Engine Blocks & Parts | Summit Racing

World Products Merlin IV Engine Blocks 095017

World Products Merlin IV Engine Blocks 095017

Engine Block, Cast Iron, 4-Bolt Mains, 4.595 in. Diameter Bore, 9.850 in. Deck, Billet Steel Main Caps, 2-Piece Rear Main Seal, Chevy, Big Block, Each

Part Number: WRL-095017

Not Yet Reviewed

Estimated Ship Date: Feb 25, 2026 if ordered today

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Estimated Ship Date: Feb 25, 2026 if ordered today

World Products 351 Ford Man O'War Blocks 087160

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

Part Number: WRL-087160

Not Yet Reviewed

Estimated Ship Date: Feb 25, 2026 if ordered today

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Estimated Ship Date: Feb 25, 2026 if ordered today

PRW Billet Steel Main Girdles 9035001

MAIN GIRDLE, BILLET STEEL, CHEV 350, 2pc Rear Seal, Does Not incl Studs or Fasteners

Part Number: PQX-9035001

Not Yet Reviewed

Estimated Ship Date: Mar 30, 2026 if ordered today

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Estimated Ship Date: Mar 30, 2026 if ordered today

Dart SHP Special High Performance Small Block Ford Cast Iron Bare Blocks 31375235

Engine Block, Cast Iron , 4-Bolt Mains, 4.125 in. Bore, 1-Piece Rear Main Seal, Ford 351, Small Block, Each

Part Number: DRT-31375235

5.0 out of 5 stars ( 3 )

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Ford Performance Parts Coyote Cast Iron Engine Blocks for 2011-2017 MUSTANG - M-6010-M50X

Engine Block, Cast Iron, 6-Bolt Mains, 3.630 in. Diameter Bore, 1-Piece Rear Main Seal, Ford, Coyote Modular, Each

Part Number: FMS-M-6010-M50X

Not Yet Reviewed

Estimated Ship Date: Feb 23, 2026 if ordered today

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Estimated Ship Date: Feb 23, 2026 if ordered today

World Products Motown LS Iron Blocks 084080

Engine Block, Cast Iron, 4-Bolt Mains, 3.995 in. Diameter Bore, 2-Piece Rear Main Seal, Chevy, Small Block, Each

Part Number: WRL-084080

Not Yet Reviewed

Estimated Ship Date: Feb 9, 2026 if ordered today

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Estimated Ship Date: Feb 9, 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

Not Yet Reviewed

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Dart Iron Eagle Mopar Gen III Cast Iron Bare Blocks 31622321

Engine Block, Cast Iron, 4-Bolt Mains, 4.250 in. Bore, 1-Piece Rear Seal, VVT, Dodge, RAM, Hemi, Gen III, Each

Part Number: DRT-31622321

Not Yet Reviewed

Estimated Ship Date: Mar 6, 2026 if ordered today

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Estimated Ship Date: Mar 6, 2026 if ordered today

Edelbrock LS Bare Race Blocks 54903U

Engine Block, Aluminum, 6-Bolt Mains, 4.125 in. Diameter Bore, 1-Piece Rear Main Seal, Chevy, LS, Each

Part Number: EDL-54903U

Not Yet Reviewed

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Dart Big M Sportsman Big Block Chevy Cast Iron Bare Blocks 31223644

Engine, Bare Block, Big M Sportsman, Stock/OEM, 4.60 in. Bore, Cast Iron, 4-Bolt Main, 2-Piece Rear Main Seal, Chevy, Big Block, Each

Part Number: DRT-31223644

Not Yet Reviewed

Estimated Ship Date: Mar 5, 2026 if ordered today

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Estimated Ship Date: Mar 5, 2026 if ordered today

Need It Sooner? We recommend these similar substitute parts:

Summit Racing™ SPC Engine Blocks SUM-150211

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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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 )

Estimated Ship Date: May 5, 2026 if ordered today

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Estimated Ship Date: May 5, 2026 if ordered today

Dart Little M2 Small Block Chevy Cast Iron Bare Blocks 31181235

Bare Blocks, Dart Little M Series, Cast Iron, 9.500 in. Deck Height, 4.125 in. Bore, 4-Bolt Main, 2-Piece Rear Main Seal, Small Block, Chevy, Each

Part Number: DRT-31181235

Not Yet Reviewed

Estimated Ship Date: Mar 11, 2026 if ordered today

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Estimated Ship Date: Mar 11, 2026 if ordered today

Dart Iron Eagle Small Block Chevy Cast Iron Bare Blocks 31121221

Engine Block, Cast Iron, 4-Bolt Mains, 4.125 in. Diameter Bore, 2-Piece Rear Main Seal, Chevy, Small Block, Each

Part Number: DRT-31121221

Not Yet Reviewed

Estimated Ship Date: Mar 6, 2026 if ordered today

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Estimated Ship Date: Mar 6, 2026 if ordered today

World Products Main Caps WPI703355R

Main Cap, Rear, Merlin II, 4-Bolt, 400 Mains, Billet Steel, Chevrolet, Small Block, Each

Part Number: WRL-703355R

Not Yet Reviewed

Estimated Ship Date: Feb 9, 2026 if ordered today

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Estimated Ship Date: Feb 9, 2026 if ordered today

World Products Main Caps WPIWP1703365R

Main Cap, Rear, Merlin III/IV, 4-Bolt, 454 Mains, Ductile Iron, Chevrolet, Big Block, Each

Part Number: WRL-WP1703365R

Not Yet Reviewed

Estimated Ship Date: Feb 9, 2026 if ordered today

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Estimated Ship Date: Feb 9, 2026 if ordered today

World Products Main Caps WPIWPI703370R

Main Cap, Rear, Merlin III/IV, 4-Bolt, 454 Mains, Billet Steel, Chevrolet, Big Block, Each

Part Number: WRL-WPI703370R

Not Yet Reviewed

Estimated Ship Date: Feb 9, 2026 if ordered today

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Estimated Ship Date: Feb 9, 2026 if ordered today

Dart Iron Eagle Small Block Chevy Cast Iron Bare Blocks 31121222

Engine Block, Cast Iron, 4-Bolt Mains, 4.125 in. Diameter Bore, 2-Piece Rear Main Seal, Chevy, Small Block, Each

Part Number: DRT-31121222

Not Yet Reviewed

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Dart Race Series Small Block Ford Aluminum Bare Blocks 31344275

Engine Block, Aluminum, 4-Bolt Mains, 4.125 in. Diameter Bore, 1-Piece Rear Main Seal, Ford, Small Block, Each

Part Number: DRT-31344275

Not Yet Reviewed

Estimated Ship Date: Mar 5, 2026 if ordered today

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Estimated Ship Date: Mar 5, 2026 if ordered today

Edelbrock LS Bare Race Blocks 54901U

Engine Block, Aluminum, 6-Bolt Mains, 4.125 in. Diameter Bore, 1-Piece Rear Main Seal, Chevy, LS, Tall, Each

Part Number: EDL-54901U

Not Yet Reviewed

Estimated Ship Date: Feb 9, 2026 if ordered today

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Estimated Ship Date: Feb 9, 2026 if ordered today

Dart Little M2 Small Block Chevy Cast Iron Bare Blocks 31181111

Bare Blocks, Dart Little M Series, Cast Iron, 9.025 in. Deck Height, 4.000 in. Bore, 4-Bolt Main, 2-Piece Rear Main Seal, Small Block, Chevy, Each

Part Number: DRT-31181111

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

Dart Little M2 Small Block Chevy Cast Iron Bare Blocks 31181211

Bare Blocks, Dart Little M Series, Cast Iron, 9.025 in. Deck Height, 4.125 in. Bore, 4-Bolt Main, 2-Piece Rear Main Seal, Small Block, Chevy, Each

Part Number: DRT-31181211

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

Dart Little M2 Small Block Chevy Cast Iron Bare Blocks 31182211

Bare Blocks, Dart Little M Series, Cast Iron, 9.025 in. Deck Height, 4.125 in. Bore, 4-Bolt Main, 2-Piece Rear Main Seal, Small Block, Chevy, Each

Part Number: DRT-31182211

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

World Products Motown Race Engine Blocks 084135RC

Engine Block, Cast Iron, 400 Mains, Billet Main Caps, 4.120 in. Bore, Raised Cam, 2-Piece Rear Main Seal, Chevy, Small Block, Each

Part Number: WRL-084135RC

Not Yet Reviewed

Estimated Ship Date: Feb 4, 2026 if ordered today

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Estimated Ship Date: Feb 4, 2026 if ordered today

Dart Little M2 Small Block Chevy Cast Iron Bare Blocks 31182225

Bare Blocks, Dart Little M Series, Cast Iron, 9.325 in. Deck Height, 4.125 in. Bore, 4-Bolt Main, 2-Piece Rear Main Seal, Small Block, Chevy, Each

Part Number: DRT-31182225

Not Yet Reviewed

Estimated Ship Date: Mar 5, 2026 if ordered today

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Estimated Ship Date: Mar 5, 2026 if ordered today

Dart Little M2 Small Block Chevy Cast Iron Bare Blocks 31182235

Bare Blocks, Dart Little M Series, Cast Iron, 9.500 in. Deck Height, 4.125 in. Bore, 4-Bolt Main, 2-Piece Rear Main Seal, Small Block, Chevy, Each

Part Number: DRT-31182235

Not Yet Reviewed

Estimated Ship Date: Mar 5, 2026 if ordered today

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Estimated Ship Date: Mar 5, 2026 if ordered today