Engines, Bare Blocks - 4-bolt Main Bolt Style - 2-piece Rear Main Seal Style

Summit Racing™ SPC Small Block Chevy 400 Engine Block 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 ( 3 )

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Summit Racing™ SPC Small Block Chevy 350 Engine Block 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 ( 8 )

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Ford Performance Parts 460 C.I.D. Siamese Bore Engine Blocks M-6010-A460XBB

Engine Blocks, Bare, 460 C.I.D. Siamese Bore, Cast Iron, Standard Deck Height, Ford 385 Series Main Journal Type, Ford, Each

Part Number: FMS-M6010A460XBB

5.0 out of 5 stars ( 1 )

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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 )

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

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

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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

4.86 out of 5 stars ( 7 )

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Summit Racing™ SPC Engine Blocks SUM-150212

Engine Block, Summit, Big Block Chevrolet, Bare, Cast Iron, 4-bolt Main Bolt Style,10.200 in.Tall Deck, 4.500 in. Bore, Each

Part Number: SUM-150212

Not Yet Reviewed

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BluePrint Engines GM Small Block Compatible Bare Engine Blocks BPP12110343

Engine Block SBC, 2PC, SIAM, 9.025 x 4.125, 350MAIN, CAST MC

Part Number: MLL-BPP12110343

Not Yet Reviewed

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BluePrint Engines GM Small Block Compatible Bare Engine Blocks BPP12110344

Engine Block SBC, 2PC, SIAM, 9.025 x 4.000, 350MAIN, CAST MC

Part Number: MLL-BPP12110344

Not Yet Reviewed

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BluePrint Engines GM Small Block Compatible Bare Engine Blocks BPP12110346

Engine Block SBC, 2PC, SIAM, 9.025 x 4.125, 350MAIN, BILLET MC, SC

Part Number: MLL-BPP12110346

Not Yet Reviewed

Estimated Ship Date: Dec 21, 2026 if ordered today

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Estimated Ship Date: Dec 21, 2026 if ordered today

Summit Racing™ SPC Big Block Chevy Engine Block SUM-150213

Engine Block, Summit, Big Block Chevrolet, Bare, Cast Iron, 4-bolt Main Bolt Style, 10.200 in. Tall Deck, 4.600 in. Bore, Each

Part Number: SUM-150213

Not Yet Reviewed

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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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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

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BluePrint Engines GM Small Block Compatible Bare Engine Blocks BPP12110345

Engine Block SBC, 2PC, SIAM, 9.025 x 4.125, 400MAIN, CAST MC

Part Number: MLL-BPP12110345

Not Yet Reviewed

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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

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Chevrolet Performance Bowtie Big Block Chevy Cast Iron Engine Blocks 19212191

Engine Block, Bowtie, Cast Iron, 4.494 in. Bore, 9.800 in. Deck, Chevy, Big Block Gen V, Each

Part Number: NAL-19212191

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Feb 18, 2027 if ordered today

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Estimated Ship Date: Feb 18, 2027 if ordered today

Need It Sooner? We recommend these similar substitute parts:

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

4.75 out of 5 stars ( 9 )

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Chevrolet Performance Bowtie Sportsman Race Blocks 19212196

Engine Block, Cast Iron, 4-Bolt Mains, 4.240 in. Diameter Bore, 2-Piece Rear Seal, Chevy, Big Block Mark IV

Part Number: NAL-19212196

Not Yet Reviewed

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Chevrolet Performance Bowtie Big Block Chevy Cast Iron Engine Blocks 19212194

Engine Block, Bare, Cast Iron, 4-Bolt Mains, 4.494 in. Diameter Bore, 2-Piece Rear Main Seal, 10.200 in. Tall Deck, Chevy, Big Block, Each

Part Number: NAL-19212194

5.0 out of 5 stars ( 1 )

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BluePrint Engines GM Small Block Compatible Bare Engine Blocks BPP12110348

Engine Block SBC, 2PC, SIAM, 9.025 x 4.125, 400MAIN, BILLET MC, SC

Part Number: MLL-BPP12110348

Not Yet Reviewed

Estimated Ship Date: Dec 18, 2026 if ordered today

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Estimated Ship Date: Dec 18, 2026 if ordered today

BluePrint Engines Small Block Ford Compatible 351 Cleveland Bare Engine Blocks BPP12110338

Engine Block SBF 351, SIAM, CLEV, 9.500 x 4.000, CAST MC

Part Number: MLL-BPP12110338

Not Yet Reviewed

Estimated Ship Date: Dec 21, 2026 if ordered today

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Estimated Ship Date: Dec 21, 2026 if ordered today

BluePrint Engines Small Block Ford Compatible 351 Cleveland Bare Engine Blocks BPP12110337

Engine Block SBF 351, SIAM, CLEV, 9.500 x 4.125, CAST MC

Part Number: MLL-BPP12110337

Not Yet Reviewed

Estimated Ship Date: Dec 21, 2026 if ordered today

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Estimated Ship Date: Dec 21, 2026 if ordered today

BluePrint Engines GM Small Block Compatible Bare Engine Blocks BPP12110347

Engine Block SBC, 2PC, SIAM, 9.025 x 4.000, 350MAIN, BILLET MC

Part Number: MLL-BPP12110347

Not Yet Reviewed

Estimated Ship Date: Dec 18, 2026 if ordered today

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Estimated Ship Date: Dec 18, 2026 if ordered today

BluePrint Engines Small Block Ford Compatible 351 Cleveland Bare Engine Blocks BPP12110336

Engine Block SBF 351, SIAM, CLEV, 9.500 x 4.000, BILLET MC

Part Number: MLL-BPP12110336

Not Yet Reviewed

Estimated Ship Date: Dec 21, 2026 if ordered today

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Estimated Ship Date: Dec 21, 2026 if ordered today