Availability
Engine Block, Aluminum, 4-Bolt Mains, 4.000 in. Diameter Bore, 2-Piece Rear Main Seal, Chevy, Small Block, Each
Part Number: BRO-8B1150
Not Yet Reviewed
Estimated Ship Date: Dec 15, 2025 if ordered today
Estimated Ship Date: Dec 15, 2025 if ordered today
Engine Block, Aluminum, 4-Bolt Mains, 4.000 in. Diameter Bore, 2-Piece Rear Main Seal, Chevy, Small Block, Each
Part Number: BRO-8B1150-A
Estimated Ship Date: Dec 15, 2025 if ordered today
Estimated Ship Date: Dec 15, 2025 if ordered today
383c.i. Truck Edition Builder Series, Fuel Injected, 700R4 Automatic 4WD Ready Transmission w/Polished Pulley Kit. Incl.30 month/50,000 warranty&Dyno
Part Number: MLL-B383FK4WD
Not Yet Reviewed
Estimated Ship Date: Dec 1, 2025 if ordered today
Estimated Ship Date: Dec 1, 2025 if ordered today
383 c.i. Standard Edition Builder Series, Fuel Injected, TKX Manual Transmission w/Polished Pulley Kit. Incl. 30 month / 50,000 warranty & Dyno
Part Number: MLL-B383FKTKX
Not Yet Reviewed
Estimated Ship Date: Dec 1, 2025 if ordered today
Estimated Ship Date: Dec 1, 2025 if ordered today
383 c.i. Truck Edition Builder Series, Carbureted, 700R4 Automatic 4WD Ready Transmission w/Polished Pulley Kit. Incl. 30 month/50,000 warranty & Dyno
Part Number: MLL-B383K4WD
Not Yet Reviewed
Estimated Ship Date: Dec 1, 2025 if ordered today
Estimated Ship Date: Dec 1, 2025 if ordered today
383 c.i. Standard Edition Builder Series, Carbureted, TKX Manual Transmission w/Polished Pulley Kit. Incl. 30 month/50,000 warranty & Dyno
Part Number: MLL-B383KTKX
Not Yet Reviewed
Estimated Ship Date: Dec 1, 2025 if ordered today
Estimated Ship Date: Dec 1, 2025 if ordered today
400 c.i. Standard Edition Builder Series, Carbureted, 700R4 Automatic Transmission w/Polished Pulley Kit. Incl. 30 month/50,000 warranty & Dyno
Part Number: MLL-B400K700
Not Yet Reviewed
Estimated Ship Date: Dec 1, 2025 if ordered today
Estimated Ship Date: Dec 1, 2025 if ordered today
400 c.i. Standard Edition Builder Series, Carbureted, TKX Manual Transmission w/Polished Pulley Kit. Incl. 30 month/50,000 warranty & Dyno
Part Number: MLL-B400KTKX
Not Yet Reviewed
Estimated Ship Date: Dec 1, 2025 if ordered today
Estimated Ship Date: Dec 1, 2025 if ordered today
400 c.i. Standard Edition Builder Series, Fuel Injected, TKX Manual Transmission w/Polished Pulley Kit. Incl. 30 month/50,000 warranty & Dyno
Part Number: MLL-B400FKTKX
Not Yet Reviewed
Estimated Ship Date: Dec 1, 2025 if ordered today
Estimated Ship Date: Dec 1, 2025 if ordered today
Crankshaft, 2-piece seal, Internal balance, Forged 4340 Steel, Custom Order, Chevy, Each
Part Number: CRO-95120
Not Yet Reviewed
Estimated Ship Date: Feb 23, 2026 if ordered today
Estimated Ship Date: Feb 23, 2026 if ordered today
Crankshaft, 2-piece seal, Internal balance, Forged 4340 Steel, 3.500 in. Stroke, Chevy, Each
Part Number: CRO-95122
Not Yet Reviewed
Estimated Ship Date: Feb 23, 2026 if ordered today
Estimated Ship Date: Feb 23, 2026 if ordered today
Crankshaft, 2-piece seal, Internal Balance, Forged 4340 Steel, 3.562 in. Stroke, Custom Order, Chevy, Each
Part Number: CRO-95123
Not Yet Reviewed
Estimated Ship Date: Feb 23, 2026 if ordered today
Estimated Ship Date: Feb 23, 2026 if ordered today
Crankshaft, 2-piece seal, Internal balance, Forged 4340 Steel, 3.750 in. Stroke, Chevy, Each
Part Number: CRO-95125
Not Yet Reviewed
Estimated Ship Date: Feb 23, 2026 if ordered today
Estimated Ship Date: Feb 23, 2026 if ordered today
Crankshaft, 2-piece seal, Internal balance, Forged 4340 Steel, 4.000 in. Stroke, Chevy, Each
Part Number: CRO-95128
Not Yet Reviewed
Estimated Ship Date: Feb 23, 2026 if ordered today
Estimated Ship Date: Feb 23, 2026 if ordered today
Crankshaft, 2-Piece Seal, Internal Balance, Forged 4340 Steel, 3.250 in. Stroke, Custom Order, Chevy, 350, 400
Part Number: CRO-LW95119
Not Yet Reviewed
Estimated Ship Date: Feb 23, 2026 if ordered today
Estimated Ship Date: Feb 23, 2026 if ordered today
Crankshaft, 2-Piece Seal, Internal Balance, Forged 4340 Steel, 3.480 in. Stroke, Custom Order, Chevy, 350, 400
Part Number: CRO-LW95121
Not Yet Reviewed
Estimated Ship Date: Feb 23, 2026 if ordered today
Estimated Ship Date: Feb 23, 2026 if ordered today
Crankshaft, 2-Piece Seal, Internal Balance, Forged 4340 Steel, 3.500 in. Stroke, Custom Order, Chevy, 350, 400
Part Number: CRO-LW95122
Not Yet Reviewed
Estimated Ship Date: Feb 23, 2026 if ordered today
Estimated Ship Date: Feb 23, 2026 if ordered today
Crankshaft, 2-Piece Seal, Internal Balance, Forged 4340 Steel, 3.625 in. Stroke, Custom Order, Chevy, 350, 400
Part Number: CRO-LW95124
Not Yet Reviewed
Estimated Ship Date: Feb 23, 2026 if ordered today
Estimated Ship Date: Feb 23, 2026 if ordered today
Crankshaft, 2-Piece Seal, Internal Balance, Forged 4340 Steel, 3.750 in. Stroke, Custom Order, Chevy, 350, 400
Part Number: CRO-LW95125
Not Yet Reviewed
Estimated Ship Date: Feb 23, 2026 if ordered today
Estimated Ship Date: Feb 23, 2026 if ordered today
Crankshaft, 2-Piece Seal, Internal Balance, Forged 4340 Steel, 3.800 in. Stroke, Custom Order, Chevy, 350, 400
Part Number: CRO-LW95126
Not Yet Reviewed
Estimated Ship Date: Feb 23, 2026 if ordered today
Estimated Ship Date: Feb 23, 2026 if ordered today
Crankshaft, 2-Piece Seal, Internal Balance, Forged 4340 Steel, 4.000 in. Stroke, Custom Order, Chevy, 350, 400
Part Number: CRO-LW95128
Not Yet Reviewed
Estimated Ship Date: Feb 23, 2026 if ordered today
Estimated Ship Date: Feb 23, 2026 if ordered today
Crankshaft, 2-Piece Seal, Internal Balance, Forged 4340 Steel, 4.125 in. Stroke, Custom Order, Chevy, 350, 400
Part Number: CRO-LW95129
Not Yet Reviewed
Estimated Ship Date: Feb 23, 2026 if ordered today
Estimated Ship Date: Feb 23, 2026 if ordered today
Crankshaft, 2-Piece Seal, Internal Balance, Forged 4340 Steel, 4.000 in. Stroke, Custom Order, Chevy, 350, 400
Part Number: CRO-ML95128
Not Yet Reviewed
Estimated Ship Date: Feb 23, 2026 if ordered today
Estimated Ship Date: Feb 23, 2026 if ordered today
Crankshaft, 2-Piece Seal, Internal Balance, Forged 4340 Steel, 3.480 in. Stroke, Custom Order, Chevy, 350, 400
Part Number: CRO-UL95121
Not Yet Reviewed
Estimated Ship Date: Feb 23, 2026 if ordered today
Estimated Ship Date: Feb 23, 2026 if ordered today
Crankshaft, 2-Piece Seal, Internal Balance, Forged 4340 Steel, 3.562 in. Stroke, Custom Order, Chevy, 350, 400
Part Number: CRO-UL95123
Not Yet Reviewed
Estimated Ship Date: Feb 23, 2026 if ordered today
Estimated Ship Date: Feb 23, 2026 if ordered today
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