Availability
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
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
$2,992.95
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$3,121.16
Howards Cams extreme billet main caps are precision CNC-machined from superior-quality low-carbon 1020 billet material. They come available as stock replacements (straight bolt) or with splayed outer bolt holes. The splayed caps feature 10 degree angled outer holes to positively reinforce and tie the block together. Front, rear and center caps are all available. Use all the Howards Cams caps together for the ultimate in bottom-end stress and flex management. Howards Cams main caps feature side notches for easy removal and are proudly 100 percent manufactured in the USA. Line boring is required after installation.
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$89.99
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$312.99
Derale LS engine oil cooler block-off adapters can replace your stock GM adapter in order to furnish more 1/8 in. NPT ports. The two extra ports can be used for additional accessories and/or sensors. These block-off adapters are designed with an ultra-low profile to clear most header applications, and can withstand up to 200 psi.
Not Yet Reviewed
$64.35
Improved Racing oil cooler adapters have a low-profile for more header clearance. The adapters are machined from a single piece of billet aluminum and black anodized. For additional clearance with reliable sealing, they come with aluminum gaskets fitted with Viton® seals, and the adapter mounting holes are counter-bored so the mounting bolts fit flush with the adapter surface. Select Improved Racing oil cooler adapters are also available with a built-in thermostat. Oil coolers help prevent the oil from getting too hot, but are also prone to lowering oil temperatures too much, especially in colder weather or during highway driving. The rebuildable thermostat speeds warm-up and helps reduce engine wear and horsepower losses by preventing oil temperatures from dropping below optimal levels. Features and benefits * 100 percent bolt-on solution; no fabrication, bending, or line modification is required * Viton® seals throughout for maximum reliability * Oil exiting the adapter is filtered oil * 6061 T-6 billet aluminum construction with black MIL-A-8625 Type II anodized finish * Standard female -8 AN O-ring boss threads for optional anodized adapter fittings in your choice of -8 AN, -10 AN, or -12AN lines * Depending on application, includes port(s) for oil sensors or turbo oil supply * Includes all necessary hardware * Limited lifetime warranty
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$159.00
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
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
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
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
Inspired by S&S Pro Stock drag race engines, S&S Cycle 4 in. Sidewinder big bore kits utilize a ductile cast iron liner wrapped in cast aluminum for optimum thermal conductivity and performance. These bolt-in kits do not require machining, re-balancing, or engine removal, and include just about everything you'll need to complete the installation. S&S Cycle 4 in. Sidewinder kits offer the biggest cylinder bore that can be installed in a stock crankcase without machining! Features: * Low-friction ductile cast iron liner * 10.5:1 compression * Bolts in with no machining, balancing, or splitting the crankcases * 88 in. engines are boosted to 100 in. * 96 in. and 103 in. engines are boosted to 110 in. * Complete kits include cylinders, pistons, gaskets, and instructions * Wrinkle black and silver cylinders that match stock finish
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$1,395.86
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$1,435.46
Dart puts Ford racers in front with their Race Series small block Ford aluminum bare blocks designed just for Fords! The highlights and features of Race Series blocks include: * Cast 355-T6 aerospace alloy blocks for superior strength and integrity * Siamesed cylinders with standard 4.00 in. or 4.125 in. cylinder bores, which can be safely bored to 4.165 in. diameters * Ductile iron sleeves and extra-thick walls prevent cracking and produce excellent ring seal * Scalloped water jackets increase coolant flow around cylinder barrels to prevent detonations, extend engine life, and produce consistent cylinder temperatures * Four deck heights are available * Steel 4-bolt main bearing caps are standard. Three center caps have splayed outer bolts for maximum strength; rear cap uses standard one-piece seal * Two main bearing diameters of 2.249 in. or 2.749 in. allow choice of small or large journal crankshaft * Stock components make Dart blocks a direct replacement for most production small blocks. * Provisions for stock motor mounts, accessory drives, smog pumps, starter brackets, oil pans, and pumps * Upgraded oiling system has a complete stock-type system, plus a low-restriction priority main oiling with front and rear external oil pump feeds * Dual crossovers allow oil flow to be metered with restrictors for roller lifter cams and/or roller rocker arms to reduce oil flow and windage * Reinforced head bolt bosses are blind-tapped to prevent leaks and produce accurate torque readings * Extra-thick decks prevent head gaskets leaks * Standard camshafts and camshaft drives can be used * Precision CNC machining ensures consistently high quality and eliminates expensive "blueprinting"
Not Yet Reviewed
$6,999.99
S&S Cycle Super Stock alternator-style crankcases are perfect for stock replacement and high performance applications. Available in stock and different bore sizes, some are machined for the installation of a crank position sensor, but all are compatible with stock flywheel assemblies, primary covers, gear covers, and are clearanced for 38 amp alternator stators. Certain options may include the required hardware, fittings, and bearings, and may be offered in different finishes. Select the S&S Super Stock alternator-style crankcase designed for your motorcycle's engine.
Not Yet Reviewed
$1,456.16
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$1,899.95
S&S Cycle offers MK-Series Performance crankcases for a variety of Harley-Davidson Touring and Softail street bikes from 2017 and up. These assembly replacements enable you to build massive power easily and reliably, particularly with M8 engines, and stock cases can't provide the necessary quality base. MK-Series crankcases are designed to allow for larger bores, scrape more oil than stock, have a larger volume sump, and fit in a stock frame without modification. Order the model recommended for your application.
Not Yet Reviewed
$2,499.95
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$2,849.95
HardDrive cylinders are offered as a stock replacement as well as increased displacement (depends upon application) for applications as early as Panhead all the way up to Evolution and Sportster. All cylinders must be finish honed and matched to pistons (sold separately).
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$221.36
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$246.56
On top of being constructed from superior materials, S&S Cycle's Evolution cylinders have thicker castings, larger cooling fins, and better wear resistance than stock cylinders. The design, finish and workmanship of these replacements corresponds to the stock counterparts that they replace. The cylinders feature ductile cast-iron sleeves in aluminum castings and are available in natural or black powdercoat finish to match OEM components. Individual cylinders and cylinder sets without pistons are bored slightly under size and are not honed, so they may be finish-honed to fit your pistons. Select the cylinders designed to fit your specific Harley-Davidson® model.
Not Yet Reviewed
$815.95
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$877.95
S&S Cycle 97 in. big bore kits will increase the displacement of 88 in. engines to 97 in., are easy to install, and require no machining or re-balancing. Using an 11-fin design, these pre-finished cylinders closely resemble the OEM shape and are ready to install. Order an S&S Cycle 97 in. big bore kit—and take your stock engine case as big as it'll go! Features of the S&S Cycle 97 in. big bore kits: * The 97 in. big bore kits for 88 in. motors yield excellent results with stock cylinder heads * Feature the same silver or black wrinkle powder-coat as stock, so they match the stock finish of the engine * Specifications: 3.927 in. bore, 4 in. stroke, 97 in. displacement, and 9.7:1 compression ratio with stock heads (9.3:1 compression ratio with S&S 89cc heads or 10.7:1 with S&S 79cc heads) * Feature the largest bore (3.927 in.) that can safely be used in a cylinder with stock spigot diameter * Included S&S cylinders feature a much stronger cast iron liner to stand up to the added power * Easy installation: no need to bore or split existing cases, just swap the cylinders *Kit includes cylinders, pistons, rings and gaskets (head, base and exhaust) * For best performance, appropriate camshafts, performance air cleaner, performance exhaust and fuel system tuning is required
Not Yet Reviewed
$1,065.56
S&S Cycle Sportster cylinders are available as stock replacement for originals barrels which have reached their wear limit. The design, finish and workmanship of these cylinder replacements corresponds to the stock counterparts that they replace on various HD® models. These cylinders feature ductile cast-iron sleeves in aluminum castings and are available in silver or black wrinkle finishes to match your OEM components. Individual cylinders and cylinder sets without pistons are bored slightly under size and are not honed, so they may be finish-honed to fit your pistons. Select the cylinders in application designed for your specific Harley-Davidson® model.
Not Yet Reviewed
$652.95
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$713.95
S&S Cycle M8 big bore cylinders are bolt-on sets for Milwaukee 8 models. They are available in a Wrinkle Black finish with or without highlighted fins. Select the set you would like.
Not Yet Reviewed
$854.06
S&S Cycle 95 in. big bore kits will increase the displacement of 88 in. engines to 95 cu. in., are easy to install, and require no machining or re-balancing. Using an 11-fin design, these pre-finished cylinders closely resemble the OEM shape and are ready to install. Order an S&S Cycle 95 in. big bore kit to take your bikes stock engine case as big as it'll go! S&S Cycle 95 in. big bore kit features: * Increases Twin Cam displacement from 88 in. to 95 in. with this S&S kit * Forged piston weight is virtually identical to stock, so no rebalancing is necessary * No crankcase machining required * Features the same silver or black wrinkle powder-coat as stock, so they match the stock finish of the engine * Compatible with either OEM or S&S Cycle Super stock heads * Big bore 3 7/8 in. cylinders * 9.7:1 compression ratio with stock heads * Includes cylinders, pistons, rings, and gaskets required for installation
Not Yet Reviewed
$1,120.46
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$1,131.26
S&S Cycle Hot Set-Up Twin Cam cylinders are handsomely designed to house your pistons. They are crafted from aluminum, available in a silver, stone gray, or machined wrinkle black finish, and have a stock bolt pattern. Select the Hot Set-Up cylinders designed for your Big Twin engine. Please note: Individual cylinders and cylinder sets without pistons are bored slightly under normal size and are not honed.
Not Yet Reviewed
$897.95
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
$3,011.36
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$3,121.16
The Twin Cam 88A crankcases from S&S Cycle provide a stronger, more reliable, and more durable foundation for the engine, particularly in high-performance applications, addressing weaknesses in the previous Evolution engine. The Twin Cam 88A is intended to replace crankcases in HD® Twin Cam 88 engines in existing HD® chassis only. S&S stock style crankcases have a rear motor mount that bolts directly to the stock 1999-2006 transmission for all models except 2006 HD® Dyna. Known for their strength and durability, these crankcases are compatible with the stock primary, charging system, and other stock components. Stock bore cases are perfect for replacement applications, 4 in. bore cases are a natural for use with the S&S Super Sidewinder Hot Set Up kits, and 4 1/8 in. bore cases make really large displacement custom engines possible and are available with the S&S cylinder stud pattern or with the stock cylinder stud pattern. The 4 1/8 in. bore cases with stock stud pattern are ideal for the S&S 124 in. Hot Set Up Kit for stock crankcases. Select the Twin Cam 88A crankcase designed specifically for your HD® bike model.
Not Yet Reviewed
$2,152.95
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$2,182.95
Twin Power offers OEM replacement cylinders for your motorcycle. Each Twin Power cylinder is designed to meet or exceed OEM specifications. These cylinders are available in a black or natural finish. Cylinder material and liner material vary depending on the application. Twin Power cylinders are the quality replacement your motorcycle deserves to keep it running like new.
Not Yet Reviewed
$354.04
Boost your engine's performance with S&S Cycle's Twin Cam cylinders. The design, finish and workmanship of these cylinder replacements feature many improvements over stock units, including sturdier walls that are far less prone to warpage. Straighter, sturdier walls equals a better seal, and fit for pistons, and piston rings. An improved machining process also ensures a better surface for both the head and base gaskets. These cylinders feature ductile cast-iron sleeves in aluminum castings and are offered in black wrinkle finish. Select the cylinders designed to fit your specific HD® model.
Not Yet Reviewed
$897.95
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