1974 Engines & Components

Crankshaft, 2-piece seal, Internal balance, Forged 4340 Steel, 3.500 in. Stroke, Chevy, 350, 2.000 Pin, Each

Part Number: CPI-SAG143-CM

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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, 3.875 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, 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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CRANK-4340 FORGE 4.375 STROKE

Part Number: MAN-190250

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Estimated Ship Date: Dec 15, 2025 if ordered today

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KIT-SBC 383 3.750/4.040

Part Number: MAN-290940

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ROTATING ASSEMBLY KIT-SBC 383 3.750/4.040

Part Number: MAN-290940H

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Estimated Ship Date: Dec 15, 2025 if ordered today

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KIT-SBC 383 3.750/4.030

Part Number: MAN-290030

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Dec 15, 2025 if ordered today

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KIT-SBC 383 3.750/4.030

Part Number: MAN-290030H

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KIT-SBC 383 3.750/4.030

Part Number: MAN-290130

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ROTATING ASSEMBLY KIT-SBC 383 3.750/4.030

Part Number: MAN-290130H

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ROTATING ASSEMBLY KIT-SBC 355 3.480/4.030

Part Number: MAN-290730H

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Estimated Ship Date: Dec 15, 2025 if ordered today

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KIT-SBC 355 3.480/4.030

Part Number: MAN-290830

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ROTATING ASSEMBLY KIT-BBC 548 4.250/4.530 20cc D

Part Number: MAN-38548R

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Estimated Ship Date: Dec 15, 2025 if ordered today

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ROTATING ASSEMBLY KIT-BBC 548 4.250/4.530 20cc D

Part Number: MAN-38548RH

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ROTATING ASSEMBLY KIT-BBC 548 4.250/4.530 20cc D

Part Number: MAN-38548RHX

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ROTATING ASSEMBLY KIT-BBC 555 4.250/4.560 F/T

Part Number: MAN-38555R

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ROTATING ASSEMBLY KIT-BBC 555 4.250/4.560 F/T

Part Number: MAN-38555RH

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Estimated Ship Date: Dec 15, 2025 if ordered today

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ROTATING ASSEMBLY

Part Number: MAN-38555RHX

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ROTATING ASSEMBLY KIT-BBC 565 4.250/4.600 DOME

Part Number: MAN-39565R

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Estimated Ship Date: Dec 15, 2025 if ordered today

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ROTATING ASSEMBLY KIT-BBC 565 4.250/4.600 DOME

Part Number: MAN-39565RHX

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KIT-BBC 615 4.625/4.600 43cc DOME

Part Number: MAN-39615

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ROTATING ASSEMBLY KIT-BBC 615 4.625/4.600 43cc D

Part Number: MAN-39615H

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ROTATING ASSEMBLY KIT-BBC 615 4.625/4.600 43cc D

Part Number: MAN-39615HX

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ROTATING ASSEMBLY KIT-BBC 615 4.625/4.600 43cc D

Part Number: MAN-39615R

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