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ACDelco GM Genuine Parts replacement bolts are available for a variety of applications, including transmission torque converter housings. Installing factory-recommended hardware helps to ensure the same performance, durability, and service life you expect from General Motors.
( 15 )
$3.99
ICT Billet camshaft thrust retainer plate bolts are high-quality replacements for your stock fasteners. If you're doing an engine rebuild, cam swap project, or maybe misplaced your stock bolts—why not upgrade with a premium set of camshaft thrust retainer plate fasteners from ICT Billet?
( 3 )
$25.99
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.
( 15 )
$41.99
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$149.99
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.
( 175 )
$35.99
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$414.99
Do you need main cap fasteners for your Ford engine? Ford Performance Parts main stud and bolt kits are available for a variety of Ford V8s. Their kits contain all main bolts, studs, washers, and nuts for one block. Secure your main caps the right way with Ford Performance Parts main stud and bolt kits. Note: some bolts and studs are torque-to-yield and must be replaced after each use.
( 1 )
$61.99
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$62.99
Make sure your crankshaft is secured properly using a set of these Summit Racing™ main bolt kits. They include high-tensile strength bolts that deliver maximum reliability where you need it the most. The bolt kits are designed for use with stock or aftermarket main caps, and can be installed without any modifications.
( 10 )
$209.70
ARP Pro Series main bolts are application-specific and rated at 190,000 psi. Designed for use in competition engines, as well as 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.
( 14 )
$47.99
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$372.99
PRW Main Cap Side Bolts uses premium grade Custom 4135 Steel rated at "aircraft" quality. Their side bolts are then specially heat-treated to 180,000 psi. This heat-treating procedure allows for total heat penetration which results in a stronger, more superior stud compared to lesser quality studs from other manufacturers. PRW main cap side bolts are then centerless ground after being heat treated and then thread rolled which assures better fatigue strength than having this process done before heat treatment. This manufacturing process may cost more to do but the results are well worth the extra effort.
Not Yet Reviewed
$25.98
ICT Billet main seal adapter bolts are available for your LS engine. If your stock bolts have been misplaced during a rebuild or aren't looking reusable, ICT Billet can help.
Not Yet Reviewed
$25.99
Summit Racing™ Extreme Duty main cap bolts are engineered to withstand the stress and abuses that high-horsepower engines endure. These fastener kits come with all necessary bolts, washers, lubricant, and instructions to ensure maximum performance and reliability. Order the hardware recommended for your year/make and engine application. Extreme Duty fasteners feature: * 190,000 psi tensile strength minimum * High-strength chromoly steel utilized for all products * Precision manufacturing processes ensure consistent product performance * All studs are twice straightened to guarantee straightness * Threads are rolled after heat treatment for high strength * Tensile and yield strength tested after thread rolling * Uniformly applied black oxide surface finish * Anti-rust oil coating to protect fasteners from corrosion
Not Yet Reviewed
$39.99
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$59.99
Summit Bucks
ACDelco GM Genuine Parts offers multi-purpose bolts for a variety of applications, including many Buick, Cadillac, Chevrolet, GMC, Oldsmobile, and Pontiac vehicles. These replacement engine crankshaft main bearing cap fasteners are machined from steel and tested to rigorous standards for fitment and performance. They are the same OE bolts installed during the production of or validated by General Motors for GM vehicles. Sold individually.
Not Yet Reviewed
$29.99
Maintain proper main cap alignment and tightness using these Dart main bolts. They're manufactured from quality materials and are machined to strict specifications to reduce wear and tear on your block threads.
Not Yet Reviewed
$1.48
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$8.08
Milodon premium-grade bolts are forged from 8740 chromoly steel. They are ground and thread-rolled after heat-treatment to ensure exacting tolerances. These bolts feature a 1/2 in. hex head for greater socket clearance, a wide flange area under the head for greater load spread, and a black oxide finish.
Not Yet Reviewed
$234.95
Edelbrock offers main cap bolts, nuts, and studs for engine block and cylinder head applications. This hardware comes standard with the purchase of Edelbrock race blocks, but is also available separately as replacements for worn or damaged original fasteners.
Not Yet Reviewed
$8.95
Strengthen the side cover of your Briggs and Stratton engine using Stage 8 locking side cover bolt kits. They're manufactured from premium Grade 8 steel, so you won't have to worry about them breaking under pressure.
Not Yet Reviewed
$26.09
Dorman main cap bolts keep your engine main caps in place. Featuring quality steel construction, these fasteners offer a direct replacement for a proper fit every time, and each bolt undergoes material testing to conform to product standards. When rebuilding your engine, replace your main cap fasteners with the reliability and strength of Dorman bolts.
Not Yet Reviewed
$52.99
Engine Works LS main cap bolt kits offer a complete set of bolts for one engine. Each kit includes outer main cap studs, inner main cap bolts, and side main cap bolts.
Not Yet Reviewed
$87.46
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
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.
( 390 )
$34.99
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$376.99
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
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
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
( 21 )
$2,299.99
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$3,799.99
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
( 1 )
$4,550.15
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$5,565.20
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.
( 1 )
$3,382.99
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$3,780.99
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