1981 Crankshafts

Crankshaft, 2-Piece Seal, Internal Balance, Forged 4340 Steel, 4.00 in. Stroke, Chrysler, 273, 318, 340, Each

Part Number: ESP-434040006123

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Crankshaft, Magnum, 2-Piece Seal, Forged 4340 Steel, 3.500 in. Stroke, 6.385 in. Rod, 2.200 Pin, Internal Balance, Chevy, Big Block, Each

Part Number: CPI-BBG42B-MG

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Crankshaft, 2-Piece Seal, External Balance, Cast Steel, 3.895 in. Stroke, AMC, 4.0L, Each

Part Number: CPI-S28000

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Crankshaft, 2-Piece Seal, Internal Balance, Forged 4340 Steel, 4.000 in. Stroke, Chevy, 350, Each

Part Number: SUM-SBC35040002P

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SB Windsor 4340 Forged crank, 3.000 in. stroke, 5.400 in. Rod, Internally Balanced, Req's Narrowed Rod Bearings, one or two piece rear main seal

Part Number: SUM-SBF3023000I

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4340 Forged Pro Series Lightweight

Part Number: SCA-445415C-2

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Crankshaft, 2-Piece Seal, External Balance, Forged 4340 Steel, 4.250 in. Stroke, 6.135 Rod, Chevy, 454, Each

Part Number: SCA-445420

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4340 Forged Pro Series Lightweight

Part Number: SCA-445405C-2

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Crankshaft, 28 oz. Internal Balance, Forged 4340 Steel, 3.500 in. Stroke, Ford, 351W, Each

Part Number: SCA-4351W16

4.0 out of 5 stars ( 1 )

Estimated Ship Date: Mar 6, 2026 if ordered today

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Crankshaft, Internal Balance, Forged 4340 Steel, 4 in. Stroke, Ford, 351W, Each

Part Number: SCA-4351W50

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Crankshaft, Lightweight, Forged 4340 Steel, 4.100 in. Stroke, Internal Balance, Ford, 351W, Each

Part Number: SCA-4351W60-2

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Crankshaft, Superlight, Forged 4340 Steel, 4.100 in. Stroke, Internal Balance, Ford, 351W, Each

Part Number: SCA-4351W60-3

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Crankshaft, Lightweight, Forged 4340 Steel, 3.580 in. Stroke, Internal Balance, Chrysler, 360, Each

Part Number: SCA-436010-2

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Crankshaft, 2-Piece Seal, Internal Balance, Forged 4340 Steel, 4.000 in. Stroke, Chrysler, 360, Each

Part Number: SCA-436020-2

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Crankshaft, Forged 4340 Steel, Superlite, 4.25 in. Stroke, Chevy, 454, 2-Piece Seal, Will Internal Balance

Part Number: SCA-445425-3

5.0 out of 5 stars ( 1 )

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4340 Forged Superlight

Part Number: SCA-445425C-3

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Engine Crankshaft, Chevy 4-454-4375-6385-2 454 Big Block Forged 4340 Steel

Part Number: SCA-445426-2

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Crankshaft, Standard Weight, Forged 4340 Steel, 4.375 in. Stroke, Internal Balance, Chevy, 454, Each

Part Number: SCA-445426C

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4340 Forged Pro Series Lightweight

Part Number: SCA-445426C-2

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4340 Forged Superlight

Part Number: SCA-445426C-3

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Crankshaft 4-454-4375-6635, Chevy Crankshaft Forged 4340 Strd Wgt 454 2-Piece Rear 4.375 Stroke 6.535 Length 2

Part Number: SCA-445428

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Crankshaft, Standard Weight, Forged 4340 Steel, 4.500 in. Stroke, Internal Balance, Chevy, 454, Each

Part Number: SCA-445430C

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4340 Forged Pro Series Lightweight

Part Number: SCA-445430C-2

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4340 Forged Superlight

Part Number: SCA-445430C-3

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Crankshaft, 1-Piece Seal, Internal Balance, No Center Counterweights, Chevy, Big Block, Each

Part Number: SCA-445430L

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