Manley Performance 191958NB Forged Crankshaft for Chrysler 5.7L HEMI with 4.050-inch 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 Chrysler 5.7L HEMI engine with the Manley Performance 191958NB forged crankshaft, engineered to enhance performance and durability. Crafted from premium 4340 steel forging, this crankshaft features a 4.050-inch stroke that transforms a 5.7L engine into a 392 cubic inch displacement powerhouse. It is designed with small journal (2.000-inch) crank pin diameters, offering taller side walls on the rod journals for improved oil control and reduced windage, which contributes to better engine longevity and efficiency. The counterweights are meticulously profiled for compatibility with 6.125-inch connecting rods, ensuring balanced operation during high-performance applications. This crankshaft includes a 58-tooth reluctor wheel with a 0.130-inch tooth width and a dimpled rear face, suitable for engines equipped with variable valve timing (VVT). It features a dual keyed post for supercharger drive pulleys, and the micro-polished large radius journals require narrow bearing sizes for optimal clearance. Additional features include a multi-step heat treatment process, nitriding for added strength, and gun-drilled mains and lightened rod journals to reduce weight. Stress relieved, shot-peened, and 100% magnafluxed, the crankshaft is built for strength and reliability in demanding conditions. Please note, the crank is not balanced and has non-drilled counterweights; a crankshaft gear spacer (part number 42000) is recommended for VVT applications. This component is ideal for enthusiasts looking to build a high-performance, reliable engine with a significant power increase. Whether you're upgrading a stock setup or building a custom performance engine, the Manley 191958NB forged crankshaft provides the durability and performance necessary for competitive racing or street performance.

Features:

• Constructed from high-strength forged 4340 steel for durability

• s a 4.050-inch stroke for significant displacement increase

• Small journal (2.000-inch) crank pin diameters for improved oil control

• Micro-polished large radius journals for smooth operation

• Gun drilled mains and lightened rod journals for weight reduction

• Fully profiled counterweights for balanced performance

• Includes a 58-tooth reluctor wheel with a 0.130-inch tooth width

• Dual keyed post designed for supercharger drive pulleys

• Multi-step heat treatment and nitriding for enhanced strength

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

• Designed for high-performance VVT engines (requires spacer part 42000)

Air Freight Prohibited: false
Not Carb Approved: false
Carb Acknowledgement Required: false
Ltl Freight Required: false
Prop 65: Y
Part Type: automotive
Epa: N/A
Regular Stock: t
Units Per Sku: 1