Bare Engine Blocks

Whether you’re building a new engine or recovering from an under-the-hood incident you’d rather soon forget, explore our large selection of aftermarket bare...

Whether you’re building a new engine or recovering from an under-the-hood incident you’d rather soon forget, explore our large selection of aftermarket bare engine blocks to complete your new power plant project. We have V6, V8, and L4 engine block types, and bare blocks of various materials including aluminum, billet aluminum, steel, cast iron, and ductile iron. Find the perfect foundation for your Chevy, Ford, or Mopar build-up, including Chevy 350 and 454, Ford 302 and 351w, Hemi, Corvette, LS, and LSX engines. Explore Summit Racing’s vast selection today!

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Results 1 - 25 of 398

Dart SHP Special High Performance Small Block Chevy Cast Iron Bare Blocks 31162211

Dart SHP Special High Performance Small Block Chevy Cast Iron Bare Blocks 31162211

Engine Block, Cast Iron, 400 Mains, 4.115 in. Bore, 2-Piece Rear Main Seal, Chevy, Small Block, Each

Part Number: DRT-31162211

4.25 out of 5 stars ( 4 )

Estimated Ship Date: Tuesday 5/27/2025

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Estimated Ship Date: Tuesday 5/27/2025

Summit Racing™ SPC Engine Blocks SUM-150201

Engine Block, 400 Chevy Small Block, Class 35 German Cast Iron, 4-Bolt 400 Mains, 4.125 in. Unfinished Bore Diameter, 2-Piece Rear Main Seal

Part Number: SUM-150201

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Tuesday 5/27/2025

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Estimated Ship Date: Tuesday 5/27/2025

Summit Racing™ SPC Engine Blocks SUM-150202

Engine Block, 400 Chevy Small Block, Class 35 German Cast Iron, 4-Bolt 350 Mains, 4.125 in. Unfinished Bore Diameter, 2-Piece Rear Main Seal

Part Number: SUM-150202

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Tuesday 5/27/2025

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Estimated Ship Date: Tuesday 5/27/2025

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

Estimated Ship Date: Tuesday 5/27/2025

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Estimated Ship Date: Tuesday 5/27/2025

Summit Racing™ SPC Engine Blocks SUM-150216

Engine Block, Pro LS, Bare, Cast Iron, 6-bolt Main Bolt Style, 9.240 in. Standard Deck, Chevrolet, Each

Part Number: SUM-150216

Not Yet Reviewed

Estimated Ship Date: Tuesday 5/27/2025

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Estimated Ship Date: Tuesday 5/27/2025

Callies Mopar Drag Pak Engine Blocks P5160272AA

Engine Block, Aluminum, Billet Steel Main Caps, 4.125 Bore, 9.25 in. Deck Height, Drag Pak, Mopar, Each

Part Number: CPI-P5160272AA

Not Yet Reviewed

Estimated Ship Date: Tuesday 5/27/2025

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Estimated Ship Date: Tuesday 5/27/2025

Summit Racing™ 5.7L Hemi Gen III Engine Blocks SUM-150160

Engine Block, Cast Iron, 2-Bolt Mains, 3.927 in. Bore, Clearanced, 1-Piece Rear Seal, Dodge, RAM, Hemi, Gen III, Each

Part Number: SUM-150160

4.25 out of 5 stars ( 4 )

Estimated Ship Date: Tuesday 5/27/2025

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Estimated Ship Date: Tuesday 5/27/2025

Ford Performance Parts 7.3L Godzilla Engine Blocks for 2020-2022 F-250 SUPER DUTY - M-6010-SD73

Engine Blocks, Bare, 7.3L Godzilla, OEM Engine Block Style, Cast Iron, 4.220 in. Cylinder Bore Diameter, Ford 7X V8 Main Journal Type, Ford, Each

Part Number: FMS-M-6010-SD73

4.5 out of 5 stars ( 2 )

Estimated Ship Date: Tuesday 5/27/2025

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Estimated Ship Date: Tuesday 5/27/2025

Callies Mopar Engine Blocks P5160212AA

Bare Blocks, Cast Iron, OEM Style, Standard 10.725 in. Deck, 4.310 in Pre Finished Bore, Main Caps, Main Bearings, Mopar, Each

Part Number: CPI-P5160212AA

Not Yet Reviewed

Estimated Ship Date: Tuesday 5/27/2025

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Estimated Ship Date: Tuesday 5/27/2025

Ford Performance Parts 460 C.I.D. Siamese Bore Engine Blocks M-6010-A460X

Engine Block, Cast Iron, 4-Bolt Mains, 4.360 in. Diameter Bore, 2-Piece Rear Main Seal, Siamese Bore, Ford, Big Block, Each

Part Number: FMS-M-6010-A460X

Not Yet Reviewed

Estimated Ship Date: Tuesday 5/27/2025

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Estimated Ship Date: Tuesday 5/27/2025

Dart SHP Special High Performance Small Block Chevy Cast Iron Bare Blocks 31161111L

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

Part Number: DRT-31161111L

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Jul 21, 2025 if ordered today

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Estimated Ship Date: Jul 21, 2025 if ordered today

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Summit Racing™ SPC Engine Blocks SUM-150203

5 out of 5 stars ( 1 )

Estimated Ship Date: Tuesday 5/27/2025

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Ford Performance Parts 351 Aluminum Windsor Engine Blocks M-6010-Z351

Engine Block, Aluminum, 4-Bolt Cleveland Mains, 4.115 in. Dia. Bore, 1-Piece Rear Main Seal, Ford, 5.8L, Each

Part Number: FMS-M-6010-Z351

4.5 out of 5 stars ( 2 )

Estimated Ship Date: Jun 10, 2025 if ordered today

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Estimated Ship Date: Jun 10, 2025 if ordered today

Dart Iron Eagle Mopar Gen III Cast Iron Bare Blocks 31622311

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

Part Number: DRT-31622311

Not Yet Reviewed

Estimated Ship Date: Tuesday 5/27/2025

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Estimated Ship Date: Tuesday 5/27/2025

World Products Merlin IV Engine Blocks 091117

Engine Block, Cast Iron, 4-Bolt Mains, 4.595 in. Diameter Bore, 10.250 in. Deck, Nodular Iron Main Cap, 2-Piece Rear Main Seal, Chevy, Big Block, Each

Part Number: WRL-091117

Not Yet Reviewed

Estimated Ship Date: May 28, 2025 if ordered today

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Estimated Ship Date: May 28, 2025 if ordered today

Dart Big M2 Big Block Chevy Cast Iron Bare Blocks 31223554

Bare Blocks, Dart Big M Sportsman Series, Cast Iron,10.200 in. Deck Height, 4.560 in,Bore,4-Bolt Main,2-Piece Rear Main Seal, Big Block, Chevy, Each

Part Number: DRT-31223554

Not Yet Reviewed

Estimated Ship Date: Jul 8, 2025 if ordered today

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Estimated Ship Date: Jul 8, 2025 if ordered today

Ford Performance Parts 7.3L Gas Engine Race Blocks M-6010-SD73R

Engine Blocks, Bare, 7.3L Godzilla, OEM Engine Block Style, Cast Iron, 4.220 in. Cylinder Bore Diameter, Ford 7X V8 Main Journal Type, Ford, Each

Part Number: FMS-M-6010-SD73R

Not Yet Reviewed

Estimated Ship Date: Jun 20, 2025 if ordered today

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Estimated Ship Date: Jun 20, 2025 if ordered today

Chevrolet Performance 454 C.I.D. Bare Engine Blocks 19170538

Engine Block, Cast Iron, 4-Bolt Mains, 4.250 in. Diameter Bore, 1-Piece Rear Main Seal, Chevy, Big Block, Each

Part Number: NAL-19170538

4.89 out of 5 stars ( 9 )

Estimated Ship Date: Tuesday 5/27/2025

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Estimated Ship Date: Tuesday 5/27/2025

Ford Performance Parts Boss 302 Engine Blocks 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: Tuesday 5/27/2025

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Estimated Ship Date: Tuesday 5/27/2025

Summit Racing™ SPC Engine Blocks SUM-150204

Engine Block, 400 Chevy Small Block, Class 35 German Cast Iron, 4-Bolt 350 Mains, 4.125 in. Unfinished Bore Diameter, 1-Piece Rear Main Seal

Part Number: SUM-150204

Not Yet Reviewed

Estimated Ship Date: Tuesday 5/27/2025

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Estimated Ship Date: Tuesday 5/27/2025

Chevrolet Performance LSX Bowtie Engine Blocks 19417352

Engine Block, LSX Bowtie, Bare, Cast Iron, 6-bolt Main Bolt Style, 9.240 in. Standard Deck, Chevrolet, Each

Part Number: NAL-19417352

Not Yet Reviewed

Estimated Ship Date: Tuesday 5/27/2025

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Estimated Ship Date: Tuesday 5/27/2025

RHS 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: RHS-54903U

Not Yet Reviewed

Estimated Ship Date: Jul 28, 2025 if ordered today

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Estimated Ship Date: Jul 28, 2025 if ordered today

Callies Mopar Engine Blocks P5160208AA

Bare Blocks, Cast Iron, OEM Style, Standard 10.725 in. Deck, 4.495 in Pre Finished Bore, Main Caps, Main Bearings, Mopar, Each

Part Number: CPI-P5160208AA

Not Yet Reviewed

Estimated Ship Date: Aug 4, 2025 if ordered today

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Estimated Ship Date: Aug 4, 2025 if ordered today

Callies Mopar Engine Blocks P5160210AA

Bare Blocks, Mopar Gen II Hemi Engine Block, Cast Iron, Aftermarket, Standard Deck, 4.245 in. Cylinder Bore, Chrysler, Dodge, Plymouth, 426 Hemi, Each

Part Number: CPI-P5160210AA

Not Yet Reviewed

Estimated Ship Date: Aug 20, 2025 if ordered today