CHEVROLET Chevy small block Gen I Crankshafts

Crank, 2-piece Seal, Internal Balance, Forged 4340 Steel, 3.750 in. Stroke, 2.100 in. Pin, Chevy, 350, BB Post

Part Number: CPI-SMJ11A-MG

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Estimated Ship Date: Jan 16, 2026 if ordered today

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Crankshaft, 2-piece seal, Internal balance, Forged 4340 Steel, 4.000 in. Stroke, Chevy, 400, 2.100 Pin, Each

Part Number: CPI-SAO21A-MG

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Estimated Ship Date: Dec 22, 2025 if ordered today

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Crankshaft, 2-piece seal, Internal balance, Forged 4340 Steel, 3.480 in. Stroke, Chevy, 350, 2.100 Pin, Each

Part Number: CPI-SAF11A-MG

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Estimated Ship Date: Jan 16, 2026 if ordered today

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4340 Forged Pro Series Big Block Post

Part Number: SCA-773505621

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Estimated Ship Date: Jan 15, 2026 if ordered today

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350 1-PC REAR SEAL SUPERLIGHT

Part Number: SCA-435010L-3

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Estimated Ship Date: Jan 15, 2026 if ordered today

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4340 Forged Superlight

Part Number: SCA-435028-3

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Estimated Ship Date: Jan 15, 2026 if ordered today

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Crankshaft, Magnum, 2-Piece Seal, Forged 4340 Steel, 3.875 in. Stroke, 6.000 in. Rods, 2.000 Pin, Big Block Post, Chevy, Small Block, Each

Part Number: CPI-SMM14A-MG

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Estimated Ship Date: Jan 21, 2026 if ordered today

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Crankshaft, Magnum, 2-Piece Seal, Forged 4340 Steel, 4.000 in. Stroke, 6.000 in. Rods, 2.000 Pin, 350 Main, Big Block Post, Chevy, Small Block, Each

Part Number: CPI-SMO14A-MG

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Estimated Ship Date: Jan 21, 2026 if ordered today

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Crankshaft, Magnum, 2-Piece Seal, Forged 4340 Steel, 4.000 in. Stroke, 6.000 in. Rods, 2.100 Pin, 350 Main, Big Block Post, Chevy, Small Block, Each

Part Number: CPI-SMO11A-MG

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Estimated Ship Date: Dec 22, 2025 if ordered today

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4340 Forged Pro Series

Part Number: SCA-435032-2

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Estimated Ship Date: Jan 15, 2026 if ordered today

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Crankshaft, 2-Piece Seal, Internal Balance, Forged 4340 Steel, 3.750 in. Stroke, Chevy, 350, Each

Part Number: SCA-435050-3

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Estimated Ship Date: Jan 15, 2026 if ordered today

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Crankshaft, 2-Piece Seal, Internal Balance, Forged 4340 Steel, 3.480 in. Stroke, Chevy, 350, Each

Part Number: SCA-435010-3

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Estimated Ship Date: Jan 15, 2026 if ordered today

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4340 Forged Superlight

Part Number: SCA-435018-3

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Estimated Ship Date: Jan 15, 2026 if ordered today

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Crankshaft, 2-Piece Seal, Internal Balance, Forged 4340 Steel, 3.500 in. Stroke, Chevy, 350, Each

Part Number: SCA-435020-3

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Estimated Ship Date: Jan 15, 2026 if ordered today

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Crankshaft, 2-piece Seal, Internal Balance, Forged 4340 Steel, 3.875 in. Stroke, 2.100 in. Pin, Chevy, 400

Part Number: CPI-SAM21A-MG

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Estimated Ship Date: Jan 21, 2026 if ordered today

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Crankshaft, 2-Piece Seal, Internal Balance, Forged 4340 Steel, 3.750 in. Stroke, Chevy, 350, Each

Part Number: SCA-435050-2

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Estimated Ship Date: Jan 15, 2026 if ordered today

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4340 Forged Superlight

Part Number: SCA-435052-3

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Estimated Ship Date: Jan 15, 2026 if ordered today

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Crankshaft, 2-Piece Seal, Internal Balance, Forged 4340 Steel, 3.480 in. Stroke, Chevy, 350, Each

Part Number: SCA-435012-3

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Estimated Ship Date: Jan 15, 2026 if ordered today

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4340 Forged Pro Series

Part Number: SCA-435018-2

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Estimated Ship Date: Jan 15, 2026 if ordered today

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4340 Forged Pro Series

Part Number: SCA-435022-2

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Estimated Ship Date: Jan 15, 2026 if ordered today

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4340 Forged Pro Series Big Block Post

Part Number: SCA-773507620

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Estimated Ship Date: Jan 15, 2026 if ordered today

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4340 Forged Pro Series Big Block Post

Part Number: SCA-773507621

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Estimated Ship Date: Jan 15, 2026 if ordered today

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4340 Forged Pro Series Big Block Post

Part Number: SCA-773502021

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Estimated Ship Date: Jan 15, 2026 if ordered today

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4340 Forged Pro Series Big Block Post

Part Number: SCA-773508620

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Estimated Ship Date: Jan 15, 2026 if ordered today

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4340 Forged Pro Series Big Block Post

Part Number: SCA-773508621

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Estimated Ship Date: Jan 15, 2026 if ordered today

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