Engines, Bare Blocks

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 ( 3 )

Estimated Ship Date: Monday 10/19/2026 if shipped by air

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Engine Block, Ford 302 Cast Iron , 4-Bolt Mains, 8.200 in. Deck, 4.000 in. Bore, 1-Piece Rear Main Seal, Small Block, Each

Part Number: SUM-150206

Not Yet Reviewed

Estimated Ship Date: Monday 10/19/2026 if shipped by air

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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 ( 2 )

Estimated Ship Date: Monday 10/19/2026 if shipped by air

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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: Monday 10/19/2026 if shipped by air

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

Part Number: DRT-31161111

4.86 out of 5 stars ( 7 )

Estimated Ship Date: Monday 10/19/2026 if shipped by air

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Engine Block, Bare, Cast Iron, SHP , 4.125 in. Bore, 4-Bolt Main Style, 2-Piece Rear Main Seal, Nodular Main Caps, Small Block, Chevy, Each

Part Number: DRT-31162211-B

Not Yet Reviewed

Estimated Ship Date: Monday 10/19/2026 if shipped by air

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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: Monday 10/19/2026 if shipped by air

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Engine Block, Ford 302 Cast Iron , 4-Bolt Mains, 8.200 in. Deck, 4.125 in. Bore, 1-Piece Rear Main Seal, Small Block, Each

Part Number: SUM-150207

Not Yet Reviewed

Estimated Ship Date: Monday 10/19/2026 if shipped by air

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Engine Block SBF 302, SIAM, 8.200 x 4.000, CAST MC

Part Number: MLL-BPP12110342

Not Yet Reviewed

Estimated Ship Date: Dec 14, 2026 if ordered today

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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: Monday 10/19/2026 if shipped by air

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Engine Block, Ford 351W Cast Iron , 4-Bolt Mains, 9.500 deck, 4.125 in. Bore, 1-Piece Rear Main Seal, Small Block, Each

Part Number: SUM-150205

Not Yet Reviewed

Estimated Ship Date: Monday 10/19/2026 if shipped by air

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Engine Block, Aluminum, 6-Bolt Mains, 4.120 in. Diameter Bore, Standard Deck, Raised Camshaft Location, 1-Piece Rear Main Seal, Chevy, LS, Each

Part Number: EDL-54903U-904

Not Yet Reviewed

Estimated Ship Date: Monday 10/19/2026 if shipped by air

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Engine Block SBF 302, SIAM, 8.200 x 4.125, BILLET MC

Part Number: MLL-BPP12110339

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Estimated Ship Date: Monday 10/19/2026 if shipped by air

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Engine Block SBF 302, SIAM, 8.200 x 4.000, BILLET MC

Part Number: MLL-BPP12110340

Not Yet Reviewed

Estimated Ship Date: Monday 10/19/2026 if shipped by air

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Engine Block SBF 302, SIAM, 8.200 x 4.125, CAST MC

Part Number: MLL-BPP12110341

Not Yet Reviewed

Estimated Ship Date: Dec 14, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order