Availability
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, 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, Cast Iron, 4-Bolt Mains, 4.115 in. Diameter Bore, 2-Piece Rear Main Seal, Chevy, Small Block, Each
Part Number: WRL-084030
Estimated Ship Date: Aug 4, 2025 if ordered today
Estimated Ship Date: Aug 4, 2025 if ordered today
Bare Blocks, Dart SHP Pro 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-31162212
Not Yet Reviewed
Estimated Ship Date: Aug 15, 2025 if ordered today
Estimated Ship Date: Aug 15, 2025 if ordered today
Bare Blocks, Dart Little M Series, Cast Iron, 9.500 in. Deck Height, 4.125 in. Bore, 4-Bolt Main, 2-Piece Rear Main Seal, Small Block, Chevy, Each
Part Number: DRT-31182235
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
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
Estimated Ship Date: Aug 1, 2025 if ordered today
Estimated Ship Date: Aug 1, 2025 if ordered today
MOTOWN SBC, 9.025" x 4.120" x 400 mains, billet splayed caps - Raised Camshaft - .842" Bushing
Part Number: WRL-084130RC
Not Yet Reviewed
Estimated Ship Date: Aug 4, 2025 if ordered today
Estimated Ship Date: Aug 4, 2025 if ordered today
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: Aug 4, 2025 if ordered today
Estimated Ship Date: Aug 4, 2025 if ordered today
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-31182111
Not Yet Reviewed
Estimated Ship Date: Aug 15, 2025 if ordered today
Estimated Ship Date: Aug 15, 2025 if ordered today
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-31182115
Not Yet Reviewed
Estimated Ship Date: Aug 15, 2025 if ordered today
Estimated Ship Date: Aug 15, 2025 if ordered today
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-31182125
Not Yet Reviewed
Estimated Ship Date: Aug 15, 2025 if ordered today
Estimated Ship Date: Aug 15, 2025 if ordered today
Bare Blocks, Dart Little M Series, Cast Iron, 9.500 in. Deck Height, 4.000 in. Bore, 4-Bolt Main, 2-Piece Rear Main Seal, Small Block, Chevy, Each
Part Number: DRT-31182135
Not Yet Reviewed
Estimated Ship Date: Aug 15, 2025 if ordered today
Estimated Ship Date: Aug 15, 2025 if ordered today
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-31182211
Not Yet Reviewed
Estimated Ship Date: Aug 15, 2025 if ordered today
Estimated Ship Date: Aug 15, 2025 if ordered today
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-31182215
Not Yet Reviewed
Estimated Ship Date: Aug 15, 2025 if ordered today
Estimated Ship Date: Aug 15, 2025 if ordered today
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-31182225
Not Yet Reviewed
Estimated Ship Date: Aug 15, 2025 if ordered today
Estimated Ship Date: Aug 15, 2025 if ordered today
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-31192111
Not Yet Reviewed
Estimated Ship Date: Aug 15, 2025 if ordered today
Estimated Ship Date: Aug 15, 2025 if ordered today
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: Aug 15, 2025 if ordered today
Estimated Ship Date: Aug 15, 2025 if ordered today
Engine Block, Cast Iron, 400 Mains, 4.000 in. Bore, 2-Piece Rear Main Seal, Chevy, Small Block, Each
Part Number: DRT-31162111
Not Yet Reviewed
Estimated Ship Date: Aug 15, 2025 if ordered today
Estimated Ship Date: Aug 15, 2025 if ordered today
Engine Block, Cast Iron, 4-bolt Mains, 4.000 in. Diameter Bore, 2-piece Rear Main Seal, Chevrolet, Small Block, Each
Part Number: DRT-31162112
Not Yet Reviewed
Estimated Ship Date: Aug 15, 2025 if ordered today
Estimated Ship Date: Aug 15, 2025 if ordered today
Engine Block, Cast Iron, 4-Bolt Mains, 4.000 in. Diameter Bore, 2-Piece Rear Main Seal, Chevy, Small Block, Each
Part Number: DRT-31122111
Not Yet Reviewed
Estimated Ship Date: Aug 15, 2025 if ordered today
Estimated Ship Date: Aug 15, 2025 if ordered today
Engine Block, Cast Iron, 4-Bolt Mains, 4.000 in. Diameter Bore, 2-Piece Rear Main Seal, Chevy, Small Block, Each
Part Number: DRT-31122112
Not Yet Reviewed
Estimated Ship Date: Aug 15, 2025 if ordered today
Estimated Ship Date: Aug 15, 2025 if ordered today
Engine Block, Cast Iron, 4-Bolt Mains, 4.000 in. Diameter Bore, 2-Piece Rear Main Seal, Chevy, Small Block, Each
Part Number: DRT-31122121
Not Yet Reviewed
Estimated Ship Date: Aug 15, 2025 if ordered today
Estimated Ship Date: Aug 15, 2025 if ordered today
Engine Block, Cast Iron, 4-Bolt Mains, 4.000 in. Diameter Bore, 2-Piece Rear Main Seal, Chevy, Small Block, Each
Part Number: DRT-31122122
Not Yet Reviewed
Estimated Ship Date: Aug 15, 2025 if ordered today
Estimated Ship Date: Aug 15, 2025 if ordered today
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: Aug 15, 2025 if ordered today
Estimated Ship Date: Aug 15, 2025 if ordered today
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
Estimated Ship Date: Apr 13, 2026 if ordered today
Modal Header
Call To Order
This is a custom order part. You can order this part by Contacting Us.
Truck / SUV
Jeep®
Restoration
Stock Replacement
Late Model Muscle
Tools
Gifts, Clothing, & More
Circle Track
Street Rod
Powersports
Paint & Body
Marine
Jr Dragster
