Manley Engines & Components

Crankshaft, 2-Piece Seal, Internal Balance, Forged 4340 Steel, 4.250 in. Stroke, Chevy, 7.4L, Each

Part Number: MAN-190140

5.0 out of 5 stars ( 2 )

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Crankshaft, 2-Piece Seal, Internal Balance, Forged 4340 Steel, 4.750 in. Stroke, Chevy, 7.4L, Each

Part Number: MAN-190280

4.0 out of 5 stars ( 1 )

Estimated Ship Date: May 4, 2026 if ordered today

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Crankshaft, Chevy big block, forged, 4.375 stroke, w/ center counterweights

Part Number: MAN-190320

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Estimated Ship Date: May 4, 2026 if ordered today

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KIT-SBC 383 3.750/4.040

Part Number: MAN-290940

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KIT-SBC 383 3.750/4.030

Part Number: MAN-290030R

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KIT-SBC 383 3.750/4.030

Part Number: MAN-290030H

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Crankshaft, 2-Piece Seal, Internal Balance, Forged 4340 Steel, 4.00 in. Stroke, Chevy, 7.4L, Each

Part Number: MAN-190170

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Estimated Ship Date: May 4, 2026 if ordered today

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ROTATING ASSEMBLY KIT-SBC 383 3.750/4.040

Part Number: MAN-290040RH

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Estimated Ship Date: May 4, 2026 if ordered today

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KIT-SBC 383 3.750/4.030

Part Number: MAN-290030RH

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ROTATING ASSEMBLY KIT-SBC 383 3.750/4.040

Part Number: MAN-290940R

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Estimated Ship Date: May 4, 2026 if ordered today

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ROTATING ASSEMBLY KIT-SBC 383 3.750/4.040

Part Number: MAN-290940RH

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Estimated Ship Date: May 4, 2026 if ordered today

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KIT-BBC 632 4.750/4.600 -3cc F

Part Number: MAN-28632H

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Estimated Ship Date: May 4, 2026 if ordered today

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KIT-BBC 632 4.750/4.600 -3cc F

Part Number: MAN-28632HX

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Estimated Ship Date: May 4, 2026 if ordered today

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ROTATING ASSEMBLY KIT-BBC 572 4.250/4.625 -3cc F

Part Number: MAN-38572RHXX

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Estimated Ship Date: May 4, 2026 if ordered today

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ROTATING ASSEMBLY KIT-SBC 383 3.750/4.040

Part Number: MAN-290040R

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ROTATING ASSEMBLY KIT-SBC 383 3.750/4.030

Part Number: MAN-290040H

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Estimated Ship Date: May 4, 2026 if ordered today

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KIT-SBC 383 3.750/4.040

Part Number: MAN-290040

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ROTATING ASSEMBLY KIT-SBC 383 3.750/4.040

Part Number: MAN-290940H

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Estimated Ship Date: May 4, 2026 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: May 4, 2026 if ordered today

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