Availability
Engines, Bare Blocks
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
Estimated Ship Date: Monday 10/19/2026 if shipped by air
Estimated Ship Date: Monday 10/19/2026 if shipped by air
BUILD IT WITH SUMMIT!
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: Monday 10/19/2026 if shipped by air
Estimated Ship Date: Monday 10/19/2026 if shipped by air
Engine Block, Bare, Aluminum, 94mm Bore, Finished-Honed Bores, Hi-Flow Oil Squirters Included, Cross-Bolted Mains, Ford, Mustang, 5.2L Gen 3, Each
Part Number: FMS-M-6010-M52B
Estimated Ship Date: Monday 10/19/2026 if shipped by air
Estimated Ship Date: Monday 10/19/2026 if shipped by air
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: Monday 10/19/2026 if shipped by air
Estimated Ship Date: Monday 10/19/2026 if shipped by air
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: Monday 10/19/2026 if shipped by air
Estimated Ship Date: Monday 10/19/2026 if shipped by air
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: Monday 10/19/2026 if shipped by air
Estimated Ship Date: Monday 10/19/2026 if shipped by air
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
Estimated Ship Date: Monday 10/19/2026 if shipped by air
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: Monday 10/19/2026 if shipped by air
Estimated Ship Date: Monday 10/19/2026 if shipped by air
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: Monday 10/19/2026 if shipped by air
Estimated Ship Date: Monday 10/19/2026 if shipped by air
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: Monday 10/19/2026 if shipped by air
Estimated Ship Date: Monday 10/19/2026 if shipped by air
Engine Block, Cast Iron, 4-Bolt Mains, 4 in. Diameter Bore, 2-Piece Rear Main Seal, Chevy, Small Block, Each
Part Number: DRT-31161111
Estimated Ship Date: Monday 10/19/2026 if shipped by air
Estimated Ship Date: Monday 10/19/2026 if shipped by air
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
Estimated Ship Date: Monday 10/19/2026 if shipped by air
Engine Block, Bare, Cast Iron, SHP, 4.125 in. Bore, 9.025 in. Deck Height, 4-Bolt Main Style, 2-Piece Rear Main Seal, Small Block, Chevy, Each
Part Number: DRT-31161211-B
Not Yet Reviewed
Estimated Ship Date: Feb 5, 2027 if ordered today
Estimated Ship Date: Feb 5, 2027 if ordered today
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
Estimated Ship Date: Monday 10/19/2026 if shipped by air
Estimated Ship Date: Monday 10/19/2026 if shipped by air
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
Estimated Ship Date: Monday 10/19/2026 if shipped by air
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: Monday 10/19/2026 if shipped by air
Estimated Ship Date: Monday 10/19/2026 if shipped by air
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
Estimated Ship Date: Monday 10/19/2026 if shipped by air
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
Need It Sooner? We recommend these similar substitute parts:
Summit Racing™ SPC Ford 351W Engine Block SUM-150205
Not Yet Reviewed
Estimated Ship Date: Monday 10/19/2026
Engine Block, LSX Bowtie, Bare, Cast Iron, 6-bolt Main Bolt Style, 9.260 in. Standard Deck, Semi Finished, Chevrolet, Each
Part Number: NAL-19417351
Estimated Ship Date: Feb 11, 2027 if ordered today
Estimated Ship Date: Feb 11, 2027 if ordered today
Need It Sooner? We recommend these similar substitute parts:
Summit Racing™ SPC Pro LS Engine Block SUM-150215
Not Yet Reviewed
Estimated Ship Date: Monday 10/19/2026
Engine Block SBC, 2PC, SIAM, 9.025 x 4.125, 350MAIN, CAST MC
Part Number: MLL-BPP12110343
Not Yet Reviewed
Estimated Ship Date: Monday 10/19/2026 if shipped by air
Estimated Ship Date: Monday 10/19/2026 if shipped by air
Engine Block, Bare, Aluminum, 93mm Bore, Finished-Honed, Oil Squirters Included, Cross-Bolted Mains, Liner Coating, Ford, Mustang, 5.0L Gen 3, Each
Part Number: FMS-M6010-M504VC
Not Yet Reviewed
Estimated Ship Date: Dec 31, 2026 if ordered today
Estimated Ship Date: Dec 31, 2026 if ordered today
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: Nov 23, 2026 if ordered today
Estimated Ship Date: Nov 23, 2026 if ordered today
Engine Block SBC, 2PC, SIAM, 9.025 x 4.000, 350MAIN, CAST MC
Part Number: MLL-BPP12110344
Not Yet Reviewed
Estimated Ship Date: Monday 10/19/2026 if shipped by air
Estimated Ship Date: Monday 10/19/2026 if shipped by air
Engine Block BBC, 2PC, SIAM, 9.800 x 4.500, CAST MC
Part Number: MLL-BPP12110324
Not Yet Reviewed
Estimated Ship Date: Dec 15, 2026 if ordered today
Estimated Ship Date: Dec 15, 2026 if ordered today
Need It Sooner? We recommend these similar substitute parts:
Chevrolet Performance 454 C.I.D. Bare Engine Blocks 19170538
Estimated Ship Date: Monday 10/19/2026
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 14, 2026 if ordered today
Estimated Ship Date: Dec 14, 2026 if ordered today
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