Engines & Components

Chevy Gen. 5 LT, 4340 Forged Steel Crankshaft, 4.000 stroke, 58X Reluctor, Gun-drilled and Lightened, Nitride Hardened, Narrowed Rod Bearings Req.

Part Number: SUM-180LT400058

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SINGLE HEAD 227

Part Number: AFR-1068-1

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CRANK-4340 4.000 STROKE

Part Number: MAN-192124

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

Part Number: SCA-440072LW

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Estimated Ship Date: Feb 9, 2026 if ordered today

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Cylinder Head, Merlin, Cast Iron, Assembled, 119cc Chamber, 269cc Intake Runner, Chevy, Big Block, Each

Part Number: WRL-030040-1

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Jan 2, 2026 if ordered today

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Cylinder Head, Merlin, Cast Iron, Assembled, 119cc Chamber, 269cc Intake Runner, Chevy, Big Block, Each

Part Number: WRL-030040-2

1.0 out of 5 stars ( 1 )

Estimated Ship Date: Jan 2, 2026 if ordered today

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Cylinder Head, Merlin, Cast Iron, Assembled, 119cc Chamber, 345cc Intake, Exhaust Port Is Raised 0.600 in., Rectangular Intake Port, Chevy, Big Block

Part Number: WRL-030630-1

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Estimated Ship Date: Jan 2, 2026 if ordered today

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Crankshaft, 1-Piece Seal, Internal Balance, Forged 4340 Steel, 4 in. Stroke, Chevy, Small Block LS, Each

Part Number: SCA-4LS140062-S

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Estimated Ship Date: Feb 9, 2026 if ordered today

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Forged 4340 Standard Weight

Part Number: SCA-4426010

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Estimated Ship Date: Feb 9, 2026 if ordered today

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CRANKSHAFT

Part Number: SCA-481029

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Estimated Ship Date: Feb 9, 2026 if ordered today

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Cylinder Head, Bare, Cast Iron, 118cc Combustion Chamber, Chevy, Big Block, 454/502, Each

Part Number: NAL-12562925

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Estimated Ship Date: Mar 30, 2026 if ordered today

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FORD RS CRANK MODIFIED - FULL COUNTERWEIGHT

Part Number: CPI-QH47KWO-F2

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Estimated Ship Date: Jan 21, 2026 if ordered today

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CRANKSHAFT

Part Number: NAL-12732515

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Estimated Ship Date: Mar 31, 2026 if ordered today

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440 CHRYSLER, STD WEIGHT CHRYSLER

Part Number: SCA-444014

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Estimated Ship Date: Feb 9, 2026 if ordered today

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HEMI CHRYSLER, STD WEIGHT CHRYSLER

Part Number: SCA-4HEMI37910

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Estimated Ship Date: Feb 9, 2026 if ordered today

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LS SERPENTINE FRONT DRIVE SYSTEM - BRACKETS, PULLEYS & TENSIONER, WITHOUT A/C COMPRESSOR, POLISHED

Part Number: TSN-81210-2P

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Estimated Ship Date: Feb 5, 2026 if ordered today

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LT SERPENTINE FRONT DRIVE SYSTEM - BRACKETS, PULLEYS & CUSTOMIZED BILLET ALUM. TENSIONER, POLISHED

Part Number: TSN-81500-2P

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Estimated Ship Date: Feb 5, 2026 if ordered today

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Crankshaft, 2-Piece Seal, External Balance, Forged 4340 Steel, 3.580 in. Stroke, Dodge, Plymouth, 340, Each

Part Number: SCA-434010

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Estimated Ship Date: Feb 9, 2026 if ordered today

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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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Estimated Ship Date: Feb 9, 2026 if ordered today

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FLATHEAD FORD

Part Number: SCA-923940

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Estimated Ship Date: Feb 9, 2026 if ordered today

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FORGED CRANKSHAFTS

Part Number: SCA-4426011

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Estimated Ship Date: Feb 3, 2026 if ordered today

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Crankshaft, 2-Piece Seal, Internal Balance, Forged 4340 Steel, 4.50 in. Stroke, 6.760 Rod, Mopar, 426 Hemi, Each

Part Number: SCA-4426020

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Estimated Ship Date: Feb 3, 2026 if ordered today

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Crankshaft, 2-Piece Seal, External Balance, Forged 4340 Steel, 3.750 in. Stroke, Chrysler, 440, Each

Part Number: SCA-444010

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Estimated Ship Date: Feb 3, 2026 if ordered today

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Forged 4340 Standard Weight

Part Number: SCA-4351C62

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Estimated Ship Date: Feb 3, 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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Estimated Ship Date: Feb 3, 2026 if ordered today

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