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Engine Block, Pro LS, Bare, Cast Iron, 6-bolt Main Bolt Style, 6 Head bolt Pattern, 9.240 in. Std. Deck 4.125 in. Bore, GenIII/IV LS Chevrolet, Each
Part Number: SUM-150216
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
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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
Estimated Ship Date: Today
Estimated Ship Date: Today
Bare Block, Cast Iron, LS Mains, 4.125 in. Bore, 9.24 in. Deck Height, Each
Part Number: DRT-31867212
Estimated Ship Date: Today
Estimated Ship Date: Today
Engine Block, Cast Iron , 4-Bolt Mains, 4.125 in. Bore, 1-Piece Rear Main Seal, Ford 351, Small Block, Each
Part Number: DRT-31375235
Estimated Ship Date: Today
Estimated Ship Date: Today
Engine Block, Cast Iron, 400 Mains, 4.115 in. Bore, 2-Piece Rear Main Seal, Chevy, Small Block, Each
Part Number: DRT-31162211
Estimated Ship Date: Today
Estimated Ship Date: Today
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
Estimated Ship Date: Today
Estimated Ship Date: Today
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
Estimated Ship Date: Today
Estimated Ship Date: Today
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
Estimated Ship Date: Today
Estimated Ship Date: Today
Engine Block, Summit, Big Block Chevrolet, Bare, Cast Iron, 4-bolt Main Bolt Style, 9.800 in. Standard Deck, 4.500 in. Bore, Each
Part Number: SUM-150210
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Estimated Ship Date: Today
Estimated Ship Date: Today
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
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Estimated Ship Date: Today
Estimated Ship Date: Today
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
Estimated Ship Date: Today
Estimated Ship Date: Today
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
Estimated Ship Date: Today
Estimated Ship Date: Today
Engine Block, Cast Iron, 4-Bolt Mains, 4.250 in. Diameter Bore, 1-Piece Rear Main Seal, Chevy, Big Block, Each
Part Number: NAL-19170538
Estimated Ship Date: Today
Estimated Ship Date: Today
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
Estimated Ship Date: Today
Estimated Ship Date: Today
Engine Block, Summit, Big Block Chevrolet, Bare, Cast Iron, 4-bolt Main Bolt Style, 9.800 in. Standard Deck, 4.600 in. Bore, Each
Part Number: SUM-150211
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Engine Block, Pro LS, Bare, Cast Iron, 6-bolt Main Bolt Style, 9.240 in. Std Deck, 4 Head Bolt, 4.065 in. Bore, GenIII/IV LS Chevrolet, 6.0/6.2, Each
Part Number: SUM-150215
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Engine Block, Cast Iron, Nodular Iron Splayed 4-Bolt Mains, 4.495 in. Bore, 2-Piece Seal, 9.800 in. Deck, Chevy, Big Block, Each
Part Number: WRL-091101
Not Yet Reviewed
Estimated Ship Date: Jan 8, 2026 if ordered today
Estimated Ship Date: Jan 8, 2026 if ordered today
Need It Sooner? We recommend these similar substitute parts:
Engine Block, Cast Iron, 4-Bolt Mains, 4.245 in. Diameter Bore, 9.800 in. Deck, Nodular Iron Main Caps, 1-Piece Rear Main Seal, Chevy, Big Block, Each
Part Number: WRL-091103
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Engine Block, Cast Iron, 4-Bolt Mains, 4.245 in. Diameter Bore, 2-Piece Rear Main Seal, Chevy, Big Block, Each
Part Number: WRL-095000
Estimated Ship Date: Jan 7, 2026 if ordered today
Estimated Ship Date: Jan 7, 2026 if ordered today
Need It Sooner? We recommend these similar substitute parts:
Engine Block, Cast Iron, Nodular Iron Splayed 4-Bolt Mains, 4.495 in. Bore, 2-Piece Seal, 10.200 in. Deck, Chevy, Big Block, Each
Part Number: WRL-091111
Not Yet Reviewed
Estimated Ship Date: Jan 9, 2026 if ordered today
Estimated Ship Date: Jan 9, 2026 if ordered today
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: Today
Estimated Ship Date: Today
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: Today
Estimated Ship Date: Today
Engines, Bare Block, Cast Iron, Merlin IV BBC, 10.200 in. Deck, 4.595 in. Bore, Splayed Billet Caps, Standard Cam Bearings and Lifters, Each
Part Number: WRL-095112
Estimated Ship Date: Jan 7, 2026 if ordered today
Estimated Ship Date: Jan 7, 2026 if ordered today
Engines, Bare Block, Cast Iron, Merlin IV BBC, 9.800 in. Deck, 4.595 in. Bore, Splayed Billet Caps, Standard Cam Bearings and Lifter bores, Each
Part Number: WRL-095012
Not Yet Reviewed
Estimated Ship Date: Jan 9, 2026 if ordered today
Estimated Ship Date: Jan 9, 2026 if ordered today
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
Estimated Ship Date: Jan 8, 2026 if ordered today
Estimated Ship Date: Jan 8, 2026 if ordered today
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