Engine Blocks & Parts | Summit Racing

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.

4.8 out of 5 stars ( 399 )

$34.99

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$376.99

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.

4.87 out of 5 stars ( 181 )

$33.99

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$414.99

ARP Pro Series Main Bolts

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.

5.0 out of 5 stars ( 15 )

$47.99

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$100.99

ARP Rear Motor Cover Fasteners

ARP rear motor cover fasteners are designed to attach the rear motor cover on your Chevrolet LS series engines. They are available in your choice of steel or stainless steel, and with either hex or 12-point fastener head styles.

5.0 out of 5 stars ( 4 )

$23.99

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$28.99

ARP Powersports Main Cap Studs

Why use ARP main cap studs for your motorcycle or UTV? They're machined from 8740 chromoly steel, heat-treated to 190,000 psi tensile strength, and precision J-form thread-rolled to create fasteners with the strongest threads available. The studs eliminate main cap walk and fretting—and offer the ability to obtain more accurate torque readings, easier engine assembly, and the proper alignment of caps. Order the set recommended for your powersports machine!

Not Yet Reviewed

$115.99

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$183.99

ARP Crankcase Thru-Bolt Kits

Give your engine the strength and stability it deserves with ARP crankcase thru-bolts—premium fasteners engineered to outperform and outlast factory hardware. Manufactured from special alloy steel and heat treated for exceptional strength and durability, ARP through bolts provide a far more secure and rigid connection between the crankcase halves and main bearing structure. Whether you're rebuilding for reliability or pushing for higher output, ARP crankcase through bolts deliver unmatched clamping force, precision, and peace of mind.

Not Yet Reviewed

$1,123.99

Ford Performance Parts 351 Aluminum Windsor Engine Blocks

Ford Performance Parts 351 Aluminum Windsor engine blocks feature cast iron sleeves and are available in 9.2 in. or 9.5 in. deck heights. The 9.2 in. version of Ford's Z351 aluminum Windsor blocks is great for smaller displacement builds without the penalty of a taller deck. Both versions are cast from high strength 356-T6 grade aluminum and use splayed, 4-bolt, steel main caps on number 2-3-4 main bearings. The blocks are user friendly and designed to use conventional Windsor components like cams, timing chains, timing chain covers, oil pans, and oil pumps. With a weight of as little as 106 lbs., they can be nearly 90 lbs. lighter than an iron Ford Performance Parts BOSS 351 block. Additional features include: * 2-bolt main caps on number 1 and 5 main bearings * ARP studs on all inner main caps * ARP bolts on number 2-3-4 splayed outer positions * 4.110-4.115 in. bore as delivered--finish at 4.125 in. * 2.75 in. crankshaft main journal diameter (351C) * 2.9415-2.9425 in. diameter finished main bearing bore * Lifter bores finished 0.8753-0.8768 in. * 2.2032-2.2052 in. diameter cam bearing bores * Use cam bearing PN M-6261-J351 or M-6261-R351 * Wet sump oiling system * Maximum stroke 9.2 in. deck height: 4.000 in. * Maximum stroke 9.5 in. deck height: 4.250 in. * Weight 9.2 in. deck height: 106 lbs. * Weight 9.5 in. deck height: 118 lbs.

4.5 out of 5 stars ( 2 )

$6,510.99

World Products Merlin Gen VI Engine Blocks

World Products has improved virtually every area of the new Merlin Gen VI engine blocks, producing one of the most technologically advanced and best-performing iron BBC engines available today! New features on these big block Chevy engines include thicker main webs for increased strength and thicker cylinder walls (nominally .250 in. @ 4.600 in. bore). They can utilize OE roller lifters or +0.300 in. tall aftermarket tie bar lifters. The World Products Merlin Gen VI engine blocks also include a standard Mark IV fuel pump boss for those wanting to keep a mechanical fuel pump.

5.0 out of 5 stars ( 1 )

$3,842.02

World Products Merlin IV Engine Blocks

World Products has made improvements to virtually every area of the new Merlin IV engine blocks—with the goal of producing the most technologically advanced and best-performing iron BBC block available today! New features include thicker main webs for increased strength and thicker cylinder walls which are nominally .310 in. @ 4.600 in. bore. In addition to the standard BBC 9.800 in. and 10.200 in. deck heights, new heights measuring 9.500 in., 9.850 in. and 10.250 in. are now available. The World Products Merlin IV engine blocks are also available with a 2.120 in. BBC cam journal and standard .842 in. lifter bores, or with a 2.283 in. journal for a 55mm Babbitt cam and .904 in. lifter bores. World Products has added a front oil feed for dry sump systems, and relocated the lifter oil feeds and restrictor provisions to the front of the blocks.

5.0 out of 5 stars ( 3 )

$4,645.49

World Products Man O'War Bare Blocks

When it comes to Ford 302/351 replacements, these Man O'War bare blocks are without a doubt the most advanced cast iron blocks on the market today. They were designed in collaboration with leading Ford race teams, yet are also engineered for 100 percent reliability on the street. Like the original Man O' War, they deliver performance!

5.0 out of 5 stars ( 1 )

$4,494.05