Engine Blocks & Accessories Engines & Components

Summit Racing™ SPC Engine Blocks

Summit Racing™ SPC Engine Blocks are aftermarket V8 Engine Blocks made for "Street, Performance, or Competition." These new clean sheet designed aftermarket blocks are cast in a modern state-of-the-art German foundry on brand new molds and machined in USA on modern high-speed machining centers that can hold the tightest of tolerances. Why start your engine build with a dirty, old, worn-out production block that needs hundreds or thousands of dollars of machine work--when you can start with a new heavy-duty casting full of high-performance features. We ship these blocks mostly finished but leave the cylinder bore .005" undersize, your machine shop will have to hone them for proper size. You can rest assured that you have a great foundation for your engine build. Check out the features below! Additional details: • Available Versions Include: GM Small Block, GM LS, GM Big Block (coming Soon,) Ford Windsor 5.0 and 351W • Cast in Germany at a Tier 1 OEM foundry • Made with class 35 Iron Alloy, Higher tensile strength and harder than competitors' class 30 • Machine-finished in USA on precision hi-speed machining centers- All dimensions are very accurate! • Priority main oiling systems & Siamese Cylinder bores • Blind head bolt holes • 4-bolt main caps, 180,00 PSI main bolts included

4.94 out of 5 stars ( 16 )

$2,249.99

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$3,599.99

Ford Performance Parts 5.2L Gen 3 Coyote Aluminum Engine Blocks

Ford Performance Parts 5.2L Gen 3 Coyote aluminum engine blocks are upgraded versions of the Gen 1 and Gen 2 blocks (M-6010-M52 and M-6010-M52A). They feature higher flow oil squirters to provide added piston cooling and improved crankcase windage. All features are finish-machined, including head deck and crank bore. Get revved up for the improved high performance casting of Ford Performance 5.2L Gen 3 Coyote aluminum engine blocks and their ability to support higher horsepower engine builds! Features, items, and specs: * 94.0mm bore * Rod bolt path is clearance-machined in crankcase of block * Utilizes longer (187mm) cylinder headbolts to provide greater clamping force (requires longer headbolt kit: M-6067-M501280 or M-6067-M52B head changing kit) * Water jacket below cylinder bore updated to add more material for strength * Intake side of bore at deck surface includes cast-in brace (improves strength of cylinder wall and head gasket sealing) * Block features plasma-transferred wire arc spray weld liner coating (improved durability and heat transfer, reduced friction, and weight savings compared to previous Mustang GT aluminum blocks) * Cylinder liner coating doesn't require unique piston rings or piston material * Cylinder bores finish-honed and ready to assemble * Cross-bolted nodular iron main bearing caps—uses 12mm cylinder head bolts * Block has provisions for piston oil squirters (included) * Plugs and dowels

5.0 out of 5 stars ( 1 )

$2,594.99

Ford Performance Parts Boss 302 Engine Blocks

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.

5.0 out of 5 stars ( 3 )

$2,265.99

Ford Performance Parts 460 C.I.D. Siamese Bore Engine Blocks

Direct from Ford Performance Parts are these 460 c.i.d. Siamese bore racing blocks. Don't rely on finding that old junkyard engine when you can have one of these new 460 Siamese bore blocks for your ultimate power trip needs. Siamese blocks are solid castings between the cylinder bores to increase the strength of the blocks. Features include: * 10.322 in. deck height * Cast iron block with 4-bolt main caps on journals 2, 3, and 4 * Nodular iron main caps * Can be bored and stroked to produce 598 cu. in. * Available in standard (4.360 in.) or big bore (4.600 in.) versions * Wet sump oiling design * 3.000 in. main journal diameter * High-strength block for professional competition (circle track, drag racing) * No water passages between the cylinder bores * 4-bolt main caps require stock oil pan modifications * Weigh approximately 275-290 lbs.

5.0 out of 5 stars ( 1 )

$3,382.99

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$3,402.99

Chevrolet Performance 454 C.I.D. Bare Engine Blocks

Direct from Chevrolet Performance are these 454 c.i.d. bare engine blocks. These are special Gen. VI bare iron blocks with 4.25 in. cylinder bores with 4-bolt main bearing caps. They have machined fuel pump pads, a one-piece rear main seal design, and standard 454 deck height. The maximum cylinder bore on these blocks is 4.25 in. plus .060 in. O.S., and will require the "Gen V/GenVI" design one-piece oil pan.

4.89 out of 5 stars ( 9 )

$2,815.99

Dart SHP Special High Performance Small Block Chevy Cast Iron Bare Blocks

Dart SHP Special High Performance small block Chevy cast iron bare blocks are designed for high performance and heavy duty applications. These SPH blocks are an ideal starting point for hot rodders, drag racers, circle track competitors, off-roaders and high performance marine enthusiasts. Key features of SHP small block Chevy bare blocks are: * Priority main oiling system * Siamese cylinder bores with extra-thick walls * Extra thick decks to ensure reliable head gasket seal * Blind head bolt holes (don't go through water jacket) * Scalloped water jacket walls for improved flow around cylinders for better cooling * Clearance for 3.75 in. stroke with steel rods * Splayed outer bolts on middle main bearing caps * Provisions for OE stock roller lifters and cams * All OE bolt holes starter, clutch ball, etc. * Uses 1981 to 1985 stock style oil pan and passenger side dipstick * Uses stocked stamped steel or plastic timing cover

4.64 out of 5 stars ( 11 )

$2,299.99

BluePrint Engines GM Small Block Compatible Bare Engine Blocks

If you're aiming to build a stout, reliable small block without breaking into exotic territory, the BluePrint Engines GM Small Block Compatible Bare Engine Blocks are the perfect foundation. Engineered to comfortably support combinations all the way up to 454 cubic inches, they deliver the strength, precision, and durability builder's demand. With thick cylinder walls, a rigid casting, and smart machining allowances, the BluePrint GM Small Block Compatible Bare Engine Blocks are structured to handle everything from a crisp street cruiser to a hard-hitting weekend track car. Key features and specifications: * Material Construction: EN-GJL-250 iron for increased strength * Design: Siamese bore construction with thick cylinder walls (approx. 0.230-inch at maximum bore) * Main Caps: Splayed 4-bolt main caps with 180,000-210,000 psi tensile strength * Deck Height: 9.025-inches (+0.005/-0.000) * Bore Options: Rough bores available at 3.995-inch to 3.997-inch or 4.120-inch to 4.122-inch, with a maximum finish bore of 4.250-inches * Capacity: Supports up to 454 cubic inches, with 4.125-inch bore capacity * Rear Main Seal: Offered in both 1-piece and 2-piece seal designs to accommodate different rotating assembly styles Critical features for builders: * Clearance: Cast-in clearance for up to a 3.875-inch stroke (select models clear up to 4.000-inches) * Oiling System: Uses a Priority Main Oiling system to ensure critical bearing surfaces receive oil first during high-RPM operation * Component Compatibility: Accepts standard OEM-style timing covers, oil pans, mechanical oil pumps (not included) * Machining Details: Lifter bores are machined to .8437-inches (+/- .0003-inch) and are compatible with OEM roller provisions * Additional Provisions: Blocks include a passenger-side dipstick and are drilled and tapped for mechanical fuel pumps and clutch linkages

Not Yet Reviewed

$2,299.99

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$3,999.00

BluePrint Engines Small Block Ford Compatible 302 Windsor Bare Engine Blocks

If you're ready to take your Ford small block to the next level, BluePrint Engines Small Block Ford Compatible 302 Windsor Bare Engine Blocks provide a rock-solid foundation your build deserves. Engineered to support stroker combinations up to 363 cubic inches, they deliver the strength, stability, and precision machining today's high-output Ford builds demand. Thick cylinder walls, reinforced casting, and smartly designed oiling pathways make them the ideal starting point for everything from a crisp street performer to a full-tilt track or autocross machine. Whether your vision is naturally aspirated punch or boosted aggression, BluePrint Engines Windsor based bare blocks give your project the durability and confidence to handle big power with classic Ford attitude. They are ideal for high-performance street, strip, or racing applications, providing a stronger foundation than original Ford cores. Key features and specifications: * Material: High-strength cast iron (EN-GJL-250) designed with thicker cylinder walls and significantly reinforced webbing compared to stock Ford blocks * Design: 4-bolt main caps (billet steel) and improved, thicker webbing, which allows for higher horsepower capacities without cracking * Dimensions: 8.200-inch deck height, 4.000-inch bore (can be bored further, with some versions supporting up to 4.125-inch or 4.165-inch max bore) * Suitability: Optimized for 302-based stroker combinations up to 363 cubic inches * Oiling System: Features priority main oiling for improved lubrication * Main Seal: 1-piece rear main seal design * Accommodates hydraulic roller cams, factory-style roller lifters, and standard timing covers (not included)

Not Yet Reviewed

$2,599.00

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$2,899.00

Chevrolet Performance Bowtie Big Block Chevy Cast Iron Engine Blocks

Chevrolet Performance Bowtie big block Chevy cast iron engine blocks are CNC-machined. The race-prepared blocks feature blind head and accessory mounting bolt holes, a deck configuration that enables the use of any big block Chevy cylinder head—and cylinder bores that may be safely bored to a 4.600 in. maximum diameter, while maintaining a .250 in. minimum cylinder wall thickness. These engine blocks differ from the production-machined Bowtie versions in certain areas; they start from raw castings and are not "conversions." They also use a rear seal adapter to convert the Gen V/VI one-piece rear main seal to a Mark IV type 2-piece seal that facilitates the use of a widely available Mark IV style crankshaft. The intermediate caps also feature 16 splayed outer bolts, which anchor the caps into the strongest section of the blocks and prevent bearing cap movement under high loads. The main oil gallery on these blocks is relocated and enlarged to a 9/16 in. diameter to allow increased oil flow through the block. These Bowtie blocks have inner head bolt bosses, which allow for better retention of the cylinder heads in high-horsepower applications when the cylinder heads "lift" from the blocks due to high cylinder pressures. Order the style and deck height preferred for your application.

4.86 out of 5 stars ( 7 )

$4,305.07

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$4,521.75

Callies Mopar Engine Blocks

Callies Mopar engine blocks are Officially Licensed Mopar products. Together with Energy, Callies will manufactured and distribute cast iron engine blocks and components. All parts manufactured will carry authentic Mopar part numbers and be produced from original Mopar molds, cores, and engineering data. The Mopar blocks are being offered in different bore sizes in finished and RoughBore (RB) versions.

Not Yet Reviewed

$3,170.66

Chevrolet Performance LSX Bowtie Engine Blocks

Chevrolet Performance LSX Bowtie engine blocks are designed for the advanced competition engine builder. They feature Siamese cylinder bores and a semi-finished deck height. The blocks can accept a maximum stroke of 4.250 in., a maximum bore of 4.250 in., and can support displacements of 454 cu. in. or more. LSX Bowties feature cast iron construction with an orange powdercoat finish. They accept all Gen III and IV LS-style cylinder heads, crankshafts, camshafts, and other components. Order the model with deck height and other options needed for your application. Additional features and specs include: * Front oil feed lines that can be plugged or restricted for mechanical flat tappet or mechanical lifter applications * Can be safely machined to 9.200 in. deck height * 1054 billet steel 6-bolt main bearing caps * 6-bolt cylinder head bolt pattern * Cam bores that can be machined to accept 60mm roller bearings * Can be machined for larger diameter lifters * External oil pump feed at the rear * Added 7th transmission bolt hole to work with early-style GM transmissions * Can accept a front motor plate for racing use * Threaded freeze plugs that can be used for external heaters or coolers * Windowed main bulkhead

5.0 out of 5 stars ( 1 )

$4,794.49

BluePrint Engines GM Big Block Compatible Bare Engine Blocks

When you're building big power, you need a block that's ready to carry the load—and the BluePrint Engines GM Big Block Compatible Bare Engine Blocks are engineered to take you all the way to a massive 598 cubic inches. Designed for serious street, strip, and marine performance, they deliver the strength, rigidity, and machining precision needed for high-horsepower combinations. Thick cylinder walls, robust main webbing, and smartly engineered oiling and cooling pathways give builders the confidence to push displacement and power further without sacrificing reliability. Whether you're crafting a torque-heavy cruiser or a high-rpm bruiser, the BluePrint Engines GM Big Block Compatible Bare Engine Blocks are a rock-solid starting point your big-inch Chevy build. Key technical specifications: * High-strength cast iron (EN-GJL-250) * Main caps: 4-bolt splayed (Ductile iron or Billet steel options) * Deck Heights: 9.800-inch or 10.200-inch * Bore Sizes: 4.500-inch or 4.600-inch (Siamese bores) * Rear Main Seal: 2-piece * Max Displacement: capable of up to 632+ cubic inches * Max Stroke: 4.750-inches * Weight: approximately 240-260 lbs. (with caps) * Features: Priority main oiling, extended cylinder skirts for stroker clearance, and .310 inches nominal wall thickness at max bore

Not Yet Reviewed

$3,999.00

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$4,799.99

EMPI H.D. Bubble Top Engine Cases

EMPI H.D. Bubble Top engine cases are made of all new construction with numerous design features added in right from the start making them a strong and more reliable base for your next build. Each case features a raised roof, strong radius design that adds strength and allows clearance for up an 86mm stroker crank. Head studs are available in either 8mm or 10mm ensuring your choice of cylinder head is covered. Every EMPI H.D. Bubble Top engine case is fully CNC machined following strict quality control standards ensuring accuracy every step of the way. When starting your next engine, start with confidence with EMPI H.D. Bubble Top engine cases.

Not Yet Reviewed

$2,594.20

Chevrolet Performance LS Bare Engine Blocks

Chevrolet Performance offers a variety of LS bare engine blocks to suit your needs. These Chevrolet Performance LS series cylinder blocks are specifically designed for late model small block engines that run the LS family of cylinder heads. These include the LS1, LS2, LS3, LS6, LS7, LQ4, LQ9, L76, and L92. Their LS block selection ranges from a stock replacement all the way up to Chevrolet Performance's LSX Bowtie block designed to support over 2,000 hp!

Not Yet Reviewed

$2,803.11

World Products 302 C.I.D. Ford Man O'War Blocks

The engineering team at World Products collaborated with leading Ford racers and professional engine builders to develop the Man O'War replacement blocks for the popular 302 small block. They are available in two deck heights to ensure compatibility with all popular OEM and aftermarket cylinder head/intake manifold combinations. World Products' new Man O'War Ford blocks have been created utilizing contemporary CAD/CAM manufacturing technology for more precisely detailed blocks than were ever before possible through conventional foundry methods. And, they're made to QS-9000 quality standards, the highest in the industry.

Not Yet Reviewed

$4,571.99

Dart Iron Eagle Mopar Gen III Cast Iron Bare Blocks

Designed from a clean slate approach, Dart now offers the Iron Eagle Mopar Gen III cast iron bare blocks that address the shortcomings of the Hemi Gen III platform, and are the ideal candidate for hot rodders, drag racers, circle track competitors, off-roaders, and high performance marine enthusiasts. By utilizing conventional style main caps with Gen III rotating assemblies and related components, Dart has addressed the windage and oil control problems, along with revising the cooling and oiling passages for improved flow. Non-VVT and VVT version offerings are available. Get everything you ever wanted out of your Gen III Hemi engine with the Iron Eagle Mopar Gen III cast iron bare blocks by Dart! Key features of Dart Iron Eagle Gen III Hemi cast iron engine blocks: * Manufactured from superior strength cast iron * Priority main oiling system with two lifter crossovers and restrictor provisions * Siamese cylinder bores with extra thick walls * Extra-thick decks ensure reliable head gasket seal * Blind head bolt holes available in 7/16 in. standard or 1/2 in. upgrade * Scalloped water jackets increase flow around cylinders for better cooling * Clearance for 4.050 in. stroke with steel rods * Billet steel 4-bolt main caps 1-5, center 3 main caps splayed * Main studs standard * Gen III Hemi style motor mounts * Provisions for OE stock roller lifters and cam * Uses stock timing covers * All OE bolt holes for starter, water pump, etc. * Block can be machined for VVT or non-VVT camshafts * Parts kit included (32000050 for non-VVT, or 32000051 for VVT); note parts kits do not include cam bearings

Not Yet Reviewed

$4,610.99

BluePrint Engines GM LS Compatible Bare Engine Blocks

Whether you're assembling a torque-rich street monster, a boosted track bruiser, or a no-compromise stroker setup, BluePrint Engines GM LS Compatible Bare Engine Blocks give you the headroom and confidence to push your LS platform far beyond stock limits. These bare engine blocks are high-strength, cast-iron, aftermarket foundations designed for high-horsepower, boosted, or stroker applications up to 519+ cubic inches. With reinforced architecture, thick cylinder walls, and precision-machined surfaces, they deliver the rigidity and reliability needed for high-horsepower, high-rpm combinations. Big inches, big power, and rock-solid dependability start right here with GM LS bare engine blocks. Key features and options for BluePrint LS-compatible blocks include: * Cast iron with Siamese cylinder bores for maximum strength * Compatible with LS3 and LSX components * Structure: Reinforced main webbing, thick cylinder walls, and 6-bolt billet main cap design on some models * Stroke/Bore: Extended 5.75-inch cylinder skirts for longer strokes (up to 4.185-inch bore) * Design enhancements include priority main oiling, 4-corner steam ports, and improved water jackets for better cooling * Deck Heights: options include 9.240-inch and 9.705-inch * Available in 4.000-inch and 4.125-inch bore options * Cylinder Wall Thickness: 0.210-inch to 0.230-inch * Oiling System: priority main oiling with center crossover * Weight: approximately 240 lbs.

Not Yet Reviewed

$4,799.99

BluePrint Engines Small Block Ford Compatible 351 Cleveland Bare Engine Blocks

If you're ready to take your Ford small block to the next level, the BluePrint Engines Small Block Ford Compatible 351 Cleveland Bare Engine Blocks provide the rock-solid foundation your build deserves. Engineered to support stroker combinations up to 363 cubic inches, they deliver the strength, stability, and precision machining today's high-output Ford builds demand. Thick cylinder walls, reinforced casting, and smartly designed oiling pathways make it the ideal starting point for everything from a crisp street performer to a full-tilt track or autocross machine. Whether your vision is naturally aspirated punch or boosted aggression, the BluePrint Engines Small Block Ford Compatible 351 Cleveland Bare Engine Blocks provide a stable, reliable foundation for serious power. Key features and specifications: * High-strength cast iron (EN-GJL-250) with reinforced webbing for superior durability * The blocks feature Siamese cylinder walls that are significantly thicker than stock (nominal wall thickness of 0.250-inch) to support larger bores and high cylinder pressure * Enhanced deck and bell housing for improved head gasket sealing and additional webbing at the rear to help prevent bellhousing flange cracking * Ductile cast iron 4-bolt splayed main bearing caps for added bottom-end strength * Designed for 351 Cleveland main bearing bores and capable of supporting up to 460 cubic inch stroker assemblies * Fully machined with aligned-honed main bores, blind head bolt holes, and priority main oiling * Maximum Bore/Stroke: Supports up to 4.165-inch bore and 4.250-inch stroke * Uses a standard 2-piece rear main seal style * Designed with clearance reliefs for common aftermarket motor mounts and utilizes OEM-equivalent starters, fuel pumps, and oil pans (sold separately) * Compatible with standard 351 Windsor hydraulic roller camshafts and OEM-style retainers without needing retrofit hardware (cam/retainers not included)

Not Yet Reviewed

$3,599.00

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$4,399.99

S&S Cycle Super Stock Generator-Style Crankcases

S&S Cycle Super Stock generator-style crankcases for Big Twin engines with stock bores are designed with a stock-like appearance and incorporate updated design features that improve overall engine strength and reliability. Select the crankcase to fit your engine. Features and benefits: * Pre-clearance for strokes up to and including 5 in. * Motor mounts on crankcases for knucklehead engines are machined to fit stock 1936-47 frames. An adapter plate is included for 1948 and later-style frames * All cases are designed for late style generator, two brush type with 5/16 in. mounting bolts to eliminate early generator cradle/mounting strap bosses for simplicity and economics * Timken sprocket shaft main bearing, in all years, instead of stock-straight roller bearings; resulting in better flywheel assembly stability, placement and longer engine life * Kits include crankcase assembly, all required hardware and bearings for installation Note: All S&S crankcases use Timken style sprocket shaft bearings and 1958 and later pinion bearings. These cases will not accept stock 1957 and earlier flywheel assemblies.

Not Yet Reviewed

$2,195.95

S&S Cycle 100 in. Power Packages

S&S Cycle 100 in. power packages are the ideal combination of performance and savings to transform your Harley® without breaking the bank. Bump that early Twin Cam from 88 cu. in. to 100 cu. in., while adding matched cams/cam plate/oil pump and everything else needed to reliably make big power. Optimize the performance of your bike by using one of these economical 100 cu. in. power packages from S&S Cycle. Features, benefits, and specifications: * Upgrade TC88 to 100 cu. in. * Engineered package to deliver the best bolt in performance * 4 in. bore bolt-on cylinder and piston kit * Wrinkle black finish * 585 Easy Start chain drive cams * TC3 oil pump and cam plate * Cam chain tensioners * Quickee adjustable pushrods with tubes * Precision tappets

Not Yet Reviewed

$3,396.95

S&S Cycle 110 in. Power Packages

S&S Cycle 110 in. Power Packages are the ideal combination of performance and savings to transform your Twin Cam HD without breaking the bank. Bump the early Twin Cam from late 96ci or 103ci to 110ci, as well as add matched cams/cam plate/oil pump and everything else a high performance cam chest needs to reliably make big power. Features: * 4 in. bore bolt on cylinder and piston kit * 10.5:1 compression * Wrinkle black finish * S&S 585 Easy Start cams in either gear or chain version * TC3 oil pump * TC3 cam plate * S&S cam chain tensioners or outer cam drive gears * Quickee adjustable pushrods with tubes * S&S precision tappets * Low-friction ductile cast iron liner * Bolts in with no machining, balancing, or splitting the crankcases * Cylinders fit to pistons--no machining required * All parts required to upgrade to gear drive cam or hydraulic tensioners in one easy to order part number

Not Yet Reviewed

$3,396.95