Engines, Bare Blocks Engines & Components - 4.165 Maximum Bore Diameter (in.) - Free Shipping on Orders Over $109 at Summit Racing

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: Today

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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 )

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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 )

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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 )

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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 )

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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 )

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Dart SHP Special High Performance Small Block Chevy Cast Iron Bare Blocks 31161211

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

Part Number: DRT-31161211

4.75 out of 5 stars ( 8 )

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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 14, 2025 if ordered today

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Estimated Ship Date: Jul 14, 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: Jul 7, 2025 if ordered today

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Estimated Ship Date: Jul 7, 2025 if ordered today

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Summit Racing™ SPC Engine Blocks SUM-150203

5 out of 5 stars ( 1 )

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Dart LS Next Cast Iron Bare Blocks 31867211

Engine Block, SHP LS Next, Bare Block, 4.125 in Bore, 9.240 Deck, 4-Bolt Mains, Cast Iron, GM LS-Series, Each

Part Number: DRT-31867211

Not Yet Reviewed

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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

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Callies Mopar Engine Blocks 05045475AG-ASSY

Engines, Bare Blocks, Gen III Hemi, Cast Iron, OEM Style, Standard Deck, 4.10 in. Bore, with Studs, Line Honed Main Caps, Dodge, RAM, 6.4L, Each

Part Number: CPI-S0034

Not Yet Reviewed

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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

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RHS 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: RHS-54901U

Not Yet Reviewed

Estimated Ship Date: Jul 14, 2025 if ordered today

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Estimated Ship Date: Jul 14, 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 LS Next Cast Iron Bare Blocks 31837211

Engine Block, LS Next, Cast Iron, 4.125 in. Diameter Bore, 4-Bolt Mains, Chevy, LS, Each

Part Number: DRT-31837211

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 Cast Iron Bare Blocks 31837221

Engine Block, LS Next, Cast Iron, 4.125 in. Diameter Bore, 4-Bolt Mains, Chevy, LS, Each

Part Number: DRT-31837221

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 Cast Iron Bare Blocks 31867111

Engine Block, Cast Iron, LS 4-bolt Mains, 4.000 in. Bore, Chevy LS, Small Block, Each

Part Number: DRT-31867111

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 31937111

Engine Block, LS Next, Aluminum, 4.000 in. Diameter Bore, 4-Bolt Mains, Chevy, LS, Each

Part Number: DRT-31937111

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 31937112

Engine Block, LS Next, Aluminum, 4.000 in. Diameter Bore, 4-Bolt Mains, Raised Cam, Chevy, LS, Each

Part Number: DRT-31937112

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 31937211

Engine Block, LS Next, Aluminum, 4.125 in. Diameter Bore, 4-Bolt Mains, Chevy, LS, Each

Part Number: DRT-31937211

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 31937212

Engine Block, LS Next, Aluminum, 4.125 in. Diameter Bore, 4-Bolt Mains, Raised Cam, Chevy, LS, Each

Part Number: DRT-31937212

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 31937221

Engine Block, LS Next, Aluminum, 4.125 in. Diameter Bore, 4-Bolt Mains, Chevy, LS, Each

Part Number: DRT-31937221

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 31937222

Engine Block, LS Next, Aluminum, 4.125 in. Diameter Bore, 4-Bolt Mains, Raised Cam, Chevy, LS, Each

Part Number: DRT-31937222

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