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2003 Engines & Components
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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
( 13 )
$899.99
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
( 75 )
$769.99
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$799.99
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!
( 21 )
$764.99
Summit Racing™ Pro SBC LS Firing Order Hydraulic Roller Cam and Lifter Kits
Summit Racing™ Pro SBC LS firing order hydraulic roller retrofit cams are available in seven stages--from a small smooth idle cam capable of towing, to a big duration stomper that's ready to go bracket racing. Utilizing the LS firing order on a traditional small block Chevy improves the engine in several ways, including exhaust sound and harmonic improvements. These kits include a premium camshaft and drop-in link bar style hydraulic roller lifters. Best of all: these Pro SBC LS firing order hydraulic roller retrofit cams are precision-ground in the USA on USA billets! Order the cam recommended or your application.
( 2 )
$941.83
Cam Motion Lifters
Cam Motion lifters are available to fit your desired level of performance and budget. From economical stock replacements to their High Performance, Racing, and Premium lines of lifters, Cam Motion covers many applications. Their Premium hydraulic roller lifters feature cold-forged steel construction, precision-ground needle roller bearings and extra-long pistons, precision oil metering, and high-flow, quick-reacting check valves. Cam Motion lifters are available in factory tray/retainer-styles and tie bar-styles.
( 8 )
$766.32
Trick Flow® Track Max® Hydraulic Roller Camshafts for Ford 4.6L/5.4L 2V
Trick Flow® Track Max® hydraulic roller camshafts for Ford 4.6L/5.4L 2V modular engines are designed and dyno-tested to ensure maximum performance. These camshafts are manufactured from premium blank cores that are heat-treated to the proper hardness. They're precision-ground to exacting tolerances to deliver enhanced power and proven Trick Flow® performance throughout the engine's powerband.
( 2 )
$999.99
BTR Connecting Rods
BTR connecting rods are state-of-the-art 4340 H-beam rods for your build. They feature heat-treated, stress relieved, and shot peened bodies with bronze bushed pin bores, and the cap and rod are serialized at the parting line to ensure proper mating after disassembly. BTR inspects them for bearing housing and pin bore diameter, bend/twist, and C/L length. Additional features and benefits: * They are pre-torqued with high-pressure lube and ARP 2000 bolts * Sets of 8 are matched within 2 grams overall * The rods weigh in at approximately 665 grams * Laser marked on the beam with the BTR logo * Rods are individually bagged and sealed
( 2 )
$759.99
COMP Cams Short Travel XD Hydraulic Roller Lifters
COMP Cams short travel XD hydraulic roller lifters offer the advantages of both light pre-load and reduced oil volume, producing the most stable and highest-revving hydraulic lifter available. The XD versions feature heavy-duty tool steel pushrod seats. This adds strength and durability in extreme-duty applications, such as turbo drag cars and offshore powerboats. Certain engines respond better to a light lifter pre-load because it recovers more quickly from any bad harmonics in the valvetrain. Others work better with a heavy pre-load because oil volume is reduced under the plunger, which increases lifter stiffness. Now you have the best of both—with COMP Cams short travel XD hydraulic roller lifters. Order the model designed for your vehicle and engine application.
( 2 )
$969.95
Manley Steel H-Beam Connecting Rods
Manley steel H-beam connecting rods are made from forged 4340 steel alloy. They're packed full of performance features, such as a compact uniform-grain structure for ultimate strength, full machining, stress relieving, and magnafluxing. The wrist pin and big end bores are honed to a +/-.0002 in. tolerance, and the wrist pins get a bronze alloy bushing. These units include cap screw ARP 8740 alloy rod bolts, and each rod set is weight-matched to within 2 grams. Available individually or in a set, order the model recommended for your vehicle year/make and engine application.
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$796.38
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$977.04
Billet Specialties LS Valve Cover Conversion Kits
Billet Specialties LS valve cover conversion kits add classic style to modern performance. These kits allow the use of perimeter-style small block or big block Chevrolet valve covers on your LS motor, while hiding the coils underneath for a clean, classic look. The cover conversions feature recessed wire channels to drop the wires where you need them for ease of installation. Order the kit recommended for your application. Features also include: * Precision-machined from 6061-T6 billet aluminum * Works with the large LS3 coils (AC Delco D514A) * Retains the factory LS gasket for a leak-free seal * Hidden oil fill cap—on each side for ease of access * Stainless steel hardware included
( 1 )
$756.95
Clearance
Summit Racing™ Forged Crankshafts
Summit Racing™ forged crankshafts offer maximum strength and the best value for your dollar! Our crankshafts are non-twist forged from certified 4340 steel. They are put through several stages of heat-treatment, and then stress-relieved and shot-peened to provide the strength and reliability you demand for your high performance application. Each journal is micro-polished and a .125 in. radius is used for increased strength. Summit Racing™ forged crankshafts help you get the most in value and performance.
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$1,019.99
$829.50
Summit Racing™ Performance Connecting Rods
Summit Racing™ Performance 4340 forged steel connecting rods come in a variety of applications and options. From a light rod street-strip cruiser to a beefy rod for a 1500 hp big block, you will find just the rod for your combination. As always, Summit Racing™ connecting rods are packed with great features at the best prices. Options and features: * Chevy, Ford, Chrysler, and Pontiac * Big and small blocks * Multiple lengths * H-beams and I-beams * Through-bolts to cap-screws * Press-fit to full-floating * Multiple grades of rod bolts from 8740 through L-19
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$769.99
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$799.99
On Sale
Holley Aluminum LS Valve Covers
Holley aluminum LS valve covers will give your Chevrolet LS Series engines a totally new look. Manufactured from cast aluminum, they come in four different finishes, and feature a billet aluminum oil fill cap. Some valve covers in this series eliminate the need for the factory ignition coil bracket. Instead, the coils bolt directly to the valve covers for a nice angled look! Holley aluminum LS valve covers reuse the factory gaskets and bolts, will work with .750 in. lift camshafts using stock-style rocker arms, and fit all ignition coils with 72mm spacing.
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$799.95
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$870.95
COMP Cams Xtreme Energy Modular 2-Valve Camshafts
COMP Cams Xtreme Energy modular 2-valve camshafts are specifically created for high-demanding, overhead-camshaft engine configurations. From stock replacements to ultimate performance, there is an Xtreme Energy cam to meet your performance goals.
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$838.95
Scat Pro Sport H-Beam Connecting Rods
These H-beam connecting rods are the strongest Scat connecting rods available. These Scat H-beam connecting rods are perfect for supercharged and nitrous applications. These rods incorporate a special doweled cap for specific cap-to-rod alignment and are profiled with extra clearance for stroker applications.
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$765.99
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$944.99
Eagle Forged 4140 Steel Crankshafts
They're back! Eagle forged 4140 steel crankshafts fill the gap for more needed strength without the big price tag! Recommended for use up to 1,000 hp, these Eagle 4140 cranks will handle the performance demands of your competition engine, keep you on budget, and put a smile on your face! When you need more than a cast crank but don't want to step up to the more expensive 4340 steel model, Eagle forged 4140 steel crankshafts offer a lot of what you need for less dollars.
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$829.99
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$854.99
Wiseco Professional Series Piston Kits
Wiseco pulled out all of the stops with their Professional Series piston kits. These pistons accommodate the reluctor ring on stroker cranks without having to notch the pin bosses. Offset pins like OE and skirt shapes are specifically designed for street applications, making these the best piston kits available. Successfully tested in the highest horsepower applications, the Professional Series kits also utilize ArmorGlide skirt coating—which is the result of testing, development, and benchmarking through Wiseco's in-house dyno program. The outcome is minimized friction, maximized horsepower, and improved wear resistance. Not only is ArmorGlide a high-tech lubricant that reduces friction, but it also allows the piston to be fitted tighter within the bore than a non-coated piston. Anti-detonation and pressure seal grooves give you a better ring seal, reducing noise from the piston rock and delivering better performance. Order the pistons tailored for your application.
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$944.99
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$979.99
Chevrolet Performance L92 Cylinder Heads
Chevrolet Performance L92 cylinder heads are production-style aluminum heads that provide great airflow and exceptional performance. Features include: * Manufactured from 319-T5 aluminum alloy * Aluminum performance head * Fits any LS family engine with 4.000 in. bore or larger * Solid stem intake and exhaust valves * .510 in. Max Lift valve springs * As-cast L92-style intake ports * D-shaped exhaust ports * As-cast combustion chambers * Angled spark plugs (14mm; 5/8 in. hex; 3/4 in. reach; taper-seat plugs) * 15 degree valve angle * Bolt-down-type rocker arms * Center-bolt valve cover hold-downs
Not Yet Reviewed
$999.99
On Sale
COMP Cams LST Series Solid Roller Camshafts
COMP Cams LST Series solid roller camshafts deliver "Low Shock Technology." These LST cams feature lobe profiles designed to maximize horsepower, while improving stability at higher rpm. They're also easier on the valve springs, enhancing durability and reducing load loss. For maximum horsepower with either stock or aftermarket pistons (choose the model suited to your application), COMP Cams LST Series solid roller camshafts are an excellent option for your build.
Not Yet Reviewed
$855.95
COMP Cams Sportsman Solid Roller Lifters
COMP Cams Sportsman solid roller lifters feature premium-quality, high-value components designed for sportsman and professional racing, along with high-end street machines. They're available in both needle-bearing and bushing configurations. Each design features two pressurized EDM oil feeds, as well as an edge-orifice feed to the wheel. This delivers a more reliable oil feed than most competing options. COMP Cams Sportsman solid roller lifters are also designed with a shallower oil band than competitors' versions for increased strength and rigidity, while internal machining helps to reduce weight. The body utilizes a skirted wheel that strengthens the lifter ears, and the skirt also provides more contact area with the lifter bore for further lifter stabilization. In addition, staked axles eliminate clips and provide robust axle retention. This feature increases the stiffness of the lifter ears and helps to prevent the ears from spreading. The COMP Cams Sportsman solid roller lifters are built from 8620 premium steel for increased strength and wear resistance and they feature a captured, stainless steel link bar design. The lifters also utilize a tapered and slotted link bar tower for reduced weight and improved aesthetics. Choose the size and options tailored for your engine application.
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$888.95
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$941.95
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
( 34 )
$870.95
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$999.95
Manley Platinum Series Pistons
Manley Platinum Series pistons are designed to provide trouble-free installation, excellent reliability, and maximum horsepower for your application. Available in 2618 and 4032 forgings, they provide the optimum balance between strength and weight, with no grain-interrupting internal milling. The Platinum Series pistons' 2618 alloy offers maximum high-temperature strength and fatigue resistance, while the 4032 alloy is ideal for moderate-horsepower street applications. Order the style and size pistons designed for your vehicle and engine.
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$785.49
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$866.78
COMP Cams Thumpr LS Camshaft Packages
COMP Cams Thumpr LS camshaft packages come as a complete valvetrain parts package that is matched for specific LS applications and desired performance. COMP Cams engineers have spent countless hours testing and creating valve train component combinations that are perfectly matched for maximum horsepower and dependability, as well as creating that wildly popular Thumpr sound in GM LS applications. Thumpr camshaft packages can add anywhere from 60 to 110 hp (depending on the application). COMP Cams Thumpr LS camshaft packages include: * Thumpr LS camshaft * Pushrods * Valve springs * Retainers * Valve locks * Spring seats * Valve seats
Not Yet Reviewed
$865.95
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.
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$905.99
