2003 Engines & Components

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 * Precision wrist pins and retainers * 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 )

$1,504.97

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$1,656.97

Edelbrock Performer Cylinder Heads

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.

3.86 out of 5 stars ( 42 )

$1,933.50

Trick Flow® GenX® 225 Cylinder Heads for GM LS2

Trick Flow GenX® 225 cathedral port cylinder heads are fully CNC-machined to significantly increase the performance of 6.0L LS2 engines. Trick Flow engineers altered the valve angles from 15° to 13.5° to decrease valve shrouding, increase mid-lift airflow, and improve rocker arm-to-valve cover clearance. Top-of-the-line CNC Competition Ported runners have a premium high resolution surface finish for maximum flow and performance. The spark plugs were relocated in the CNC-profiled combustion chambers to enhance mid-lift airflow and increase the rigidity of the casting for extreme horsepower applications. Material was added at the rocker arm mounting points to increase high-rpm valvetrain stability. Trick Flow GenX 225 cylinder heads are emissions-legal under CARB E.O. #D-747 for 1997-present GM vehicles with 4.8L, 5.3L, 5.7L, and 6.0L engines. They are available fully assembled or as bare castings. Sold individually.

5.0 out of 5 stars ( 3 )

$1,524.99

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$1,574.99

Trick Flow® Twisted Wedge® Race 195 Cylinder Heads for Ford 4.6L/5.4L 2V

Trick Flow Twisted Wedge® Race 195 cylinder heads are perfect for big bore Ford Modular 2V engine builds as well as engines with superchargers or turbos, high compression E85, big shot nitrous oxide, and other mega-power combinations. The secret lies in the CNC-profiled Twisted Wedge combustion chambers and intake valves moved to the opposite side of the cam. These features provide dramatic increases in mid-lift airflow, piston-to-valve clearance, and valve-to-bore clearance for using higher lift cams and larger valves without altering bore size or flycutting pistons. Trick Flow Twisted Wedge Race 195 heads have fully CNC Competition Ported runners with a premium high resolution surface finish for ultimate performance. Larger, stronger valves and race-duty valvetrain components give these heads 8,000-plus rpm capability. Other features include OE PI-style intake inlets, patented replaceable cam bearing journals (no more junking heads because of trashed cams!), 3/4" thick decks, and 3/4"-reach spark plugs. Trick Flow Twisted Wedge Race 195 heads fit all 2V Romeo and Windsor engines and accept all OE-style camshafts, followers, lash adjusters, valve covers, and most OE Ford front covers. The heads are available fully assembled or as bare castings. Sold individually.

5.0 out of 5 stars ( 2 )

$1,899.99

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

Summit Racing™ Pro LS Crank and Rod Kits

Summit Racing™ Pro LS crank 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. Order the kit recommended for your vehicle and engine. 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.

4.0 out of 5 stars ( 1 )

$1,599.98

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)

4.17 out of 5 stars ( 6 )

$1,644.95

Trick Flow® GenX® 215 Cylinder Heads for GM LS1

Trick Flow GenX® 215 cathedral port cylinder heads are fully CNC-machined to significantly increase the performance of 5.7L LS1 engines. Trick Flow engineers altered the valve angles from 15° to 13.5° to decrease valve shrouding, increase mid-lift airflow, and improve rocker arm-to-valve cover clearance. Top-of-the-line CNC Competition Ported runners have a premium high resolution surface finish for maximum flow and performance. The spark plugs were relocated in the CNC-profiled combustion chambers to enhance mid-lift airflow and increase the rigidity of the casting for extreme horsepower applications. Material was added at the rocker arm mounting points to increase high-rpm valvetrain stability. Trick Flow GenX 215 cylinder heads are emissions-legal under CARB E.O. #D-747 for 1997-present GM vehicles with 4.8L, 5.3L, 5.7L, and 6.0L engines. They are available fully assembled or as bare castings. Sold individually.

4.67 out of 5 stars ( 3 )

$1,574.99

Dart LS Billet Crankshafts

Enhance the performance of your LS engine with Dart's top-tier 4340 billet crankshafts, meticulously crafted to elevate your engine's performance. Engineered with precision, these crankshafts boast a seamless one-piece seal, impeccably polished journals, and the distinctive "KE" variant featuring knife-edge machining, ensuring compatibility with OEM blocks. Dart's commitment to quality design empowers you to unleash unparalleled power. Available in both 3.622 and 4.000 stroke configurations, these crankshafts are rated for an impressive 2,000+ hp, embodying the pinnacle of racing performance. Crafted by racers for racers, Dart products consistently secure victories on the track, cementing their reputation as the go-to choice for those seeking superior engine components.

Not Yet Reviewed

$1,999.99

Callies Ultra Connecting Rods

Callies Ultra connecting rods are made with pride to exacting specifications. They are produced from extremely clean Timken steel, meticulously crafted with great attention to detail. If you choose Callies Ultra connecting rods, be confident of dependable performance and outstanding workmanship.

Not Yet Reviewed

$1,952.00

COMP Cams Shaft Mount Aluminum Rocker Arms

COMP Cams shaft mount aluminum rocker arms are one of the most cost-effective ways to increase horsepower. These shaft rockers were designed using the latest in computer software and engineering. They center the roller tip over the valve tip at the correct time so that the roller tip is never more than 0.020 in. off-center of the valve tip. At the greatest load point, the roller tip contact is on the center of the valve. At valve closing, the roller tip contact is slightly behind the valve centerline. When the valve is at full open, the tip contact is slightly behind the centerline of the valve. The results are more horsepower and better performance.

5.0 out of 5 stars ( 1 )

$1,705.95

Dart GEN III Fully Counterweighted Crankshafts

Dart GEN III fully counterweighted crankshafts are built for enhanced bearing load distribution, allowing them to withstand high-boost and high-rpm applications. With eight counterweights (instead of 6), crank is substantially stiffened—which reduces flexing, and thereby puts less stress on the mains. Crank comes in a 4.000 in. stroke with an LS1 or LS7 snout, and has lightening holes in the rod journals to reduce crankshaft inertia weight for faster rotation and improved engine acceleration. Your crankshaft is the backbone of your engine—so choose one that has the quality, features, and price you want: the Dart Gen III fully counterweighted crankshaft. Additional product features: * Extra-strong, 4340 billet one-piece construction * Long and short snouts available * Heavy-duty rod cheeks * Small hole through the rod pin * Rough balanced @ 1780 grams

Not Yet Reviewed

$1,999.99

March Performance Sport Track Chevy Serpentine Pulley Kits

These March Performance Sport Track Chevy serpentine pulley kits are designed for the budget-minded engine builder with the same quality and innovation as the normal March Performance kits. They are designed to mount the air conditioning low and on the passenger side for a compact and clean appearance. The serpentine pulley kits will eliminate belt throwing and offer no-slip operation. These March Performance Sport Track Chevy serpentine pulley kits are manufactured from 6061-T6 billet aluminum and are available in black or silver powdercoated finishes.

3.7 out of 5 stars ( 60 )

$1,872.99

All American Billet Serpentine Kits

All American Billet serpentine kits are perfect for cleaning up your engine compartment and giving it a fresh look. These kits come standard with high performance accessories. If you need to replace your belt system or just want to show off to your friends these All American Billet serpentine kits will do just that! Installation is easy with all the hardware and necessary components included in the box. A variety of different setups are available to fit models with or without power steering and air conditioning.

4.0 out of 5 stars ( 16 )

$1,885.50

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$1,975.50

COMP Cams Stage 2 LST Camshaft Packages

COMP Cams Stage 2 LST camshaft packages for GM LS applications take the guesswork out of choosing the right valve train upgrade package for your specific engine and desired performance. The "Low Shock Technology" behind COMP Cams LST camshaft packages features lobe profiles designed to maximize horsepower, while improving stability at higher rpm. These profiles are also easier on the valve springs, enhancing durability and reducing load loss. By Spintron and dyno testing these new profiles with many combinations of valve train components, COMP Cams engineers have created valve train packages that are perfectly matched for maximum horsepower and dependability in all popular LS applications with varying modifications. Stage 2 LST kits commonly add 90+ hp, depending on application. Stage 2 LST camshaft packages include: * COMP Cams LST Camshaft * Pushrods * Valve Springs * Retainers * Valve Locks * Spring Seats * Valve Seats

Not Yet Reviewed

$1,535.95

Oliver Speedway Series Connecting Rods

Oliver Speedway Series connecting rods are designed for severe applications where engines are subject to high-rpm endurance racing or high loads over a wide variation in rpm. These rods are often used in large cubic inch late model dirt cars and forced-induction applications. All Oliver rods are precision-machined using only premium mill-certified aircraft quality E4340 chromoly alloy, heat-treated to produce a 100 percent martensite grain structure. The I-beam connecting rods feature an exclusive "Parabolic Beam" design that reduces beam stress and delivers the highest strength-to-weight ratio of any connecting rod currently made. Oliver Speedway Series connecting rods provide quality craftsmanship, materials, and processes to deliver the ultimate durability and strength—allowing you to push the limits. Order the length needed for your vehicle and engine application.

5.0 out of 5 stars ( 6 )

$1,599.97

Holley LS Engine Swap Accessory Drive Systems

Now available from Holley are LS engine swap accessory drive systems. Included are accessories and pulleys that are manufactured by OEM part suppliers for durability and direct bolt-on installation. Order the kit that's best suited for your vehicle and engine application. Features and facts: * Universal brackets fit virtually all common LS engines, regardless of water pump and harmonic balancer offsets--thus reducing cost and complexity compared with competitive products * Simple, dedicated installation kits allow easy fitment to Corvette, F-Body, or truck drive offsets * Accessories, tensioner, and pulleys are manufactured by OEM suppliers and many of the parts are used on production vehicles today

3.88 out of 5 stars ( 34 )

$1,749.95

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$1,999.95

Edelbrock E-Street Cylinder Heads

Are you looking for a set of entry-level street performance heads for your modern street rod, muscle car, or truck? Edelbrock E-Street cylinder heads are just the ticket. These heads feature A356 aluminum castings that are heat-treated to T-6 specs for superior casting strength and quality. Their modern combustion chamber design helps to improve the combustion process and their larger-than-stock intake and exhaust ports help to move more air through your engine. These features improve an engine's efficiency, resulting in more horsepower and torque and improved mileage potential. All Edelbrock E-Street cylinder heads are assembled with manganese bronze valve guides, powder metal interlocking valve seats, and stainless steel one-piece valves with hardened valve tips. Edelbrock E-Street cylinder heads are ideal for entry level street performance engines.

4.29 out of 5 stars ( 120 )

$1,549.95

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$1,667.50

March Performance Narrow Mount Chevy Serpentine Pulley Kits

March Performance has created a solution for mounting accessory components on the popular Chevy LS motors where low hood clearance and narrow frame clearance is required. Precision CNC-machined from 6061 T-6 aluminum for strength and a perfect fit, pulley kit components are hard coated on high-wear areas for durability and powdercoated for a maintenance-free finish. An OEM-style tensioner ensures perfect belt tension and a canister-style power steering pump provides compact hydraulic pressure for power steering.

1.0 out of 5 stars ( 2 )

$1,578.99

Trick Flow® GenX® 280 HD Cylinder Heads for GM LS3

Trick Flow® GenX® 280 HD cylinder heads offer an unbeatable combination of performance and durability, making them the perfect upgrade for your high-performance GM LS3 engine build. Assembled with Manley Severe Duty stainless steel valves, these heavy-duty versions of the standard GenX® 280 heads can withstand the added heat, stress, and abuse dealt by big power adders. That makes them the ideal choice for engines using superchargers, turbochargers, or nitrous. GenX 280 HD cylinder heads have fully CNC-profiled combustion chambers and CNC Competition Ported square port runners with a premium high resolution surface finish that guarantees dimensional accuracy and balanced flow from port-to-port for maximum power potential. The valve angles have been modified from the stock 15° to 12° to increase piston-to-valve clearance and allow the use of larger camshafts. The coolant holes through the head decks were designed to ensure compatibility with all LS head gasket and engine block combinations. The 6-bolt-per-cylinder mounting pattern for GMPP LSX and other aftermarket blocks increases clamping force to prevent head gasket failure, cylinder distortion, and other issues that plague the factory 4-bolt design. Trick Flow® GenX® 280 HD heads have LS3 port locations to work with all LS3-style intake manifolds and LS9/LSA blower assemblies. They must be used on engines with 4.000" or larger bores. Cylinder heads are available fully assembled or as bare castings. Sold individually.

Not Yet Reviewed

$1,749.99

Fleece Performance Freedom Series HD PowerStroke Cylinder Heads

Fleece Performance Freedom Series HD Cylinder Heads are a heavy duty upgrade engineered to eliminate the known weaknesses of factory castings and deliver long term reliability for high stress diesel applications. Built from a brand new, high tensile strength alloy casting, this head features increased wall thickness and added material in critical areas to withstand the demands of daily driving, towing, and higher cylinder pressures. Each unit comes fully assembled and ready to install with a complete upgraded valvetrain, including stainless steel and Inconel valves, new guides, springs, retainers, and seals, along with hardened, oversized tungsten alloy valve seats for exceptional wear resistance and stability. Fleece's exclusive single piece hoop style O ring design provides superior combustion sealing compared to traditional seamed stainless wire, helping prevent head gasket failures under load. Fleece Performance Freedom Series HD cylinder heads are a purpose built solution for owners seeking maximum durability, reduced downtime, and confidence in demanding diesel performance applications.

Not Yet Reviewed

$1,599.00

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!

4.1 out of 5 stars ( 21 )

$1,539.99

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$1,999.99

March Performance Sport Track Ultra All-Inclusive Chevy Serpentine Pulley Kits

Rubber V-belts were first introduced into automobiles back in 1917—and it took over 60 years to find a suitable replacement. March Performance Sport Track Ultra all-inclusive Chevy serpentine pulley kits are the perfect upgrade for lower performing V-belt pulleys. Serpentine belts are more efficient, thicker, reduce slippage, and last longer—and since they use just one tensioner, all the components can be solidly mounted to the engine. These kits include a unique reusable belt tensioner tool which allows you to easily make adjustments, then remove and store the tool till needed. March uses precision CNC construction with 6061-T6 aluminum for a precise fit and solid strength, along with high-quality components and brackets; all mounting hardware is included. There are many advantages to serpentine belts, and with the incredible fit, finish, and construction of March Performance Sport Track Ultra all-inclusive Chevy serpentine pulley kits, you'll get performance and style all in one.

4.33 out of 5 stars ( 3 )

$1,626.99

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$1,953.99

Chevrolet Performance LSX Cylinder Heads

Great cylinder head airflow is yours with Chevrolet Performance LSX cylinder heads. With power-building attributes, these aluminum heads are manufactured from 319-T5 aluminum alloy and assembled with premium lightweight hollow-stem valves, sodium-filled exhaust valves and--on some models--titanium intake valves. Ensure maximum airflow and exceptional performance with Chevrolet Performance LSX cylinder heads.

Not Yet Reviewed

$1,810.10

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$1,824.30