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Engine Blocks & Parts
ARP Main Stud Kits
ARP main stud kits help eliminate main cap walk/fretting and protect the threads in your engine block. They include studs made from 8740 chromoly steel and heat-treated in-house to 190,000 psi tensile-strength rating. The precision J-form threads are rolled after heat-treat for much stronger threads than the competition. Kits come complete with hardened parallel-ground washers and high-quality nuts. Add confidence in the strength of your engine build with the ARP main stud kit designed for your application.
( 393 )
$34.99
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$376.99
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
( 11 )
$2,249.99
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$3,399.99
Summit Racing™ LS Main Cap Bolt Kits
Rebuilding your GM LS engine? Replace those old main cap bolts with our Summit Racing™ LS main cap bolt kits for peace of mind. Our kit includes all 30 bolts to get the job done. They meet the same high-quality and specifications as your factory bolts.
( 16 )
$41.99
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$149.99
Dart SHP Special High Performance LS Next Pro Cast Iron Bare Blocks
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
( 1 )
$4,699.99
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.
( 9 )
$2,672.08
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
( 1 )
$2,129.99
Fleece Performance Freedom Series LSR Aluminum Engine Blocks
Fleece Performance Freedom Series LSR is a premium aluminum Gen IV LS standard deck race block designed for high performance applications. Cast from a proprietary 356 T-6 aluminum ingot, the Freedom Series LSR engine blocks are engineered with precision and designed for durability to deliver unmatched strength and compatibility with OEM LS accessories. Reinforced from top to bottom, the blocks are built for maximum performance with added features, like cross bracing in the lifter valley, maximized crankshaft saddle radius, and a 40 percent larger footprint for the main cap contact surface to the skirt wall. Whether you're upgrading for competitive racing or seeking peak performance, the Fleece Performance Freedom Series of engine blocks ensure reliability and excellence in every detail, making them a perfect choice for serious enthusiasts and professionals alike. Features: * Cross-braced lifter valley: -- Provides added structural integrity and individual drain backs for improved reliability * Heavy-duty deck thickness: -- A robust 0.750 in. deck thickness for enhanced durability * Enhanced design: -- Additional stock to the front and rear valley walls for increased strength -- A minimum 0.625 in. skirt wall thickness -- Complete reinforced exoskeleton combined with Hot Isostatic Pressing (HIP) ensures the highest quality casting available * Billet main caps: -- Billet construction ensures stability and precision fitment -- Utilizes 8740 alloy M10 main studs and side bolts along with dowels on the inner studs of the block for superior clamping and reliability -- Exclusive domed main cap design provides maximum crankshaft support * Maximized crankshaft saddle radius: -- Optimized for performance under high-stress conditions * Lightweight: -- Weighs only 120 lbs. with main caps -- Strong yet lightweight solution * Priority oil system: -- Oil rifling provides priority oil feed to critical bottom-end components -- Reduces heat, wear, and risk of failure * Ductile iron sleeves: -- Durable wear-resistant surface with improved shock absorption Engine block is shipped with: * Durabond GMP-9 cam bearings * LSR rear cover, rear cover gasket, and hardware * Plug kit * Precision ground 1018/1020 steel cam thrust plate * Transmission dowel pins * Oil galley barbell plug * Rear main seal
Not Yet Reviewed
$6,750.00
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.
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$3,382.99
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$3,780.99
Fleece Performance Freedom Series LTR Aluminum Engine Blocks
Fleece Performance Freedom Series LTR is a premium aluminum Gen V LT standard deck race block designed for high performance applications. Cast from a proprietary 356 T-6 aluminum ingot, the Freedom Series LTR engine blocks are engineered with precision and designed for durability to deliver unmatched strength and compatibility with OEM LT accessories. Reinforced from top to bottom, the blocks are built for maximum performance with added features, like cross bracing in the lifter valley, maximized crankshaft saddle radius, and a 40 percent larger footprint for the main cap contact surface to the skirt wall. Whether you're upgrading for competitive racing or seeking peak performance, the Fleece Performance Freedom Series of engine blocks ensure reliability and excellence in every detail, making them a perfect choice for serious enthusiasts and professionals alike. Features: * Cross-braced lifter valley: -- Provides added structural integrity and individual drain backs for improved reliability * Heavy-duty deck thickness: -- A robust 0.750 in. deck thickness for enhanced durability * Enhanced design: -- Additional stock to the front and rear valley walls for increased strength -- Minimum 0.625 in. skirt wall thickness -- Complete reinforced exoskeleton combined with Hot Isostatic Pressing (HIP) ensures the highest quality casting available * Billet main caps: -- Billet construction ensures stability and precision fitment -- Utilizes 8740 alloy M10 main studs and side bolts along with dowels on the inner studs of the block for superior clamping and reliability -- Exclusive domed main cap design provides maximum crankshaft support * Maximized crankshaft saddle radius: -- Optimized for performance under high-stress conditions * Lightweight: -- Weighs only 120 lbs. with main caps -- Strong yet lightweight solution * Priority oil system: -- Oil rifling provides priority oil feed to critical bottom-end components -- Reduces heat, wear, and risk of failure * Ductile iron sleeves: -- Durable wear-resistant surface with improved shock absorption Engine block is shipped with: * Durabond GMP-9 cam bearings * LTR rear cover, rear cover gasket, and hardware * Plug kit * Precision ground 1018/1020 steel cam thrust plate * Transmission dowel pins * Oil galley barbell plug * Rear main seal
Not Yet Reviewed
$6,750.00
Dart SHP Special High Performance Small Block Ford Cast Iron Bare Blocks
Dart SHP blocks are tailored to the most popular performance and racing applications. So, when you want more than stock blocks can provide, the strong reliable design and plentiful features of Dart SHP special high performance Ford engine blocks offer the perfect base foundation to start your build. Key features of SHP small block Ford bare blocks are: * Brand new precision machined cast iron block * Scalloped outer water jacket walls improve coolant flow around the cylinder barrels to equalize temperatures * Priority main oiling system directs oil to the main bearings first for more dependable lubrication * Available with 302 (8.200 in.) deck height or 351 (9.500 in.) * Provisions for OE roller lifters, dog bones and spider * Siamese bores 4.000 in. or 4.125 in. (unfinished) with extra thick cylinder walls * Extra thick decks ensure reliable head gasket seal * Blind tapped head bolt holes to prevent water leaks * Steel 4-bolt main caps on #2, 3 and 4 with splayed outer bolts. (2-bolt main caps on #1 and 5) * Can use most stock components and accessories
( 6 )
$2,699.99
Summit Racing™ Freeze Plugs
Our Summit Racing™ brass freeze plugs were designed for marine use, but you landlocked guys will get a lot of use out of them, too. All of the necessary plugs are included.
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$12.99
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$30.99
Improved Racing Engine Block Oil Galley Barbell Plugs
Improved Racing's engine block oil galley barbell plugs feature a second O-ring that completely seals off the dirty oil from the clean oil, forcing 100 percent of the flow through the filter. Sharp corners were avoided and machined as smooth fillets to improve oil flow, while the bull nose tip helps smooth oil flow to the oil filter. The shaft diameter is smaller than the OEM plastic barbell to minimize flow restriction, and the threaded hole allows for easy removal with any 4mm x 0.7 threaded screw. Please refer to the Applications tab when ordering to confirm the fitment. Features of Improved Racing's barbell plugs include: * Direct replacement for plastic OEM barbell plug * Precision CNC-machined from billet 6061-T6 aluminum * Viton® rubber O-rings offer high-temperature resistance and excellent chemical compatibility with engine oils
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$26.90
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$32.90
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.
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$2,265.99
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$2,445.99
Summit Racing™ Mockup Replica Blocks
Summit Racing™ Mockup Replica Blocks are light-weight and ship disassembled for ease of shipping and storage. The individual panels are easily assembled with tabs and slots for superior rigidity and accuracy compared to bolt-together types. Steel resists the heat from welding, so custom motor-mounts can be fabricated right on the block.
( 16 )
$199.50
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$299.99
Dorman Rear Main Seal Covers
Use Dorman engine rear main seal covers to ensure the proper sealing of your engine, to stop and/or prevent engine oil leakage. They are made from high-quality materials and are available as direct replacements for a proper fit on various makes and models. Whatever your repair needs, Dorman has just what you're after!
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$51.78
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$250.95
Summit Racing™ LS Rear Main Seal Housings
Summit Racing™ LS Rear main seal housings are the correct housings for all LS models. These aluminum housings are ideal for replacing damaged housings and building a new project from scratch. Summit Racing™ LS rear main seal housings are designed for a correct fit and quality performance.
( 17 )
$52.99
ARP High Performance Series Main Bolts
ARP High Performance Series main bolts are rated at 180,000 psi and a popular premium replacement for OEM fasteners. Designed to meet the exacting standards and demands of professional engine builders, ARP bolts are forged from 8740 chromoly steel and feature a reduced wrenching head, large underhead radius, and rolled threads for the utmost in reliability. The threads are rolled after heat-treating which gives them about 2,000 percent better fatigue strength than most main bolts that are threaded prior to heat-treating. Hardened parallel-ground washers are included with each kit.
( 177 )
$35.99
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$414.99
ICT Billet LS Lifter Valley Covers
Seal up your engine while looking good with one of these ICT Billet LS lifter valley covers. They are designed to fit (Non-DoD) engines and are milled from a solid block of aerospace-quality billet aluminum. The covers offer outstanding block rigidity, while the precision-machined underside provides an excellent seal using the existing factory O-ring. Their wide chamfered edges ensure adequate intake manifold runner clearance and they include the necessary flush mount, Allen head stainless steel mounting hardware.
( 71 )
$109.99
Melling Freeze Plugs
Seal up the casting core holes in your engine block and heads with Melling freeze plugs. They're manufactured from a variety of quality materials—such as brass, steel, and stainless steel—and offered in different diameters and depths to fit your specific application. These expansion plugs help protect against cracks caused by the pressure of frozen coolant and in regular operation will ensure that all vital fluids stay in the engine, where they belong. They are available for a wide range of makes and models, and can be ordered individually or in a multi-piece kit.
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$0.50
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$27.99
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
$1,610.00
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$6,039.00
Dart LS Next Cast Iron Bare Blocks
Dart LS Next cast iron bare blocks integrate the robust heritage of a traditional Chevy small block with the performance potential of the late model LS engine architecture. The blocks are designed to rectify some of the former LS's more noticeable shortcomings on the bottom end—while still supporting high-flow and efficient cylinder heads developed for Gen III and IV platforms. They're available in multiple engine block styles, including stock/OEM standard deck and aftermarket. Dart LS Next blocks are back and better than ever! Highlight features of the LS Next cast iron bare blocks include: * Cast with premium cast iron alloy * Conventional style 4-bolt steel main caps * Full main webbing for maximum bottom-end strength * Extended cylinder barrels at the bottom to provide greater piston support for all combinations * Extra-thick Siamese cylinder bores * Blind head bolt holes don't go through into the water jacket * Provision for oil restrictors in the lifter valley * Revised low-restriction priority main oiling system * Pro-Stock/Pro-Mod big block style stepped main oil galley * External oil filter (must be used with stock or aftermarket oil pumps) * Dual starter mounts * Expanded water jacket on #1 cylinder for additional cooling capacity * LSX-style lifter bosses and dog bone provision are provided
Not Yet Reviewed
$3,999.99
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$4,499.99
Lingenfelter Performance Engineering DOD Delete Blind Sealing Plugs
DOD delete blind sealing plugs are used in GM Gen IV and V V8 engine blocks that will not be using Active Fuel Management (AFM), Displacement On Demand (DOD), or the AFM/DOD lifters. To close the oil flow passages in the block and prevent a significant internal oil leak causing low oil pressure, Lingenfelter Performance Engineering DOD delete blind sealing plugs are essential. Made from high-quality M8 alloy aluminum they are built to be reliable and last.
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$22.75
Moroso Oil Galley Barbell Plugs
Replace a worn out or old rear oil passage plug with Moroso oil galley barbell plugs. Your vehicle's old plug could be allowing dirty engine oil to bypass the oil filter. Moroso's improved design features a secondary O-ring to seal dirty oil from flowing to the engine bearings. These dog bones also have a smaller shaft diameter than the OEM piece to minimize any flow restriction. Moroso's oil galley diverters are machined from billet aluminum, not plastic like the original OE piece, and are supplied with quality, high-temperature rated Viton® O-rings to withstand all types of engine oils and compression cycles. Whether you call them passage plugs, dog bones, or barbells, these Moroso components can be easily removed from the engine block once installed with its 4mm threaded hole.
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$25.99
ATK High Performance GM 350 Vortec Bare Blocks
ATK High Performance Engines offers GM 350 Vortec bare blocks with the following specifications: * Block: 100 percent new bare block with one-piece rear main seal * Bore: 4.000 in. (4.0003-4.0008 in. -- Pistons size vary, final honing may be required) * Maximum bore: 4.060 in. recommended * Displacement: 350 cu. in. * Main journal type: Chevy 350 * Engine block material: Premium iron alloy * Engine block style: Aftermarket, based off the Vortec 350 roller block * Engine block deck height: Standard deck * Engine oiling system: Priority main * Fuel pump boss: Yes * Main bolt style: 4-bolt * Main caps included: Yes * Main cap material: Cast iron * Main cap fasteners included: Yes * Main bearings included: No * Camshaft bearings: Dura-Bond, installed and clocked to OEM position * Freeze plugs: Brass, installed and sealed * Oil galley plugs: Installed and sealed * Roller camshaft compatible: Yes * Stroker clearanced: Yes, but the assembler must always check, as components differ
Not Yet Reviewed
$1,898.99
