Engine Blocks & Parts | Summit Racing

ARP Main Stud Kits 154-5503

ARP Main Stud Kits 154-5503

Main Studs, 2-Bolt Main, for use with Windage Tray, Front Sump, Ford, 351W, Kit

Part Number: ARP-154-5503

4.5 out of 5 stars ( 4 )

Estimated Ship Date: Tomorrow

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Howards Cams Main Cap Support Straps H350FS

Front Main Cap Straps, Chevy, Each.

Part Number: HRS-H350FS

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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Howards Cams Extreme Billet Main Caps H350F

Main Cap, Billet Steel, Front, Straight Outer Bolts, 2-Bolt, Chevy, Small Block, Each

Part Number: HRS-H350F

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

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Milodon Main Caps 11053

Main Cap, Ductile Iron, Front, Angled Outer Bolts, 4-Bolt, Chevy, Small Block, Each

Part Number: MIL-11053

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Jul 20, 2026 if ordered today

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Estimated Ship Date: Jul 20, 2026 if ordered today

Top Street Performance Oil Galley Plugs 81081-2

GM GEN III/IV LS BILLET ALUMINUM FRONT OIL GALLEY PLUG

Part Number: TSN-81081-2

Not Yet Reviewed

Estimated Ship Date: Jun 29, 2026 if ordered today

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Estimated Ship Date: Jun 29, 2026 if ordered today

Cylinder Works Cylinders 422-30007

CYL WORKS STD BORE FRONT CYL C

Part Number: CLW-30007

Not Yet Reviewed

Estimated Ship Date: May 20, 2026 if ordered today

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Estimated Ship Date: May 20, 2026 if ordered today

Twin Power Powersports Cylinders 492589

66-79 Shovelhead Black Cylinder 74in Front Replaces H-D 16485-74A

Part Number: TWP-492589

Not Yet Reviewed

Estimated Ship Date: May 27, 2026 if ordered today

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Estimated Ship Date: May 27, 2026 if ordered today

Milodon Main Caps 11153

Main Cap, Ductile Iron, Front, Straight Outer Bolts, 2-Bolt, Large Journal, Chevy, Small Block, Each

Part Number: MIL-11153

Not Yet Reviewed

Estimated Ship Date: Jul 20, 2026 if ordered today

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Estimated Ship Date: Jul 20, 2026 if ordered today

Howards Cams Extreme Billet Main Caps H454-1

Main Cap, Billet Steel, Front, Straight Outer Bolts, 4-Bolt, Chevy, Big Block, Each

Part Number: HRS-H454-1

Not Yet Reviewed

Estimated Ship Date: Jun 9, 2026 if ordered today

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Estimated Ship Date: Jun 9, 2026 if ordered today

Milodon Main Caps 11501

Main Caps, Front Position, Straight, 4-bolt, Ductile Iron, Pontiac, 421, 428, 455, Each

Part Number: MIL-11501

Not Yet Reviewed

Estimated Ship Date: Jul 20, 2026 if ordered today

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Estimated Ship Date: Jul 20, 2026 if ordered today

Dart SHP Special High Performance Individual Main Caps 32791020

Main Cap, Front, Ductile Iron, 2-Bolt Mains, Chevy, SHP Dart Block, Each

Part Number: DRT-32791020

Not Yet Reviewed

Estimated Ship Date: Jun 25, 2026 if ordered today

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Estimated Ship Date: Jun 25, 2026 if ordered today

ARP Main Cap Fasteners 154-5611

Ford New Boss 302 w/front sump oil pan msk

Part Number: ARP-154-5611

5.0 out of 5 stars ( 1 )

Estimated Ship Date: May 22, 2026 if ordered today

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Estimated Ship Date: May 22, 2026 if ordered today

Milodon Main Caps 11506

Main Caps, Front Position, Straight, 4-bolt, Ductile Iron, Pontiac, 350, 389, 400, Each

Part Number: MIL-11506

Not Yet Reviewed

Estimated Ship Date: Jul 20, 2026 if ordered today

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Estimated Ship Date: Jul 20, 2026 if ordered today

Dart Main Caps 32773020H

MAIN CAP FRONT

Part Number: DRT-32773020H

Not Yet Reviewed

Estimated Ship Date: Jun 25, 2026 if ordered today

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Estimated Ship Date: Jun 25, 2026 if ordered today

HardDrive Cylinders 820-51558

Cylinder, Front, 3.498 in. Bore, Stock Length, Aluminum, Natural, Cast Iron Liner, Harley-Davidson®, Each

Part Number: HDD-820-51558

Not Yet Reviewed

Estimated Ship Date: May 13, 2026 if ordered today

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Estimated Ship Date: May 13, 2026 if ordered today

Twin Power Powersports Cylinders 492868

78-84 Big Twin Shovelhead Cylinder 80in Front Black Replaces H-D 16494-78

Part Number: TWP-492868

Not Yet Reviewed

Estimated Ship Date: May 22, 2026 if ordered today

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Estimated Ship Date: May 22, 2026 if ordered today

Dart Main Caps 32743020H

main cap,Main Cap-Front-LSNext2-1/2-350MB-Steel HONED READY

Part Number: DRT-32743020H

Not Yet Reviewed

Estimated Ship Date: Jun 25, 2026 if ordered today

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Estimated Ship Date: Jun 25, 2026 if ordered today

HardDrive Products Powersports Cylinders 820-51554

80 SHOVELHEAD FRONT CYLINDER

Part Number: HDD-820-51554

Not Yet Reviewed

Estimated Ship Date: May 11, 2026 if ordered today

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Estimated Ship Date: May 11, 2026 if ordered today

Dart Main Caps 32744020H

main cap,Main Cap-Front-LSNext2-1/2-350MB-LS Bore Steel HONED READY

Part Number: DRT-32744020H

Not Yet Reviewed

Estimated Ship Date: Jun 25, 2026 if ordered today

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Estimated Ship Date: Jun 25, 2026 if ordered today

Dart Main Caps 32744020

main cap,Main Cap-Front-LSNext2-1/2-350MB-LS Bore Steel

Part Number: DRT-32744020

Not Yet Reviewed

Estimated Ship Date: Jun 25, 2026 if ordered today

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Estimated Ship Date: Jun 25, 2026 if ordered today

Dart Main Caps 32743020

main cap,Main Cap-Front-LSNext2-1/2-350MB-Steel

Part Number: DRT-32743020

Not Yet Reviewed

Estimated Ship Date: Jun 25, 2026 if ordered today

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Estimated Ship Date: Jun 25, 2026 if ordered today

Ford Performance Parts Boss 302 Engine Blocks for 1985-1995 MUSTANG - M-6010-BOSS302

Engine Block, Cast Iron, 4-Bolt Mains, 4.000 in. Diameter Bore, 1-Piece Rear Main Seal, Ford, Small Block, Each

Part Number: FMS-M6010BOSS302

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Tomorrow

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Dart Race Series Big Block Chevy Aluminum Bare Blocks 31264655

Engine Block, Race Series, Aluminum, 4-Bolt Mains, 10.2 Deck, 4.600 in. Dia., Bore, 2-Piece Seal, Chevy, Each

Part Number: DRT-31264655

Not Yet Reviewed

Estimated Ship Date: Jun 19, 2026 if ordered today

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Estimated Ship Date: Jun 19, 2026 if ordered today

Dart Big M Sportsman Big Block Chevy Cast Iron Bare Blocks 31223444

Engine, Bare Block, Big M Sportsman, Stock/OEM, 4.50 in. Bore, Cast Iron, 4-Bolt Main, 2-Piece Rear Main Seal, Chevy, Big Block, Each

Part Number: DRT-31223444

5.0 out of 5 stars ( 1 )

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Need It Sooner? We recommend these similar substitute parts:

BluePrint Engines GM Big Block Compatible Bare Engine Blocks BPP12110324

Not Yet Reviewed

Estimated Ship Date: Jun 18, 2026

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Howards Cams Extreme Billet Main Caps H350S

Main Caps, Billet Steel, 3-Center, Splayed Outer Bolts, 4-Bolts, Chevy, Small Block, Set of 3

Part Number: HRS-H350S

3.33 out of 5 stars ( 3 )

Estimated Ship Date: Tomorrow

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Estimated Ship Date: Tomorrow