Engines, Bare Blocks - 4.125 in. Cylinder Bore Diameter - Free Shipping on Orders Over $109 at Summit Racing

World Products SBC Motown Blocks 084130RC-904

World Products SBC Motown Blocks 084130RC-904

Engines, Bare Blocks, SBC Motown Block, 400 Mains, 9.025 in. Deck Height, 4-bolt Main Bolt Style, Chevrolet, V8, Chevy Small Block Gen I, Each

Part Number: WRL-084130RC-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 302 C.I.D. Ford Man O'War Blocks 087010

Engine Block, Ford Man O'War, 302 c.i.d., Cast Iron, 302 Mains, 8.2 in. Deck Height, 1-piece Rear Main Style

Part Number: WRL-087010

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 302 C.I.D. Ford Man O'War Blocks 087020

Engine Block, Ford Man O'War, 302 c.i.d., Cast Iron, 302 Mains, 8.2 in. Deck Height, 1-piece Rear Main Style

Part Number: WRL-087020

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 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: May 28, 2025 if ordered today

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Estimated Ship Date: May 28, 2025 if ordered today

World Products Motown Race Engine Blocks 084130

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

Part Number: WRL-084130

4.0 out of 5 stars ( 1 )

Estimated Ship Date: May 28, 2025 if ordered today

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Estimated Ship Date: May 28, 2025 if ordered today

Brodix Cylinder Heads Aluminum Small Block Chevy Engine Blocks 8B1000A

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

Part Number: BRO-8B1000A

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow if ordered today

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Estimated Ship Date: Tomorrow if ordered today

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Dart Little M2 Small Block Chevy Cast Iron Bare Blocks 31181225

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-31181225

Not Yet Reviewed

Estimated Ship Date: Apr 29, 2025 if ordered today

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Estimated Ship Date: Apr 29, 2025 if ordered today

Dart Little M2 Small Block Chevy Cast Iron Bare Blocks 31192211

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-31192211

Not Yet Reviewed

Estimated Ship Date: Tomorrow if ordered today

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Estimated Ship Date: Tomorrow if ordered today

Dart Little M2 Small Block Chevy Cast Iron Bare Blocks 31181215

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-31181215

Not Yet Reviewed

Estimated Ship Date: May 9, 2025 if ordered today

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Estimated Ship Date: May 9, 2025 if ordered today

Ford Performance Parts 351 Aluminum Windsor Engine Blocks M-6010-Z35192

Engines, Bare Blocks, 351 Aluminum Windsor Engine Block, 351 Windsor Mains, 9.200 in. Deck Height, 4-bolt Main, Ford, V8, Small Block Windsor, Each

Part Number: FMS-M6010Z35192

Not Yet Reviewed

Estimated Ship Date: May 1, 2025 if ordered today

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Estimated Ship Date: May 1, 2025 if ordered today

World Products SBC Motown Blocks 084020

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

Part Number: WRL-084020

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 SBC Motown Blocks 084120RC

Engines, Bare Blocks, SBC Motown Block, 350 Mains, 9.025 in. Deck Height, 4-bolt Main Bolt Style, Chevrolet, V8, Chevy Small Block Gen I, Each

Part Number: WRL-084120RC

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 SBC Motown LS Bare Blocks 084181

Engines, Bare Blocks, SBC Motown LS Bare Block, 350 Mains, 9.240 in. Deck Height, 4-bolt Main Bolt Style, Chevrolet, V8, Chevy Small Block Gen I, Each

Part Number: WRL-084181

5.0 out of 5 stars ( 1 )

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 Race Engine Blocks 084125RC

Engine Block, Cast Iron, 350 Mains, Billet Main Caps, 4.120 in. Bore, Raised Cam, 2-Piece Rear Main Seal, Chevy, Small Block, Each

Part Number: WRL-084125RC

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 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: May 28, 2025 if ordered today

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Estimated Ship Date: May 28, 2025 if ordered today

World Products Motown Race Engine Blocks 084135RC-904

Engine Block, Cast Iron, 400 Mains, 0.904 in. Lifter, Billet Main Caps, 4.120 in. Bore, Raised Cam, 2-Piece Rear Main Seal, Chevy, Small Block, Each

Part Number: WRL-084135RC-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 087162

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

Part Number: WRL-087162

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 SHP Pro Special High Performance Small Block Chevy Cast Iron Bare Blocks 31161212

Engine Block, Cast Iron, 4-bolt Mains, 4.125 in. Diameter Bore, 2-piece Rear Main Seal, Chevy, Small Block

Part Number: DRT-31161212

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Jun 11, 2025 if ordered today

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Estimated Ship Date: Jun 11, 2025 if ordered today

Dart Iron Eagle Small Block Chevy Cast Iron Bare Blocks 31121211

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

Part Number: DRT-31121211

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 Iron Eagle Small Block Chevy Cast Iron Bare Blocks 31121212

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

Part Number: DRT-31121212

Not Yet Reviewed

Estimated Ship Date: Apr 8, 2026 if ordered today

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Estimated Ship Date: Apr 8, 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: Jun 11, 2025 if ordered today

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Estimated Ship Date: Jun 11, 2025 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

Estimated Ship Date: Jul 3, 2025 if ordered today

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Estimated Ship Date: Jul 3, 2025 if ordered today

Dart Iron Eagle Small Block Chevy Cast Iron Bare Blocks 31122212

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

Part Number: DRT-31122212

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 Iron Eagle Small Block Chevy Cast Iron Bare Blocks 31122221

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

Part Number: DRT-31122221

Not Yet Reviewed

Estimated Ship Date: Apr 13, 2026 if ordered today

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Estimated Ship Date: Apr 13, 2026 if ordered today

Dart Iron Eagle Small Block Chevy Cast Iron Bare Blocks 31122222

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

Part Number: DRT-31122222

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