Engine Blocks & Parts | Summit Racing

World Products Merlin IV Engine Blocks 095000

World Products Merlin IV Engine Blocks 095000

Engine Block, Cast Iron, 4-Bolt Mains, 4.245 in. Diameter Bore, 2-Piece Rear Main Seal, Chevy, Big Block, Each

Part Number: WRL-095000

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Apr 6, 2026 if ordered today

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Estimated Ship Date: Apr 6, 2026 if ordered today

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

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ARP High Performance Series Main Bolts 260-5401

Main/Case Bolts, Pro Series, 2-Bolt Main, Hex Head, Subaru, 2.0, 2.2, 2.5L, Kit

Part Number: ARP-260-5401

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PRW Billet Steel Main Girdles 9045401

Main Cap Girdle, 1045 Billet Steel, No Hardware, for Chevy Big Block 454, Each

Part Number: PQX-9045401

Not Yet Reviewed

Estimated Ship Date: Apr 28, 2026 if ordered today

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Estimated Ship Date: Apr 28, 2026 if ordered today

World Products 351 Ford Man O'War Blocks 087182

Engine Block, Cast Iron, 4-Bolt Mains, 4.115 in. Diameter Bore, 1-Piece Rear Main Seal, Ford, Small Block, Each

Part Number: WRL-087182

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Estimated Ship Date: Apr 6, 2026 if ordered today

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Summit Racing™ SPC Ford 351W Engine Block SUM-150205

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World Products 351 Ford Man O'War Blocks 087150

Engine Block, Cast Iron, 4-Bolt Mains, 3.990 in. Diameter Bore, 1-Piece Rear Main Seal, Ford, Small Block, Each

Part Number: WRL-087150

Not Yet Reviewed

Estimated Ship Date: Apr 6, 2026 if ordered today

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Estimated Ship Date: Apr 6, 2026 if ordered today

World Products 302 C.I.D. Ford Man O'War Blocks 087110

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

Part Number: WRL-087110

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Estimated Ship Date: Apr 6, 2026 if ordered today

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World Products 351 Ford Man O'War Blocks 087172

Engine Block, Cast Iron, 4-Bolt Mains, 3.990 in. Diameter Bore, 1-Piece Rear Main Seal, Ford, Small Block, Each

Part Number: WRL-087172

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Apr 6, 2026 if ordered today

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Estimated Ship Date: Apr 6, 2026 if ordered today

Melling Cylinder Sleeves CSL165

Cylinder Sleeve, Cast Iron, 3.875 in. Bore I.D., 0.094 in. Wall Thickness, 7.000 in. Length, Each

Part Number: MEL-CSL165

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Dart Iron Eagle Mopar Gen III Cast Iron Bare Blocks 31612311

Engine Block, Cast Iron, 4-Bolt Mains, 4.125 in. Bore, 1-Piece Rear Seal, Non-VVT, Dodge, RAM, Hemi, Gen III, Each

Part Number: DRT-31612311

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Brian Tooley Racing Main Cap Fasteners BTR-LSMAINBOLTKIT

BTR STOCK REPLACEMENT LS MAIN BOLT KIT

Part Number: BTC-S0548

Not Yet Reviewed

Estimated Ship Date: Mar 12, 2026 if ordered today

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Estimated Ship Date: Mar 12, 2026 if ordered today

World Products Man O'War Bare Blocks 087082

Engine Block, Cast Iron, 4-Bolt Mains, 4.115 in. Diameter Bore, 2-Piece Rear Main Seal, Ford, Small Block, Each

Part Number: WRL-087082

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Apr 6, 2026 if ordered today

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Estimated Ship Date: Apr 6, 2026 if ordered today

Melling Cylinder Sleeves CSL234

Cylinder Sleeve, Cast Iron, 3.625 in. Bore I.D., 0.125 in. Wall Thickness, 7.000 in. Length, Each

Part Number: MEL-CSL234

4.0 out of 5 stars ( 1 )

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Melling Cylinder Sleeves CSL121

Cylinder Sleeve, Cast Iron, 4.320 in. Bore I.D., 0.094 in. Wall Thickness, 6.750 in. Length, Each

Part Number: MEL-CSL121

5.0 out of 5 stars ( 1 )

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Melling Freeze Plugs MPS-154

Shallow Plug - Steel - Each

Part Number: MEL-MPS-154

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Melling Cylinder Sleeves CSL205

Cylinder Sleeve, Cast Iron, 3.188 in. Bore I.D., 0.125 in. Wall Thickness, 6.500 in. Length, Each

Part Number: MEL-CSL205

5.0 out of 5 stars ( 1 )

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Chevrolet Performance Bowtie Big Block Chevy Cast Iron Engine Blocks 19212192

Engine Block, Cast Iron, 4-Bolt Mains, 4.494 in. Diameter Bore, 1-Piece Rear Main Seal, Chevy, Big Block, Each

Part Number: NAL-19212192

4.5 out of 5 stars ( 2 )

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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: May 22, 2026 if ordered today

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Estimated Ship Date: May 22, 2026 if ordered today

PRW Main Cap Girdles 0944800

Main Cap Girdle, Steel, Black Oxide, Hardware Included, Ford, Kit

Part Number: PQX-0944800

2.67 out of 5 stars ( 3 )

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World Products Merlin IV Engine Blocks 091102

Engine Block, Cast Iron, Nodular Iron Splayed 4-Bolt Mains, 4.595 in. Bore, 2-Piece Seal, 9.800 in. Deck, Chevy, Big Block, Each

Part Number: WRL-091102

Not Yet Reviewed

Estimated Ship Date: Apr 6, 2026 if ordered today

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Estimated Ship Date: Apr 6, 2026 if ordered today

World Products Merlin IV Engine Blocks 091101

Engine Block, Cast Iron, Nodular Iron Splayed 4-Bolt Mains, 4.495 in. Bore, 2-Piece Seal, 9.800 in. Deck, Chevy, Big Block, Each

Part Number: WRL-091101

Not Yet Reviewed

Estimated Ship Date: Apr 6, 2026 if ordered today

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Estimated Ship Date: Apr 6, 2026 if ordered today

Need It Sooner? We recommend these similar substitute parts:

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

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World Products Merlin IV Engine Blocks 091103

Engine Block, Cast Iron, 4-Bolt Mains, 4.245 in. Diameter Bore, 9.800 in. Deck, Nodular Iron Main Caps, 1-Piece Rear Main Seal, Chevy, Big Block, Each

Part Number: WRL-091103

Not Yet Reviewed

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Dorman Rear Main Seal Housings 635-786

Rear Main Seal Cover Kit

Part Number: RNB-635-786

Not Yet Reviewed

Estimated Ship Date: Mar 16, 2026 if ordered today

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Estimated Ship Date: Mar 16, 2026 if ordered today

Melling Freeze Plugs MPS-135

Shallow Plug - Steel - Each

Part Number: MEL-MPS-135

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Melling Engine Expansion Plug Kits MPE-110R

Engine Expansion Plugs, Steel, Ford, Mercury, Kit

Part Number: MEL-MPE-110R

Not Yet Reviewed

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Melling Engine Expansion Plug Kits MPE-132BR

Freeze Plug Kits Bagged - Brass

Part Number: MEL-MPE-132BR

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