Manley Chrysler 5.7L Hemi Forged Crankshaft - 4.050in Stroke

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. Stroke: 4.050 in. - Rod Journal: 2.000 in. - Reluctor Wheel: 58 Tooth - Bobweight: 1730 grams (Not Balanced/Non-Drilled) When installing these crankshafts in a VVT engine, you also need to order a crankshaft gear spacer part number 42000 - Crank is NOT balanced and has non-drilled counterweights - All 2013 and later 58 tooth reluctor wheels have a tooth width of .130”, along with a dimple in the rear face of the wheel - All reluctor wheels are attached with 4 fasteners

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

Upgrade your HEMI engine with the Manley Performance PRO SERIES forged crankshaft designed specifically for Chrysler small block HEMI engines. Crafted from premium 4340 steel forging, this crankshaft offers exceptional strength and durability, making it an ideal choice for high-performance applications. The 4.050-inch stroke transforms your 5.7L engine into a 392 cubic inch powerhouse, while also providing significant performance gains for 6.1L and 6.4L engines, increasing their displacement to 426 cubic inches. This crankshaft features small journal (2.000-inch) crank pin diameters and widths, delivering taller sidewalls on the rod journals for improved oil control and reduced windage, which helps enhance engine efficiency and longevity. The counterweights are profiled for 6.125-inch connecting rods, ensuring smooth operation at high RPMs.
The crankshaft includes a 58-tooth reluctor wheel with a .130-inch tooth width and a dimple on the rear face for precise engine timing signals. It is equipped with a dual keyed post for supercharger drive pulleys, making it suitable for forced induction setups. Manufactured through a multi-step heat treatment process and nitrided for added strength, this crankshaft is micro-polished, stress-relieved, shot-peened, and 100% magnafluxed to ensure quality and durability. Gun drilled mains and lightweight rod journals contribute to weight reduction, improving engine response. Please note that this crankshaft is not balanced and has non-drilled counterweights; for VVT engine installations, a crankshaft gear spacer (part number 42000) is required. Designed for performance and reliability, the Manley 4.050-inch stroke HEMI crankshaft is an excellent upgrade for enthusiasts seeking to maximize their engine's potential.
All components meet strict manufacturing standards, ensuring optimal performance in high-stress environments. Whether you're building a high-performance street engine or preparing for racing applications, this crankshaft provides the strength, precision, and compatibility needed for a successful build.

Features:

• Constructed from premium forged 4340 steel for strength and durability

• 4.050-inch stroke transforms 5.7L to 392 c.i. and increases displacement on larger engines

• Small journal (2.000-inch) crank pin diameters for better oil control and reduced windage

• Profiled counterweights designed for 6.125-inch connecting rods

• Includes a 58-tooth reluctor wheel with a .130-inch tooth width and rear dimple for precise timing

• Manufactured with multi-step heat treatment, nitriding, and micro-polishing for enhanced strength and smooth operation

• Gun drilled mains and lightweight rod journals for reduced weight and improved engine response

• Stress relieved, shot-peened, and 100% magnafluxed for quality assurance

• Dual keyed post for supercharger drive pulleys for forced induction applications

• Requires a crankshaft gear spacer (part number 42000) for VVT engine installations