Engines, Bare Blocks - 4.000 in. Cylinder Bore Diameter - V8 Engine Type - Free Shipping on Orders Over $109 at Summit Racing

Dart SHP Special High Performance Small Block Ford Cast Iron Bare Blocks 31374175

Engine Block, Cast Iron , 4-Bolt Mains, 4.000 in. Bore, 1-Piece Rear Main Seal, Ford 302, Small Block, Each

Part Number: DRT-31374175

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Tomorrow

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Summit Racing™ SPC Engine Blocks SUM-150200

Engine Block, 350 Chevy Small Block, Class 35 German Cast Iron, 4-Bolt 350 Mains, 4.000 in. Unfinished Bore Diameter, 2-Piece Rear Main Seal

Part Number: SUM-150200

5.0 out of 5 stars ( 5 )

Estimated Ship Date: Tomorrow

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

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

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

Part Number: DRT-31161111

4.83 out of 5 stars ( 6 )

Estimated Ship Date: Tomorrow

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Summit Racing™ SPC Engine Blocks SUM-150203

Engine Block, 350 Chevy Small Block, Class 35 German Cast Iron, 4-Bolt 350 Mains, 4.000 in. Unfinished Bore Diameter, 1-Piece Rear Main Seal

Part Number: SUM-150203

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

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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: Tomorrow

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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: May 28, 2025 if ordered today

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Estimated Ship Date: May 28, 2025 if ordered today

ATK High Performance GM 350 Vortec Bare Blocks 13ZB

Engine Block, Vortec Roller, Cast Iron, 4-Bolt 350 Mains, 4 in. Diameter Bore, 1-Piece Rear Main Seal, Chevy Small Block, Each

Part Number: HPE-13ZB

Not Yet Reviewed

Estimated Ship Date: Jun 30, 2025 if ordered today

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Estimated Ship Date: Jun 30, 2025 if ordered today

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: Jun 12, 2025 if ordered today

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Estimated Ship Date: Jun 12, 2025 if ordered today

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Summit Racing™ SPC Engine Blocks SUM-150203

5 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

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Dart SHP Special High Performance Small Block Ford Cast Iron Bare Blocks 31375135

Engine Block, Cast Iron , 4-Bolt Mains, 4.000 in. Bore, 1-Piece Rear Main Seal, Ford 351, Small Block, Each

Part Number: DRT-31375135

Not Yet Reviewed

Estimated Ship Date: May 12, 2025 if ordered today

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Estimated Ship Date: May 12, 2025 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: Jun 17, 2025 if ordered today

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Estimated Ship Date: Jun 17, 2025 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

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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Summit Racing™ SPC Engine Blocks SUM-150206

Engine Block, Ford 302 Cast Iron , 4-Bolt Mains, 4.000 in. Bore, 1-Piece Rear Main Seal, Small Block, Each

Part Number: SUM-150206

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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World Products SBC Motown Blocks 084010

Engine Block, Cast Iron, 4-Bolt Mains, 4.000 in. Diameter Bore, 2-Piece Rear Main Seal, Chevy, Small Block, Each

Part Number: WRL-084010

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

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: May 28, 2025 if ordered today

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Estimated Ship Date: May 28, 2025 if ordered today

World Products Motown LS Iron Blocks 084180-904

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

Part Number: WRL-084180-904

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

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: May 28, 2025 if ordered today

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Estimated Ship Date: May 28, 2025 if ordered today

World Products Man O'War Bare Blocks 087072

Engines, Bare Blocks, Man O'War Bare Block, 351 Cleveland Mains, 9.500 in. Deck Height, 4-bolt Main Style, Ford, 5.0L, 5.8L, Small Block Windsor, Each

Part Number: WRL-087072

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 LS Next Cast Iron Bare Blocks 31837111

Engine Block, LS Next, Bare Block, 4 in Bore, 9.240 Deck, 4-Bolt Mains, 1 Piece Seal, 0.375 in Extended Cylinder Barrels, Iron, GM LS-Series, Each

Part Number: DRT-31837111

Not Yet Reviewed

Estimated Ship Date: Jun 18, 2025 if ordered today

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Estimated Ship Date: Jun 18, 2025 if ordered today

Dart SHP Special High Performance LS Next Pro Cast Iron Bare Blocks 31867112

Bare Block, Cast Iron, LS Mains, 4.00 in. Bore, 9.24 in. Deck Height, Each

Part Number: DRT-31867112

Not Yet Reviewed

Estimated Ship Date: Jun 18, 2025 if ordered today

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Estimated Ship Date: Jun 18, 2025 if ordered today

Dart LS Next Aluminum Bare Blocks 31937142

Bare Blocks, Dart LS Next Series, Aluminum, 9.750 Deck Height, 4 in Bore, Steel Main, 4-Bolt Mains, 1-Piece Rear Main Seal, LS Gen III/IV, Chevy

Part Number: DRT-31937142

Not Yet Reviewed

Estimated Ship Date: Jun 18, 2025 if ordered today

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Estimated Ship Date: Jun 18, 2025 if ordered today

Dart LS Next Aluminum Bare Blocks 31947112

Bare Blocks, Dart LS Next Series, Aluminum, 9.240 in Deck Height, 4 in Bore, Steel Main, 4-Bolt Mains, 1-Piece Rear Main Seal, LS Gen III/IV, Chevy

Part Number: DRT-31947112

Not Yet Reviewed

Estimated Ship Date: Jun 18, 2025 if ordered today

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Estimated Ship Date: Jun 18, 2025 if ordered today

Dart Race Series Small Block Chevy Aluminum Bare Blocks 31711112

Bare Blocks, Dart Race Series, Aluminum, 9.025 in Deck, 4.125 in. Bore, 4-Bolt Mains,2-Piece Rear Main Seals,BBC Cam Tunnel,® Small Block,Chevy, Each

Part Number: DRT-31711112

Not Yet Reviewed

Estimated Ship Date: Jun 11, 2025 if ordered today

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Estimated Ship Date: Jun 11, 2025 if ordered today

Dart Race Series Small Block Chevy Aluminum Bare Blocks 31711113

Bare Blocks, Dart Race Series, Aluminum, 9.025 in Deck, 4.0 in. Bore, 4-Bolt Mains, 2-Piece Rear Main Seals,Small Block, Chevy, Each

Part Number: DRT-31711113

Not Yet Reviewed

Estimated Ship Date: Jun 11, 2025 if ordered today

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Estimated Ship Date: Jun 11, 2025 if ordered today

Dart Race Series Small Block Chevy Aluminum Bare Blocks 31711122

Bare Blocks, Dart Race Series, Aluminum, 9.325 in Deck, 4.00 in. Bore, 4-Bolt Mains,2-Piece Rear Main Seals,BBC Cam Tunnel,® Small Block,Chevy, Each

Part Number: DRT-31711122

Not Yet Reviewed

Estimated Ship Date: Jun 11, 2025 if ordered today

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Estimated Ship Date: Jun 11, 2025 if ordered today

Dart Race Series Small Block Chevy Aluminum Bare Blocks 31711132

Bare Blocks, Dart Race Series, Aluminum, 9.500 in Deck, 4.00 in. Bore, 4-Bolt Mains,2-Piece Rear Main Seals,BBC Cam Tunnel,® Small Block,Chevy, Each

Part Number: DRT-31711132

Not Yet Reviewed

Estimated Ship Date: Jun 11, 2025 if ordered today

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Estimated Ship Date: Jun 11, 2025 if ordered today