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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.
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$2,115.95
Rely on Jesel Pro Aluminum Series shaft rocker arms to move you into the winner's circle. Their custom blended 7000 Series aluminum alloy allows for an extremely durable and lightweight valvetrain assembly with a tensile strength at 300 degrees to far exceed that of less expense, industry-standard 2024 alloys. Jesel Pro Series rocker arms have profiled rocker tails and clipped-pin nose rollers, and they are shot-peened for increased resistance to fatigue failures. They are offered in standard slot, Mohawk beam, and solid body styles, as well as different ratios individually and in sets. Features of Jesel Pro Aluminum shaft-mounted rockers: * Longer rocker arms provide higher rocker ratios * Proper travel arc geometry * Enough rocker-to-valve spring clearance to run big race springs * CNC-machined aluminum rockers are extra rigid to insure true rocker ratio * Shaft mounting reduces reciprocating mass for high rpm use * Easier access to valve springs, lash caps, retainers and locks * Longer valve spring life
Not Yet Reviewed
$2,265.00
For those of you that feel most confident running a steel-based valve train, look no further than the collection of Crower stainless steel shaft-mounted rocker arm systems. Every configuration has been rigorously scrutinized to offer extreme rigidity and accuracy while optimizing the moment of inertia phenomena condition. Crower engineers made ease of installation and maintenance a top priority--so you'll never waste a moment when time is critical at the track. These stainless steel shaft rocker systems are a perennial favorite of dirt late models and marine endurance competitors. Sustained high temperatures have little effect on the strength properties of stainless steel so components made from this material typically have a longer life expectancy than similar components made from aluminum. All Crower shaft mount rocker arms are available with Crower's needle bearing roller tip option. They greatly reduce friction for added horsepower and decreased valve guide and valve stem wear. The lighter tips deliver greater valve control for increased rpm and improve valve spring longevity by decreasing heat compared to traditional non-needle designs.
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$2,375.99
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$2,886.99
Looking for big LS engine power at an affordable price? Summit Racing™ remanufactured 5.3L LS long block crate engines are rated at 450 HP and 420 lbs.-ft. torque! This engine will give you the performance and drivability you have been searching for at a price you can afford. It can be a performance upgrade for 99-07 Chevy trucks, or an engine swap into your project vehicle. You will save time and money by leaving the machine-work and assembly to us. Just bolt on your accessories and drop it in. These engines are machined and assembled for us by the guys at ATK, and backed with a 2-year unlimited mile warranty for peace of mind. Technical specifications: * Horsepower: 450+ * Torque: 420+ * Block: Seasoned OE LM7/5.3L iron * Bore/stroke: 3.800-3.820 in. x 3.622 in. * Year range: 1999-2007 * Displacement: 323 C.I.D. * Crankshaft: OEM GM 3.622 in. stroke internally balanced 24-tooth reluctor wheel * Connecting Rods: OE GM forged powder metal 6.093 in. * Pistons: Hypereutectic flat top * Piston rings: Moly * Compression ratio: 10:1 compression * Camshaft: Summit Racing Pro LS Roller * Camshaft specifications: Lift- 550/550, Duration @.050- 222/232 * Camshaft bearings: Installed and clocked to OEM position * Cylinder heads: #799 or #243 OE aluminum 64cc 2.00 in./1.55 in. valves * Freeze plugs: Brass installed and sealed * Rocker arms: OE powdered metal 1.7 ratio * Oil Galley plugs: Installed and sealed
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$3,849.99
Are you still confused as to which parts you need to get the performance you want? Quit wasting time and second-guessing yourself. Trick Flow® has already done the work for you with GenX® Top-End Engine kits for GM LS. Designed and dyno-tested to deliver the performance you crave for less than purchasing the parts separately, these kits save time and money! What's in these GenX® Top-End Engine kits? * A pair of Trick Flow® GenX® street/strip cylinder heads * A specially matched hydraulic roller cam * Some kits contain roller rocker arms * Pushrods * Head gaskets * Head bolts * Exhaust gaskets * Balancer bolt
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$3,948.91
Get more brawn for your Chevy truck with GenX® Top-End engine kits from the power people at Trick Flow®. The engineers at Trick Flow® have been hard at work tweaking these LS engine kits so you get dyno-proven horsepower with no guesswork! These kits feature GenX® aluminum cylinder heads with fully CNC-machined and bowl-blended combustion chambers and CNC-ported intake and exhaust runners for maximum airflow. They also offer a heat-treated and precision-ground Track Max® hydraulic roller tappet camshaft for enhanced power, as well as Trick Flow® one-piece chromoly pushrods with precision-drilled and chamfered oil holes. These kits also include shaft mount roller rockers, bolts, and gaskets. Matched for more muscle, the components in these Top-End kits can add 50-75 hp to your LS-powered truck. Get bolt-on, proven Trick Flow® performance with GenX® Top-End engine kits for your GM LS truck.
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$3,893.17
ATK High Performance Chevy LQ4 6.0L 460 hp long block crate engines lay down impressive power that can be run with factory fuel injection or retrofitted with a carburetor. They're hand-built, balanced, and blueprinted using top-quality parts. Don't waste time trying to salvage a high-mileage short block when you can get a fresh mill that's ready for your choice of components to make it your own. ATK Chevy LQ4 6.0L 460 hp long block crate engines include: * Handpicked and seasoned 6-bolt main block * Aligned and honed main bores * OE steel crankshaft * 3.622 in. stroke * OE connecting rods * Hypereutectic dish top pistons * Aluminum cylinder heads * Hydraulic roller camshaft * Timing chain and gear set * 1.7:1 ratio rocker arms * 24-tooth reluctor
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$5,049.99
With ATK High Performance Chevy LM7 5.3L 385 hp long block crate engines expect big mid to upper end power and a noticeable idle. They were designed to be performance upgrades for a 1999-2007 Chevy truck LM7 or an LS swap in a hot rod. Technical specifications include: * Horsepower: 385+ * Torque: 390+ * Block: GM 5.3L iron LM7 * Bore/stroke: Up to 3.809 x 3.622 * Year range: 1999-2007 * Displacement: 323 c.i.d. * Crankshaft: OEM GM 3.622 in. stroke internally balanced 24 tooth reluctor wheel .857 in. flange * Connecting rods: OE GM forged powder metal 6.093 in. stock bolts * Pistons: Hypereutectic dish * Piston rings: Moly rings * Compression ratio: 9.5:1 compression * Camshaft: Hydraulic roller * Camshaft specifications: Custom grind * Camshaft bearings: Installed and clocked to OEM position * Cylinder heads: OE aluminum 61.15cc 1.89/1.55 * Freeze plugs: Brass installed and sealed * Rocker arms: OE powdered metal 1.7 ratio * Oil Galley plugs: Installed and sealed * Weight: 385
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$4,189.99
Great cylinder head airflow has been a key enabler of the LS-Series' exceptional performance. Chevrolet Performance delivers those power-building attributes to you with a range of production-style aluminum heads. From the LS6 heads for smaller-displacement engines, to LS7 style heads for 427 in. and-larger combinations, these bare cast aluminum heads benefit from extensive research and development—ensuring maximum airflow without compromises. In fact, many professional builders use these heads as straight bolt-ons with no further machining. The engine cylinder heads are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These replacements are the true OE parts installed during the production of or validated by GM for select vehicles. LS7 CNC-ported cylinder head assembly notes: * 356-T6 aluminum head * Fully CNC'd ports and chambers * LS7 rectangle port design * Minimum 4.100 in. bore * 270cc CNC'd intake ports, 85cc CNC'd exhaust ports * 70cc CNC'd combustion chambers * Capable of over 600 hp Aluminum LS family head technical notes: * Manufactured from 319-T5 aluminum alloy * High-efficiency combustion chambers * Symmetrical intake and exhaust ports * Angled spark plugs (14mm; 5/8 in. hex; 3/4 in. reach; taper-seat plugs) * 15 degree valve angle (except C5R and LS7) * Bolt-down-type rocker arms (except LSX-DR, LSX-CT) * Centerbolt valve cover hold-downs * Fits Gen III and Gen IV small blocks only NOTE: Chevrolet Performance heads will not fit 4.8L and 5.3L engines, due to their smaller bore sizes.
Not Yet Reviewed
$3,234.74
On Sale
AFR 260cc LS3 Mongoose cylinder heads are 100 percent 5-axis, CNC-ported, and feature titanium retainers, A356 aluminum castings, and Pac Racing springs. These CARB certified heads require 4.000 in. or larger bore applications on up through 454 cu. in. engines operating at or below 7,000 rpm—and flow over 380 cfm at 0.700 in. lift and are designed primarily for street and strip applications. Other structural features include Air Flow Research's trademark 3/4 in. thick head deck, reinforced rocker stud bosses, and thick wall runners provide unparalleled durability. Use of AFR stud girdles and full roller rocker arms are required. When it comes to building power, start with these AFR 260cc LS3 Mongoose cylinder heads.
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$3,011.40
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$3,490.20
$2,860.45
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$3,315.50
Don't waste time trying to figure out which parts you need to get the performance you want--Trick Flow® has already done the work for you! These GenX® Top-End engine kits for GM LS1 are designed and dyno-tested to deliver the performance you want for less than the cost of purchasing the parts separately. Each kit includes: * Pair of Trick Flow® GenX® street/strip cylinder heads * Specially matched hydraulic roller cam * Roller rocker arms * Pushrods * Head gaskets * Head bolts * Exhaust gaskets * Balancer bolt
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$4,068.76
Don't waste time trying to figure out which parts you need to get the performance you want--Trick Flow® has already done the work for you! These GenX® Top-End engine kits for GM LS1 are designed and dyno-tested to deliver the performance you want for less than the cost of purchasing the parts separately. Each kit includes: * Pair of Trick Flow® GenX® street/strip cylinder heads * Specially matched hydraulic roller cam * Roller rocker arms * Pushrods * Head gaskets * Head bolts * Exhaust gaskets * Balancer bolt
Not Yet Reviewed
$4,068.76
Don't waste time trying to figure out which parts you need to get the performance you want--Trick Flow® has already done the work for you! These GenX® Top-End engine kits for GM LS2 are designed and dyno-tested to deliver the performance you want for less than the cost of purchasing the parts separately. Each kit includes: * Pair of Trick Flow® GenX® street/strip cylinder heads * Specially matched hydraulic roller cam * Roller rocker arms * Pushrods * Head gaskets * Head bolts * Exhaust gaskets * Balancer bolt
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$4,127.30
Don't waste time trying to figure out which parts you need to get the performance you want--Trick Flow® has already done the work for you! These GenX® Top-End Engine Kits for GM LS1 are designed and dyno tested to deliver the performance you want for less than purchasing the parts separately. Each kit includes a pair of Trick Flow® GenX® street/strip cylinder heads, a specially matched hydraulic roller cam, roller rocker arms, pushrods, head gaskets, head bolts, exhaust gaskets, and balancer bolt.
Not Yet Reviewed
$4,068.76
Edelbrock Performer RPM LS3 Top-End kits deliver improved performance in 1,500 to 6,500 rpm street application range. To get great performance out of any engine, all of the components must work together, and for over 30 years, Edelbrock Total Power Packages have solved the parts-matching puzzle. Now, their dyno-matched component Power Package Top-End kits, will get you the best Edelbrock performance in-one-box, under one part number, with "no guesswork" involved. And all of the performance marks are real results from engine dynamometer tests on factory short blocks. Edelbrock Performer RPM LS3 Top-End kits feature: * Performer RPM intake manifold * E-CNC cylinder heads * Pushrods * Rollin' Thunder hydraulic roller camshafts * Complete bolt kits * Edelbrock gasket set * MSD ignition control module Installation notes: * Proper installation is the responsibility of the installer. Improper installation will void your warranty and may result in poor performance and engine or vehicle damage. * Use RTV sealant to properly seal end seals--DO NOT USE end seals gaskets * Sealant must be used on intake bolt threads if the threads extend into lifter valley or coolant passage * NPT/pipe thread fittings require the use of PTFE tape or paste on threads to ensure proper seal * DO NOT overtighten NPT/pipe fittings, this may cause the aluminum to crack around the fitting boss. NPT/pipe thread is a tapered thread.
Not Yet Reviewed
$5,494.95
On Sale
Maximize 4.000 in. and larger bore combinations with AFR 245cc LSX Mongoose Strip cylinder heads. These aluminum cylinder heads feature 100 percent CNC-ported chambers, intake, and exhaust ports, and use A356 aluminum castings. They're also equipped with AFR's 3/4 in. thick deck and thicker port and combustion surfaces. designed for the LSX platform, these max effort cathedral port heads are recommended for race applications or radical "Pro Street" builds with displacements up to 454 cu. in., operating at or below 6800 rpm. Run AFR 245cc LSX Mongoose Strip cylinder heads—and get ready to devour a Cobra, Viper, or any other venomous contestant!
Not Yet Reviewed
$3,460.80
$3,287.95
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