilizes a captive bearing design and a bearing steel trunnion. These rocker arms are a perfect upgrade for higher rate springs and performance camshafts. Summit Racing™ Pro LS upgraded rocker arms come preassembled with heavy-duty trunnion kits, which saves you time and the additional cost of an installation tool. Features include: • New body casting includes thicker webbing in critical areas for increased strength • Additional oiling provisions for the bearings • Heavy-duty clips or retainers • Durable captive bearing design and bearing steel trunnion

4.16 out of 5 stars ( 25 )

$25.99

$328.99

Summit Racing™ Pro LS Cast Aluminum Oil Pans

Swapping a GM LS based engine just got a lot easier! Summit Racing™ Pro LS cast aluminum oil pans are specifically designed to install an LS engine in a variety of GM muscle car and truck chassis. These pans offer OEM fitment, oil filter mounting, oil cooler provisions, and use OEM-style gaskets. They are manufactured from cast aluminum to provided proper structural rigidity and heat dissipation. The pans include a baffle, oil pickup tube, sump plug, oil filter stud, and oil passage cover.

3.89 out of 5 stars ( 18 )

$379.99

$399.99

Summit Racing™ Pro SBC Camshafts

Are you looking for a great made-in-America hydraulic roller cam for your small block Chevy? Summit Racing's™ new Pro SBC camshafts are affordable and utilize the latest lobe design technology. Starting with American bearing steel billets, the cams are precision-machined on a modern CNC grinder with CBN diamond wheels for unmatched quality. They're designed with optimal valve events and greater lift for maximum performance. With four levels and performance options to select from, Pro SBC camshafts will deliver just the idle characteristics you're looking for.

4.93 out of 5 stars ( 27 )

$279.99

BluePrint Engines Pro Series Chevy 454 C.I.D. 563 HP Dressed Long Block Crate Engines

For those wanting maximum horsepower and durability that's pretty much ready to go, BluePrint Engines Pro Series Chevy 454 c.i.d. 563 hp dressed long block crate engines are right for you. In addition, every BluePrint engine is dyno-tested to make sure they hit their target horsepower and torque. Pro Series 454 dressed long blocks feature: * 563 hp, 545 ft.-lb., compression ratio 10.0:1 * BluePrint cast iron block with 4-bolt main --4.250 in. bore --1-piece rear main seal --Mechanical fuel pump provision --Passenger side dipstick --Drilled and tapped for clutch linkage * Forged crankshaft and connecting rods * Forged pistons with rings * Internal front/internal rear balanced rotating assembly * BluePrint aluminum cylinder heads --64cc chamber --2.08 in. intake/1.60 in. exhaust valves --220cc intake/67cc exhaust runners * Hydraulic roller cam --.638 intake/.622 exhaust lift --251 intake/259 exhaust duration @ .050 --114 degree lobe separation * Valve covers, oil pan, and timing cover * Harmonic balancer * MSD Pro billet distributor * 950 cfm carburetor * Aluminum intake manifold

Not Yet Reviewed

$11,199.00

BluePrint Engines Pro Series Chevy 540 C.I.D. 670 HP Dressed Long Block Crate Engines

Enter the realm of pavement-grinding power with the BluePrint Pro Series Chevy 540 c.i.d. dressed long block crate engines. These 670 hp powerhouses feature a 30-month/50,000-mile warranty and they are the perfect choice for drivability and reliable high-end performance. Additionally, these assemblies are manufactured under strict tolerances and provide outstanding, consistent results. All of the rotating assemblies are balanced within 2 grams on a computerized balancer. BluePrint Pro Series crate engines are also dyno-tested and include the dyno sheets. For high-horsepower, big displacement engines, BluePrint Pro Series Chevy 540 c.i.d. dressed crate engines are the way to go! Features include: * New BluePrint Block * 4 bolt mains * Forged crankshaft * Forged connecting rods * Hydraulic roller camshaft - Lift = 0.647 in. / 0.647 in. - Duration @ 0.050 in. = 248 / 254 degrees - Lobe Separation = 112 degrees * Double roller timing chain * Aluminum cylinder heads * Carburetor * Billet distributor

5.0 out of 5 stars ( 3 )

$14,049.00

Summit Racing™ Pro LS Crankshafts

Summit Racing™ Pro LS forged steel crankshafts deliver industry-leading fit, finish, and durability at an affordable price. Order the model recommended for your year/make and engine application. Check out the long list of premium features: * 4340 forged steel * Tested to over 1,200 hp in boosted applications * Core hardened to optimum strength, then tempered to remove stresses * Nitride hardened, which results in less distortion, excellent case depth, and more fatigue life * Profiled counterweights reduce windage * Precision stroke and indexing * Lightening holes are drilled in the rod journals for quicker engine acceleration * Gun-drilled Main Journals for quicker engine acceleration * Each crank is magnetic particle tested to ensure it's free of flaws * Large radius fillets for increased strength, narrowed rod bearings for reduced friction * Straight shot oiling for maximum lubrication just prior to maximum load angle * Maximum journal tolerances of +/- .0001 in. ensure consistent bearing clearance * Micro-polished journals with chamfered oil holes for maximum durability and bearing life * Optimized counterweight placement for reduced twisting at high RPM and ease of balancing * High-quality reluctor rings are installed with precision fixturing * Extra 3/16 in. front keyway for blower cars

4.58 out of 5 stars ( 12 )

$839.99

BluePrint Engines Pro Series Chevy LS 376 C.I.D. 530 HP Long Block Crate Engines

BluePrint Engines provides a Dyno Promise with results and bragging rights. They make sure they hit their target horsepower and proper torque with every crate engine, utilizing an advanced computerized balancer to get rotating assemblies within 2 grams, ensuring silky smooth power over the entire rpm range. According to BluePrint, that's precisely why their engines sound and run better than the competitors. Accompanying your BluePrint Engines Pro Series Chevy LS 376 c.i.d. 530 hp long block crate engine will be a comprehensive, dyno-generated printout showing its critical specs. No more guessing what the real-world peak horsepower and torque ratings are. Any doubters in the crowd? Simply flash them your dyno results! BluePrint Engines Pro Series Chevy LS 376 c.i.d. crate engine: * Horsepower and torque: 530hp/495 lb.-ft. * Compression ratio: 10.7:1 * BluePrint Engines LS3 aluminum cylinder heads -- 69cc chamber -- 2.165 in. intake/1.590 in. exhaust valves -- 259cc intake/102cc exhaust runners * Hydraulic roller camshaft: -- .612 intake/.585 exhaust lift -- 225 intake/238 exhaust duration at .050 in. -- 113-degree lobe separation angle -- 3-bolt cam * Nodular iron crankshaft -- 3.622 in. stroke -- Forged 6.125 in. rods * Hypereutectic pistons * BluePrint Engines high-strength cast iron 6.2L block -- Increased deck thickness and strength webbing -- Extended cylinder skirt -- Priority main oiling -- 4.0662 in. bore -- 6-bolt main -- 1-piece rear main seal -- Improved water jacket design -- Utilizes OEM LS3 front and rear covers * LS valve cover * LS swap oil pan * Harmonic balancer Note: Controlled by customer provided ECU.

Not Yet Reviewed

$7,999.00

BluePrint Engines Pro Series Chevy 427 C.I.D. 540 HP Dressed Long Block Crate Engines

Does your car need more power? Of course it does! Install 540 hp and be the envy of the block. BluePrint Engines Pro Series 427 c.i.d. dressed long block crate engines have the muscle you need to impress. These powerhouses feature a 30-month/50,000-mile warranty and they are the perfect choice for drivable and reliable high-end performance. Additionally, these assemblies are manufactured under strict tolerances and provide outstanding, consistent results. All of the rotating assemblies are balanced within 2 grams on a computerized balancer. BluePrint Pro Series crate engines are also dyno-tested and include the dyno sheets. For high-horsepower, big displacement engines, BluePrint Pro Series Chevy 427 c.i.d. dressed crate engines are the way to go! Features include: * BluePrint Engines cast iron block * 4340 forged crankshaft * 4340 forged connecting rods * Forged pistons * 9.5:1 compression * 4.125 in. x 4.000 in. bore/stroke * Hydraulic roller camshaft * Double roller timing chain * 64cc chamber aluminum cylinder heads * 1.6 ratio rocker arms * Carburetor * Billet distributor

5.0 out of 5 stars ( 5 )

$10,799.00

BluePrint Engines Pro Series Chevy 502 C.I.D. 621 HP Base Long Block Crate Engines

BluePrint Engines Pro Series Chevy 502 c.i.d. 621 hp base long block crate engines are fully Dyno tested, passed vigorous inspections, and are prepared for those wanting maximum horsepower and durability. Features, specs, and contents: * 621 hp, 560 ft.-lb., compression ratio 10.0:1 * Cast iron block with 4-bolt main * Forged steel crankshaft and connecting rods * Forged pistons and rings * Internal balanced rotating assembly * BluePrint aluminum cylinder heads --119cc chamber --2.30 in. intake/1.88 in. exhaust valves --316cc intake/124cc exhaust runners * Hydraulic roller cam --.647 intake/.647 exhaust lift --248 intake/254 exhaust duration @ .050 --112 degree lobe separation * Valve covers, oil pan, and timing cover * Harmonic balancer

Not Yet Reviewed

$10,749.00

BluePrint Engines Pro Series Chevy LS 376 C.I.D. 530 HP EFI Base Dressed Long Block Crate Engines

BluePrint Engines provides a Dyno Promise with results and bragging rights. They make sure they hit their target horsepower and proper torque with every crate engine, utilizing an advanced computerized balancer to get rotating assemblies within 2 grams, ensuring silky smooth power over the entire rpm range. According to BluePrint, that's precisely why their engines sound and run better than the competitors. Accompanying your BluePrint Engines Pro Series Chevy LS 376 c.i.d. 530 hp EFI base dressed long block crate engine will be a comprehensive, dyno-generated printout showing its critical specs. No more guessing what the real-world peak horsepower and torque ratings are. Any doubters in the crowd? Simply flash them your dyno results! These long block engines are available with or without complete engine controller with ECU, harness, throttle pedal, and sensors. Select the one you want. BluePrint Engines Pro Series Chevy LS EFI base dressed engine: * Horsepower and torque: 530hp/495 lb.-ft. * Compression ratio: 10.7:1 * BluePrint Engines LS3 aluminum cylinder heads -- 69cc chamber -- 2.165 in. intake/1.590 in. exhaust valves -- 259cc intake/102cc exhaust runners * Hydraulic roller camshaft: -- .612 intake/.585 exhaust lift -- 225 intake/238 exhaust duration at .050 in. -- 113-degree lobe separation angle -- 3-bolt cam * Nodular iron crankshaft -- 3.622 in. stroke -- 6.125 in. connecting rods with 150,000 psi bolts * Hypereutectic pistons * BluePrint Engines high-strength cast iron 6.2L block -- Increased deck thickness and strength webbing -- Extended cylinder skirt -- Priority main oiling -- 4.0662 in. bore -- 6-bolt main -- 1-piece rear main seal -- Improved water jacket design -- Utilizes OEM LS3 front and rear covers * LS swap oil pan * Harmonic balancer * DBW throttle body * Available with a GM plastic or fabricated intake manifold * Fuel injectors and rail * Coil packs * Spark plugs and wires * Water pump

5.0 out of 5 stars ( 1 )

$9,849.00

$13,349.00

Summit Racing™ Pro LS 6.0L Rotating Assemblies

Summit Racing™ Pro LS 6.0L forged rotating assemblies provide industry-leading fit, finish, and durability at an affordable price. These kits are tested to over 1,200 hp in turbo applications. They're available in a wide range of fitment and performance options. Standard features and specs may include: * 4340 forged steel crank * Core hardened to optimum strength, tempered, and nitride hardened * Lightening rod journals, gun-drilled mains, and profiled counterweights for better engine acceleration * Maximum journal tolerances of +/- .0001 to ensure consistent bearing clearance * Straight-shot oiling for maximum oil film strength at the maximum load angle * 4340 forged H-beam connecting rods * Designed for 5,000 ft./min. average piston speed in street and drag applications * 7/16 ARP 2000 rod bolts with 200,000 psi tensile strength; dual ribbed caps for maximum strength * Added stroker clearance and balanced to within +/- 1 gram per end * Full-floating and precision-honed in the USA to +/- .0001 in. * 2618 forged aluminum pistons * Ultra-modern 2618 alloy forgings for boost and nitrous with maximum ring land thickness * Pressure-fed pin oiling with durable chromium steel wrist pins * Specially profiled and coated piston skirts for stroker applications with tight piston-to-wall clearance * Generous valve reliefs for extra piston-to-valve clearance accommodate cathedral and rectangle heads * Premium steel piston rings * Steel top rings designed for maximum life with boost and nitrous * File-fit rings for maximum ring seal, reduced friction, and tensions optimized for wet sump engines * Martensitic ductile Napier-hook second rings for strength and maximum oil control * Premium main and rod bearings * Clevite H-bearings are designed for high-rpm operation in racing applications * Tri-metal bearings designed with high bearing crush for maximum retention * Medium eccentricity shells with precision wall tolerance of +/- .00015 in.

5.0 out of 5 stars ( 8 )

$2,509.87

$2,798.87

Summit Racing™ Camshaft and Spring Kit Pro Packs

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.

5.0 out of 5 stars ( 1 )

$680.94

$910.85

Summit Racing™ Pro Series Stainless Rocker Arms

Summit Racing™ Pro Series stainless rocker arms will pay big dividends in performance! The arms are machined from premium-quality material to provide high yield strength and resist deflection, as well as extraordinary fatigue resistance. They feature full complement friction-reducing needle bearings—and incorporate an exceptional design that provides plenty of clearance for higher open valve spring pressures. Each rocker body includes polished top lines and is carefully assembled and inspected to provide the finest rocker arms available in today's racing and high performance industry. Order the set with size and ratio recommended for your engine application.

4.53 out of 5 stars ( 36 )

$314.99

$357.99

Summit Racing ™ Pro SBF and 303+ Hydraulic Roller Cams

Are you looking for a great made-in-the-USA cam for your 5.0L H.O. engine? Pro SBF and 303+ cams start with American bearing steel billets, the cams are precision-machined on a modern Landis CNC grinder with CBN diamond wheels for unmatched quality. Still thinking in terms of LSA and duration splits? These cams are designed on a whole other level by tuning each of the four valve events separately. Having a cam with attitude doesn't mean it has to be a dog at low rpm. We've tuned each of the four valve events to maximize power and torque in the range you will be running in. You CAN have your cake and eat it too. Summit Racing's™ affordable E303 Plus, B303 Plus, and F303 Plus are designed to tune easily and have the idle you're looking for. We've applied the latest lobe technology, and the valve events have been tweaked for modern intake manifolds and cylinder heads. The Pro SBF lineup ranges from a 204-duration daily driver tow cam to a 252 duration 8k rpm barn-burner. They are ground in fine increments to match your specific engine's top-end, displacement and intended rpm range. The lobes are stable to high-rpm and easy on the valvetrain, but we've added lift to take advantage of the high-lift flow of the latest cylinder heads. They are more aggressive with more overlap than their 303+ brothers for more attitude.

4.5 out of 5 stars ( 14 )

$270.99

$279.99

COMP Cams Ultra Pro Magnum Rocker Arms

Utilizing years of valvetrain design experience, the latest FEA stress analysis technology, and an exhaustive testing regiment (dyno and Spintron), COMP Cams engineering team left no detail to chance. Everything from casting techniques to valve spring clearance was scrutinized to ensure that Ultra Pro Magnum rocker arms not only lived up to the lofty standards of their predecessor, but also took stud mount rocker performance, stability, and value to a whole new level. The most noticeable advancement centers around their nearly unbreakable investment cast 8650 chromoly body. The arched, web-like design delivers a nearly 29 percent increase in strength and rigidity, while reducing the moment of inertia and optimizing the dynamic balance. The resulting rockers maximize lift and valvetrain control at high rpm. The increased retainer and valve spring clearances of the new design enable the use of large-diameter valve springs, retainers, and locks, without clearance or fitment issues. The new black oxide exterior finish offers a distinctive appearance, along with long-term corrosion resistance. The COMP Cams Ultra Pro Magnum rocker arms feature an oversized trunnion and precision-sorted needle bearings designed for use with high-load valve springs. These unique rockers also feature hardened roller tips for reduced friction and elimination of the valve stem "side loading" that causes premature valve guide wear.

4.76 out of 5 stars ( 200 )

$45.95

$622.95

Summit Racing™ Pro LS Forged Pistons

The Summit Racing Pro LS forged pistons are affordable and built to withstand the rigors of high boost and nitrous. These pistons are forged from Premium 2618 alloy - the strongest made. They have specially profiled piston skirts, which allow them to run a tight piston-to wall-clearance for maximum ring seal and minimal friction. They have many other high-tech features too! • Maximum ring-land thickness for power-adders • Dedicated forgings for the best strength-to-weight ratio • Multiple compression ratios specifically targeted for 4.8L, 5.3L, 5.7L, and 6.0L engines • Designed around Premium file fit rings with Gas-Nitride or Plasma steel tops and ductile Napier second rings • Available in versions for Gen. 3 Press-fit, Gen. 4 Floating, and Aftermarket 6.125 rods • Standard and Stroker versions available • Generous valve reliefs that work with both Cathedral port AND Rectangle port heads • Pressure-fed pin-oiling • Pressure seal groove in 2nd ring land for increased seal. • High-Speed brush deburring to remove sharp edges that cause detonation • Ultra-Modern 2.250 pin forgings clear the reluctor rings with stroker cranks • Durable Chromium Steel wristpins. • Replacement Singles Available

4.62 out of 5 stars ( 68 )

$93.99

$649.99

COMP Cams Ultra Pro Magnum XD Roller Rocker Arms

Built to outlast and outperform in accuracy and strength, Ultra Pro Magnum XD roller rocker arms are engineered from durable 8650 steel and include a machined billet pushrod seat insert for a wide range of super accurate ratios. A unique and wide ratio range to fit almost any popular application from 1.5 to 1.8 in 0.5 in. increments for Chevy and 1.6 to 1.73 for various Ford applications is available. These Ultra Pro Magnum XD rockers are fully rebuildable and boast precision-sorted needle bearings and hardened roller tips. And, they work with most diameter springs and retainers. The XD design utilizes advanced FEA and CAD design and development to improve strength, stiffness and MOI (moment of inertia) optimization for drag and circle track applications.

4.58 out of 5 stars ( 59 )

$55.95

$649.95

Summit Racing™ Pro LS Piston and Rod Kits

Summit Racing™ Pro LS piston and rod kits deliver industry-leading fit, finish, and durability at an affordable price. These assemblies are tested to over 1,200 hp in turbo applications. They're available in a broad range of fitment and performance options. Standard features and specs may include: * 4340 forged H-beam connecting rods * Designed for 5,000 ft./min. average piston speed in street and drag applications * 7/16 ARP 2000 rod bolts with 200,000 psi tensile strength; dual-ribbed caps for maximum strength * Added stroker clearance and balanced to within +/- 1 gram per end * Full-floating and precision-honed in the USA to +/- .0001 in. * 2618 forged aluminum pistons * Ultra-modern 2618 alloy forgings for boost and nitrous with maximum ring land thickness * Pressure-fed pin oiling with durable chromium steel wrist pins * Specially profiled and coated piston skirts for stroker applications with tight piston-to-wall clearance * Generous valve reliefs for extra piston-to-valve clearance accommodate cathedral and rectangle heads * Premium steel piston rings * Steel top rings designed for maximum life with boost and nitrous * File-fit rings for maximum ring seal, reduced friction, and tensions optimized for wet-sump engines * Martensitic ductile Napier-hook second rings for strength and maximum oil control

4.84 out of 5 stars ( 19 )

$1,465.97

$1,500.97

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