Manley Crankshaft -4.050 Hemi 58T Relu

Manley Performance “PRO SERIES” stroker crankshaft designed for the Gen III small block HEMI engine. Manufactured from a premium 4340 steel forging, these cranks feature a 4.050” stroke which can turn your 5.7L into a 392 c.i. engine and your 6.1L/6.4L into a 426 c.i. engine. The Manley 4.050” stroke HEMI crankshaft features small block Chevy small journal (2.000") crank pin diameters and widths. This provides taller "side walls" on the crankshaft rod journals for better oil control and reduced windage. Counterweights are profiled for 6.125" connecting rods.

Additional Information

Stroke: 4.050 in. - Rod Journal: 2.000 in. - Reluctor Wheel: 58 Tooth - Bobweight: 1770 grams

Part Type

Engine Crankshaft

• Counterweights fully profiled
• Dual keyed post for supercharger drive pulleys
• Gun drilled mains and lightened rod journals for weight reduction
• Micro polished large radius journals (narrow rod bearings required)
• Multi-step heat treatment process and nitrided for added strength to already strong forged 4340 material
• Stress relieved, shot-peened and 100% magnafluxed

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Reference Information