Engine Blocks & Parts | Summit Racing

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.

4.83 out of 5 stars ( 6 )

$4,085.68

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$4,291.31

Dart Big M2 Big Block Chevy Cast Iron Bare Blocks

Dart engineered the Big M to be the strongest, most reliable, and easiest-to-build big block on the market. The Dart Big M2 big block Chevy cast iron bare blocks are designed from the ground up as a true racing engine block which can be used with standard off the shelf big block components. They're cast from premium high-strength iron and beefed up in all the critical areas. A competition oiling system ensures adequate lubrication to the main bearings at high RPM. Choose from the available deck height and cylinder bore diameter options.  

Not Yet Reviewed

$3,599.99

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$4,319.99

Dart Big M2 Pro Series Big Block Chevy Cast Iron Bare Blocks

Dart engineered the Big M to be the strongest, most reliable, and easiest-to-build big block on the market. Dart Big M2 Pro Series big block Chevy cast iron bare blocks are designed from the ground up as a true racing engine block which can be used with standard off the shelf big block components. The Big M2 is cast from premium high-strength iron and beefed up in all the critical areas. A competition oiling system ensures adequate lubrication to the main bearings at high RPM. With deck heights from 9.600 in. to 11.100 in., a +.600 in. raised cam location, spread oil pan rails and bore sizes up to 4.600 in., the Big M Pro gives you the versatility to build a wide variety of engine combinations.

Not Yet Reviewed

$3,869.99

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$4,334.99

Dart Big M Sportsman Big Block Chevy Cast Iron Bare Blocks

The foundation for a better big block build begins with Dart Big M Sportsman Big Block Chevy cast iron bare blocks. Dart engineered the Big M to be the strongest, most reliable, and easiest to build big blocks on the market. The Dart Big M Sportsman blocks feature: * Standard 9.800 in. and tall 10.200 in. deck heights available for Stroker engines * Standard 4.250 in., 4.500 in., or 4.600 in. bore sizes with Siamesed extra thick cylinder walls to resist cracking and improve ring seal (minimum .300 in. thick with 4.625 in. bore) * Uses +.300 in. tall Gen VI style lifters. Modifications for Gen IV style are also available * Scalloped outer water jacket walls improve coolant flow around the cylinder barrels to equalize temperatures * 4-bolt ductile iron main caps have splayed outer bolts for extra strength * True priority main oil system lubricates the main bearings before the lifters * Oil filter pad is drilled and tapped for an external oil pump * Lifter valley head stud bosses prevent blown head gaskets * Rear main cap uses standard oil pump and two-piece seal, no adapter required * Mechanical fuel pump boss, clutch linkage mounts, and side and front motor mounts simplify installation in chassis * Dual oil pan bolt patterns fit standard and notched oil pans * Coated cam bearings, freeze plugs and dowels not included * Small bore 396 version available

Not Yet Reviewed

$3,599.99

Dart Race Series Big Block Chevy Aluminum Bare Blocks

What makes the Dart Race Series big block Chevy aluminum bare blocks the top choice for serious competition engines? They're based on the Chevrolet big block V8 design, but with added features and Dart's implemented advanced engineering! Key features of these Dart Race Series blocks include: * Cast from virgin 355-T61 aerospace alloy for strength * Ductile iron sleeves with extra thick cylinder walls promote excellent ring seal * Reinforcing ribs strengthen the lifter valley bellhousing flange * Inboard valley head stud bosses improve gasket sealing * Priority main oiling system delivers oil directly to the crankshaft bearings to enhance reliability at high engine speeds * Standard BBC cam journals, up to 60mm with raised cam options available * Standard .842 in. BBC lifter bores, other options available * Available with or without distributor provision * Steel 4-bolt main caps with splayed outer bolts for extra strength (light-weight aluminum caps also available) * Mechanical fuel pump boss, clutch linkage mounts, and side and front motor mounts simplify installation in chassis * Dual oil pan bolt patterns fit standard and notched oil pans

Not Yet Reviewed

$6,999.99

Dart Big M Big Block Chevy Aluminum Bare Blocks

Dart aluminum big block V8s deliver big power in a lightweight package. And, based on the Chevrolet big block V8 design, Dart's Big M Big Block Chevy aluminum bare blocks are the strongest, most durable and easiest to build aluminum blocks available--making them a top choice for serious competition! Dart Big M Big Block Chevy Aluminum Bare Block features: *Cast from virgin 355-T61 aerospace alloy for superior strength and integrity * Standard 9.800 in. and tall 10.200 in. deck heights available (for stroker engines) * Standard 4.250 in., 4.500 in. or 4.600 in. bore sizes * Ductile iron sleeves with extra thick cylinder walls promote excellent ring seal * Reinforcing ribs strengthen lifter valley bellhousing flange * Inboard valley head stud bosses improve gasket sealing * Priority main oiling system delivers oil directly to the crankshaft bearings to enhance reliability at high engine speeds * Steel 4-bolt main caps with splayed outer bolts for extra strength (ductile iron or aluminum caps are also available) * Dual oil pan bolt patterns fit standard and notched oil pans

Not Yet Reviewed

$6,999.99

Dart Big M Mark IV Big Block Chevy Full Water Cast Iron Bare Blocks

Dart is committed to producing the best engine components available, including the Dart Big M Mark IV big block Chevy full water cast iron bare blocks--engineered for applications where water between the bores is a requirement. Siamese bore versions are also available for larger bore applications. Features of the Dart Big M Mark IV big blocks include: * Standard 9.800 in. and tall 10.200 in. deck heights available * Standard 4.250 in. or 4.600 in. bore sizes * MRK IV blocks use the 2-piece rear seal design, while Gen V and Gen VI blocks use a 1-piece seal and a different timing cover pattern * 4-bolt main bearing caps in ductile iron have splayed outer bolts for extra strength * True priority main oiling (lubricates the main bearings before the lifters) * Mechanical fuel pump boss, clutch linkage mounts, and side and front motor mounts simplify installation in chassis * Lifter valley bosses for OE style roller lifters and retainer; (Non-Siamese blocks only)

Not Yet Reviewed

$4,334.99

Brodix Cylinder Heads Aluminum Big Block Chevy Engine Blocks

Brodix Cylinder Heads aluminum big block Chevy engine blocks feature Brodix's proprietary A-356 virgin aluminum that is designed to ensure the maximum potential for strength and repairability. They are manufactured right here in the USA, are oil-restricted from the front, and can be machined for roller camshaft bearings. They feature the strongest main webbing in the business, 1044 steel billet main caps, splayed center main caps, and accept both standard and stroker oil pans. These Brodix aluminum engine blocks are also available with a standard or raised camshaft location, and have 1/4 in. thick registers to allow for bore sizes, up to a whopping 4.625 in. Specify the deck height and cam location before ordering. Let Brodix satisfy your high performance, high-horsepower needs with one of these fabulous aluminum big block Chevy engine blocks.

Not Yet Reviewed

$6,669.99

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$10,023.99

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

5.0 out of 5 stars ( 11 )

$3,399.99

Stef's Rear Main Seal Adapter Kits

Stef's rear main seal adapter kits are designed to install an early 2-piece style crankshaft into a late model, one-piece engine block. They are manufactured from billet aluminum and require no drilling or welding for installation.

4.0 out of 5 stars ( 2 )

$148.99

Mr. Gasket Freeze Plug Kits

Mr. Gasket brass freeze plug kits eliminate any chance of rusted-out engine expansion plugs. Though they're designed for marine applications, these kits are ideal for long-term stored vehicles, as well as for everyday street use. The plugs guard your engine against freeze damage and cracks when there is insufficient antifreeze protection. Each kit includes all of the plugs needed for a complete (and specific) engine block—for applications from 1955 and up.

Not Yet Reviewed

$51.19

Dart Little M2 Small Block Chevy Cast Iron Bare Blocks

The Dart Little M is designed from the ground up as a true racing engine block which can be used with standard off-the-shelf small block components. These small block Chevy bare blocks are cast from premium high-strength iron and beefed up in all the critical areas. A competition oiling system ensures adequate lubrication to the main bearings at high RPM. Front and rear external oil feed, crossover and restrictor provision simplify plumbing with external pumps. Select from various options: * Chevy 350 or 400 main journal type * Aftermarket or stock/OEM standard deck style * Standard or tall deck height * Cylinder bore dimensions

Not Yet Reviewed

$3,999.99

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$6,934.99

World Products PBM Performance Block Kits

World Products PBM Performance block kits are a great way to begin your next engine build. These kits contain accessory parts like freeze plugs, cam plugs, oil galley plugs, cylinder head dowels, timing cover dowels, and bellhousing dowels. With all the little parts assembled for you, it's time to get started! Kits are available for small block Ford or big block Chevy engine applications.

3.25 out of 5 stars ( 4 )

$30.67

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

COMP Cams Engine Finishing Kits

These COMP Cams engine finishing kits contain the often-forgotten components missing during final engine assembly. They include parts like Woodruff keys, cylinder head alignment dowels, cam bolts, timing cover dowels, and oil pump dowels. Available for small and big block Chevrolet and small block Ford engines, the COMP Cams engine finishing kits make engine assembly easy.

4.73 out of 5 stars ( 66 )

$18.95

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$54.95

Dart Block Sleeves

Dart block sleeves are durable and reliable! Dart replacement sleeves are the same premium sleeves as those used in their race series blocks. Fit your aluminum blocks with the strength of Dart cast iron block sleeves.

Not Yet Reviewed

$156.99

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$208.99

Engine Works Engine Finishing Kits

Save time and money with Engine Works engine finishing kits. During an engine tear down and the cleaning process can lead to broken, bent, distorted, or lost service parts. These items can be troubling to any engine re-builder, especially when they are difficult to obtain. That is why Engine Works offers many of the hard-to-find OEM service parts you need in each engine hardware finishing kit. Available for small and big block Chevrolet and small block Ford engines, all hardware in each engine finishing kit is manufactured to precise OEM dimensions to make engine assembly easy.

Not Yet Reviewed

$38.71

Pioneer Performance Freeze Plugs

These Pioneer performance freeze plugs are designed by engine rebuilders, for engine rebuilders. Several types of freeze plugs are offered in a choice of materials and sizes for a large variety of applications.

4.74 out of 5 stars ( 58 )

$29.99

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$43.99

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 )

$3,842.02

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$5,173.48

Dart Freeze Plugs

Durable steel freeze plugs from Dart work like expansion plugs. As we all know, water expands when it turns to ice, and if the coolant in your vehicle doesn't have enough antifreeze protection, it can freeze and then crack the engine block. Dart freeze plugs are designed to pop out under such conditions to relieve the pressure on the block, thus protecting it against freeze damage.

4.0 out of 5 stars ( 11 )

$1.99

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.

4.81 out of 5 stars ( 105 )

$30.99

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.

4.0 out of 5 stars ( 16 )

$299.99

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.

4.86 out of 5 stars ( 177 )

$46.99

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$77.99

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.

4.58 out of 5 stars ( 168 )

$19.99

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$27.99