Availability
Mast Motorsports offers Factory Mast cylinder heads for a variety of Chevrolet small block LS and LT engines from the early 2000s and up. The aluminum rectangular heads are available bare or assembled in a wide range of combustion chamber volumes, intake and exhaust valve sizes, and other options. Combustion chambers and runners are CNC-machined for precision and performance; and valve guides are bronze or powdered metal material. Examine the specs and select the cylinder heads recommended for your application.
Not Yet Reviewed
$2,399.00
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$4,100.00
Dart SHP Special High Performance LS Next Pro cast iron bare blocks continue the evolution of their LS Next platform with superior strength. With full skirt designs, priority oiling systems, and other excellent features, these SHP LS Next Pro blocks are the perfect upgrades for your factory LS blocks, as well as ideal starting points for drag racers, circle track competitors, off-roaders, and high performance marine enthusiasts. Dart SHP LS Next Pro cast iron bare blocks feature: * Superior strength 220 BHN cast iron * Steel 4-bolt main caps with upgraded ARP main studs * Lifter oil crossover with restrictor provision * 6-bolt per cylinder capability * 4.000 in. up to 4.185 in. bore * Factory oil filter provision * 8-counterweight machining * Full skirt design * Priority main oiling * Siamese cylinder bores * Thick decks ensure reliable head gasket seal
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$4,699.99
These Summit Racing™ 350 small block Chevys are 100% new, including their blocks! No remanufactured parts are used to build these engines. They are built with new Vortec head castings that are not prone to cracking like the factory ones, and produce a reliable 300+ horsepower/375+ lbs.-ft. torque, providing a mild muscle car tone. These engines are assembled for us by the guys at ATK, and backed with their 2-year unlimited mile warranty for peace of mind.
Not Yet Reviewed
$4,499.99
On Sale
Holley's Ford 7.3L Godzilla high-mount accessory drive complete kits with their patent-pending technology, integrates timing cover, oil pump, oil pan, water pump, alternator, and the option for A/C and/or P/S, all in one streamlined system. Plus, they are compatible with both factory crank pulleys and aftermarket damper/pulleys. Positioning an engine swap correctly is crucial, ensuring it aligns with the vehicle's original engine's crankshaft centerline. Holley's innovative solution achieves just that, allowing proper engine placement while providing clearance for a stock Fox Body hood (when used with a low-profile intake). Our system replaces Ford's sump-mounted oil pump with a high-capacity gerotor pump positioned behind the timing cover, gaining crucial crossmember and ground clearance. To ensure reliability, they incorporated a proven pump design utilizing Melling sourced components that mimics the factory pressure level. Unlike most pumps that require removing the oil pan to change the pressure spring, Holley introduced a first-of-its-kind external access port, allowing hassle-free spring switching. Moreover, their cast aluminum oil pan features a performance-minded windage tray and baffle, guaranteeing proper oil pickup during high-G maneuvers. For extreme situations, such as drag racing, upgrade to the optional race baffle to always ensure proper oil delivery. These accessory drive systems offer flexible configuration options to meet various needs, making Holley's Godzilla high-mount accessory drive kits the ultimate solutions for engine swaps, offering unparalleled functionality, adaptability, and ease of installation. Choose from natural as-cast aluminum or black finish.
Not Yet Reviewed
$2,599.95
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$3,199.95
$2,338.95
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$2,878.95
AFR 190cc Vortec Eliminator Street cylinder heads have exceptional flow characteristics, are 50-state street legal, and the preferred choice over rebuilt factory heads. They feature 100 percent CNC-ported chambers, A356 aluminum castings, and high-quality components. These heads are recommended for street, strip, and towing engines operating up to 6,000 rpm from 350 to 383 cu. in. For performance, strength, and ease, install AFR 190cc Vortec Eliminator Street cylinder heads. Additional features include: * 3/4 in. extra-thick head deck * 2.020 in. intake and 1.600 in. exhaust valves * Center and perimeter valve cover bolt patterns * 0.100 in. raised exhaust port * Not compatible with self-aligning rocker arms
( 4 )
$2,391.90
Clearance
VEGE remanufactured long block crate engines are an excellent foundation for budget-minded builds. These premium-quality refurbished engines are drop-in replacements for a wide range of stock vehicles—and can be retrofitted into additional applications. Each engine is reverse-engineered to ensure that any original defects are removed. Certified technicians recondition the long blocks to factory specifications, replacing wearable parts or machining them back to OE standards. The engines are thoroughly tested and calibrated to deliver maximum performance and long-term durability. Order the VEGE remanufactured crate engine recommended for your vehicle.
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$4,856.99
$2,003.99
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$4,987.99
The perfect foundation for your Boss engine--Ford Performance Parts Boss 302 engine blocks! They're built stronger than the originals to make your high performance build a success. Designed as replacements for the legendary Boss 302 and Boss 351 blocks, they use the latest technology and manufacturing techniques. Cast from diesel-grade iron with siamesed bores, thick cylinder walls and decks, Boss block strength is far superior to any Ford production block. Boss 302 blocks are available in standard and Big Bore versions that support engine sizes up to 363 c.i.d. Proven around the world, both on the track and on the street; all Ford Performance Boss 302 blocks are cast and machined to the highest industry standards in the USA. Features include: * Big Bore version features 4.125 in. bore capacity, finished at 4.115 in. rough bore * Standard bore version is finished at 3.990 to 3.995 in. rough bore with 4.125 in. bore capacity * 8.2 in. deck height, finished at 8.200 in. plus .010 to .015 in. * Optimized cylinder wall length for stroker applications up to 3.5 in. with no grinding or clearancing (depends on crank/rod manufacturer) * Splayed 4-bolt mains on 2, 3, 4, main caps * 2-bolt main on first and fifth main caps * Main bearing bores finished to low limit * Finished lifter bores * Machined to accept factory roller lifter guides and lifter guide retainer * Fits factory 1979-95 Mustang oil pan with custom oil pickup tube, part number: M-6622-BOSS302 * NASCAR inspired front oil feed on both lifter galleys * Revised cooling system passageways * Increased bulkhead material * Threaded core and galley plugs (straight thread port plugs with O-ring) * Require special length 1/2 in. head bolts M-6065-BOSS or head studs M-6014-BOSS recommended with M-6049-X306/307/Z304DA heads * Designed for M-6049-X306//X307/C3/D3/Z304DA cylinder heads * Not designed for production 302/351W or M-6049-Y302/Y303/X302/X303/X304/X305 cylinder heads * Uses common O.D. cam bearings M-6261-J351/R351 * Unique cam plug M-6026-S351 included * M-6051-S331 or M-6051-CP331 head gasket recommended * Uses stock-type timing cover (M-6059-D351 recommended; includes fuel pump provision) * Retains clutch cross shaft pivot hole * Original-style oil filter location * Original motor mount boss locations * Original bell housing pattern * Approximate weights: Big Bore 163 lbs.; standard bore 175 lbs.
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$2,265.99
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$2,445.99
Bring your old car or truck back to life with ATK High Performance Ford 351W 300 hp Stage 1 long block crate engines. These engines are built by hand by true craftsmen to ensure a strong-running, reliable engine for your daily driver or hot rod. These engines come ready for you to install your choice of finishing touches, so you can get back out on the road. More product features, items, and specifications include: * Seasoned OE-style roller block (1987-95; 300 hp, 377 torque; 4.060 in. bore x 3.500 in. stroke) * OEM E7TE cast iron cylinder heads (1.77 in. intake/1.46 in. exhaust) * OE-style connecting rods and crankshaft (one-piece rear main seal; 28 oz. balance) * Hypereutectic pistons (9.1:1 compression ratio) * Hydraulic roller camshaft Camshaft ---220/224 Intake/Exhaust Duration at 0.050 in. Lift ---0.512 in. /0.512 in. Intake/Exhaust Valve Lift with Factory Rocker Arm Ratio ---112 degrees LSA (Lobe Separation Angle) * Moly-style piston rings * Timing cover * Oil pan (rear sump truck) and oil pump (Melling standard volume) * Stamped steel 1.6 ratio rocker arms
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$3,841.99
VEGE Chevrolet 350 C.I.D. Vortec remanufactured long block crate engines are reverse engineered to ensure that any original defects are removed, saving you time and money. Each crate engine can produce 290+ hp and 375+ ft.-lbs. of torque when it's equipped with a high-rise dual plane intake and 650 cfm carburetor. Start your budget-minded build with an excellent foundation--a VEGE Chevrolet 350 c.i.d. Vortec remanufactured long block crate engine. Engine specifications: * Block: Seasoned GM 350 c.i.d. block -- 2-bolt main -- One-piece rear seal * Bore/stroke: Up to 4.060 in. x 3.480 in. * Displacement (cu.in): 350 c.i.d. * Crankshaft: OE cast * Rods: OE reconditioned PM rods * Pistons: Hypereutectic 9.4:1 compression * Rings: Moly * Camshaft: Hydraulic roller * Cam specs: -- 191/194 at 50 -- .414 intake/.428 exhaust -- 111 LSA * Cylinder heads: -- OE Vortec 64cc -- 1.94 intake/1.50 exhaust * Rocker arms: Stamped steel 1.5 ratio * Oil pan: Stock 5 qt. * Valve covers: Chrome center bolt * Timing cover: Chrome Note: Can work with factory Vortec system or used as a retrofit with Vortec dual plane intake and carburetor.
Not Yet Reviewed
$3,099.99
BluePrint Engines 50 state legal long blocks are designed and manufactured to factory specs for specified vehicles. They're built using tighter machining tolerances, higher quality components, and finer balancing of the rotating assembly to make them better than the original—while still meeting the description of a "replacement" engine. From Ford Windsors to Chevy big and small blocks, these assembled crate engines are available for a wide range of vehicles spanning a half-century. Select the recommended fitment, specifications, and options needed for your swap.
Not Yet Reviewed
$4,999.00
On Sale
COMP Cams XFI VSR Ford 5.0 Modular 4V camshafts offer billet steel strength and performance for maximum power on your supercharged/turbocharged street/strip application. These XFI Series, valve spring required camshafts are specifically engineered and ready to unlock the potential power of your Ford Coyote 5.0L DOHC modular 4V engine. They are available in two stages of performance. Features: * Stage 1: Optimized with higher lift for specific spring kits, allowing more rpm and added exhaust for forced induction * Stage 2: Very close to a competitive NHRA Factory Shootout or race turbo grind, but mild enough for limited street use
Not Yet Reviewed
$2,046.95
S&S Cycle offers 129 in. power packages with chain drive cam for a variety of Harley-Davidson© street bikes from 2017 and up. These packages are the ideal combination of performance and savings designed to transform your engine from mild to wild. They combine S&S's biggest big bore cylinders with matched 550 cam/cam-plate/oil pump and everything else a high performance cam chest needs to make big, reliable horsepower. Transform your 107 in. into a 129 in. monster. Additional details: * Available with 129 in. Big Bore pistons/cylinders * 550 lift cam for the perfect combination of horsepower and torque * Works with stock crankcases * Powdercoat finish matched to factory * MLS (multi-layered steel) head gaskets * Includes tappets, tappet cuffs, and high lift springs * Includes 129 cam cover badge
Not Yet Reviewed
$3,359.95
Edelbrock E-Force 8-rib belt drive upgrade kits are intended to upgrade the factory Ford 5.0L Coyote 6-rib belt drive system to an 8-rib to help reduce belt slip encountered in high boost applications with a smaller pulley. It is an ideal upgrade for an E-Force equipped Mustang GT, F-150, or crate engine. Each kit includes a water pump pulley, alternator pulley, harmonic damper, all necessary idler pulleys and tensioners, and hardware. E-Force 8-rib supercharger pulleys are sold separately and are available in sizes from 2.625 in. up to 3.250 in.
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$2,369.95
On Sale
World Products Motown blocks are a great starting point for your performance engine. They feature many improvements over factory castings, including thicker cylinder walls, nodular iron main caps, and special bosses for front-feed oil systems. They will clear strokes up to 4.00 in. without clearancing and are available in different main and bore sizes to suit your needs.
( 1 )
$4,736.26
$3,781.95
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$4,262.63
Give your car, truck, or hot rod some extra motivation with ATK High Performance Ford 351W 385 hp Stage 1 long block crate engines. These engines are hand-built, balanced, and dyno-proven to ensure they are going to get you down the road, in a hurry and reliably. These engines come ready to be finished with your choice of factory dressings or aftermarket parts. Breathe some new life into your ride with these ATK High Performance Ford 351W 385 hp Stage 1 crate engines. ATK Stage 1 long block crate engines include: * Handpicked, remanufactured blocks * Edelbrock aluminum cylinder heads * OE crank and rods * Hypereutectic pistons * Hydraulic roller camshaft * Cam lift- .512 int./.512 exhaust * Cam duration at 0.50- 220 int./224 exhaust * 9.5:1 compression * Valve covers * Timing cover * Oil pan, pump, and pickup tube
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$4,958.99
Fleece Performance introduces the Freedom Series cylinder heads for 6.6L Duramax engines, found in many Chevy and GMC trucks from 2001 and up. Each cylinder head is manufactured in-house at the state-of-the-art Freedom Racing Engine Shop and is guaranteed to meet or exceed factory specifications. All heads are meticulously inspected, pressure and leak tested, and are equipped with new valve guides, springs, and valve seals. Perfect for the daily driver or towing application, these heads utilize stock valves with a 45 degree angle on the intake and exhaust ports. Available with new or remanufactured casting.
Not Yet Reviewed
$2,599.00
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$2,949.00
Ford Performance Parts Boss 351 c.i.d. engine blocks are based on Windsor 351 architecture with Cleveland-sized 2.749 in. main bearing journals. Available in two deck heights, 9.2 in. and 9.5 in., they feature 4-bolt main caps and screw-in freeze plugs. Technological improvements, such as splayed main bolts, siamesed bores with engineered coolant cross-drilling, front crossover lifter oiling, and diesel-grade iron with 41,000 psi tensile strength separate Ford Performance Parts Boss 351 c.i.d. engine blocks from both stock and aftermarket blocks. They can accept a maximum stroke of up to 4.250 in., depending on the crankshaft/connecting rod manufacturer, with a maximum bore size topping out at 4.185 in. (sonic check recommended). Features include: * Available in standard and Big Bore versions * Supports displacements up to 460 cubic inches * Splayed 4-bolt main on 2, 3, 4, main caps * 2-bolt mains on 1 and 5 main caps * Main bearing bores finished to low limit * Finished lifter bores * Machined to accept factory roller lifter guides and lifter guide retainer * Revised cooling system passageways * Increased bulkhead material * Threaded core and galley plugs (straight thread port plugs with O-ring) * Requires special length 1/2 in. head bolts M-6065-BOSS or head studs M-6014-BOSS recommended with M-6049-X306/307/Z304DA heads * Designed for M-6049-X306//X307/C3/D3/Z304DA cylinder heads * Not designed for production 302/351W or M-6049-Y302/Y303/X302/X303/X304/X305 cylinder heads * Use common O.D. cam bearings M-6261-J351/R351 * Unique cam plug M-6026-S351 included * Compatible with original 302 and 351W blocks * Designed to use stock type timing cover (M-6059-D351 with fuel pump provision recommended) * Fits factory Mustang oil pan with custom oil pick-up tube M-6622-BOSS302 * Retains clutch cross shaft pivot hole * Original-style oil filter location * Original motor mount boss locations * Original bell housing pattern * 9.2 in. deck height blocks weigh approximately 195 lbs. * 9.5 in. deck height blocks weigh approximately 205 lbs. * Great price and value
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$2,445.99
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$2,644.99
Fleece Performance Freedom Series Cummins cylinder heads are offered in Street, Street-HD, and Performance versions. Each cylinder head is manufactured in Fleece's state-of-the-art cylinder head machine shop and guaranteed to meet or exceed factory specifications. All heads are inspected, pressure checked, decked, painted, and ready for installation. All versions include hardened, oversized press-in valve seats, new valve guide liners, and 11 screw-in freeze plugs to ensure you'll never worry about a coolant leak under the valve cover again! Choose the remanufactured version designed for your Cummins engine. Street and Street-HD versions also feature: * Perfect for a daily driver or heavy-duty towing * Rated for use up to 700 hp * Street: -- New Cummins valve springs * Street-HD -- New heavy-duty Fleece 105# valve springs -- Tool steel retainers Performance versions also feature: * Whether you are sled pulling, drag racing, or just looking for extra power when towing Fleece's Performance heads will get you the power you need * Rated up to 1,100hp * Fire ring the cylinder head (all in the head) * Manley 1.300 in. stainless valves * 105 valve springs and steel retainers * Fire ring gasket kit with multi-layer steel gasket * 4.550 in. diameter rings
Not Yet Reviewed
$2,599.00
Dart's Pro1 Mercury Racing cylinder heads are perfect if you need a little more power, and are true bolt-on replacements patterned on professional competition heads. The intake ports are precision-cast from C355-T61 aerospace aluminum, come available with 310cc, 325cc, or 345cc intake runners, and have the correct exhaust bolt pattern for factory manifolds. The yellow chromate surface treatment inhibits salt and corrosion for marine usage. They are available bare or assembled. Choose the right configuration for your motor and any special parts and considerations. Assembled heads also include Inconel exhaust valves to withstand extended running time and temperatures.
Not Yet Reviewed
$2,815.75
Mast Motorsports offers LT front accessory drive kits for a variety of Chevrolet applications from 2014 and up. Mast combines key OE features and Mast-produced components to make a compact front accessory drive for most LT engines. The kits are available for dry sump and factory wet sump applications. Notes: * OPTIONAL ADD-ON A/C pump and bracket (PN: CA-LTX-302437) * A/C system uses separate belt line and belt * Will not work with LT1 or MSD Atomic Intake Complete kits include: * Water pump * Alternator * OE balancer - Wet Sump * ATI balancer - Dry Sump * Idler tensioner * Idler pulley * Power steering pump and bracket * Belt * All associated bolts and spacers
Not Yet Reviewed
$2,250.00
Edelbrock Victor CNC 12-degree 6-bolt LS7 cylinder heads are specifically designed for maximum effort naturally aspirated and boosted applications. They feature .220 in. raised intake runners and .100 in. raised exhaust ports that provide a better line of sight into the cylinders and allow for an improved short turn. The raised intake runner design fits both stock and aftermarket LS7 intake manifolds and can be used with stock or aftermarket valvetrains. The heads utilize the GM LS 6-bolt design, making them compatible with the GM LSX block and all aftermarket iron or aluminum 6-bolt per cylinder LS race blocks. The design offers increased clamping capacity over the standard factory 4-bolt configuration and improves head gasket sealing, making them ideal for high-compression, naturally aspirated engines and high-boost applications. Edelbrock Victor CNC cylinder heads feature a 12-degree valve angle and fully CNC-machined ports for maximum airflow. CNC-machined runners and chambers, as well as the .220 in. raised intake ports and the valve angle, increase overall flow capability, while a revised water jacket design enhances thermal conductivity and tunability. The manganese bronze valve guides withstand long wear with emphasis placed on holding precision tolerances on valve seat concentricity, allowing the valves to seal securely, eliminating leak down and increasing cylinder pressure during engine operation. Finally, the .700 in. thick deck and .400 in. raised valve cover rail make these heads ideal for maximum horsepower and high valve lift applications. All Edelbrock Victor CNC heads feature patented Clean Cast Technology, a process that eliminates casting flaws and promotes a smoother internal surface finish for greater air and coolant flow. These benefits provide more power and increased cooling ability.
Not Yet Reviewed
$2,023.95
Diamond Pistons Marine Series pistons are ideal for your high-demand boats. These forged aluminum pistons are significantly stronger than the factory pistons allowing your engine to handle that extra horsepower, high-rpm operation and long hours on the water. Diamond Pistons Marine Series pistons feature: * 3D milling on piston crowns for "ready to install" finish * Moly skirt coating for friction-loss and skirt-wear protection * Oversized valve pockets for "larger than stock" valve sizes * Forged 2618 or 4032 aluminum alloy (where specified) * Premium 8620 or H-13 steel wrist pins (where specified)
Not Yet Reviewed
$2,246.98
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$2,586.97
These Chevrolet Performance 350 c.i.d. cast iron racing Bowtie bare engine blocks are CNC-machined from raw castings. All traditional racing modifications are provided by the factory. The heart of these blocks starts with a 3.980-4.155 in. Siamese bore cylinder case. In addition, all galleries required for dry sump oil system operation are drilled and tapped for pipe. 8620 steel bearing caps are installed on all locations of the blocks. The intermediate main bearing caps have the outer 7/16 in. diameter studs on the inner locations, and 3/8 in. diameter straight bolts on the outer locations. The rear bearing cap is a 2-stud (7/16 in. diameter) configuration and utilizes a 2-piece rear seal design. After the installation of the steel bearing caps, the blocks are align bored. Additional features include: * Priority main oiling * Enlarged lifter bosses * Bearing cap inner bolts spread .210 in. to allow use of 2.65 in. diameter journal cranks on properly modified blocks * Early model 2-piece rear main seals * Sonic bore check (data provided) * Use 1985 and earlier oil pans * Enlarged cam bosses in front and rear allow use of larger bearings * Use premium quality studs and 8620 200 steel splayed main bearing caps
Not Yet Reviewed
$3,053.72
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$3,441.11
A true race engine--Dart Iron Eagle small block Ford cast iron bare blocks are designed from the ground up! Factory casting weaknesses have been addressed and improved upon them. The results? You get maximum efforts from your engine build with Dart's Iron Eagle Ford small blocks as your foundation! Dart Iron Eagle small bock Ford cast iron bare block features: * Dart blocks are fully CNC-machined for durability * Multiple deck heights allow for increased displacements of up to 468 cubic inches * Scalloped outer water jacket walls improve coolant flow around the cylinder barrels to prevent detonation, extend engine life and produce consistent cylinder temperatures * 4-bolt billet steel main caps are standard. Three center caps have splayed outer bolts for maximum strength * Two main bearing diameters 302 (2.249 in.) or 351C (2.749 in.) allow choice of small or large journal camshaft * Upgraded oiling system has been completely redesigned with a low restriction priority main oiling system with external oil pump feed * Reinforced head bolt bosses are blind tapped to prevent leaks and produce accurate torque readings (extra thick decks prevent head gasket leaks)
Not Yet Reviewed
$4,399.99
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