Manley Performance Modern Hemi Crankshaft

Chrysler 5.7L / 6.4L Modern HEMI V8 Engines

192558

Overview:

The Manley Chrysler 5.7L / 6.4L Modern HEMI Crankshaft is a precision-engineered replacement crankshaft designed specifically for Chrysler’s modern HEMI V8 engines. Whether you are rebuilding your engine for performance gains or restoring it to factory specifications, this crankshaft offers the durability and reliability required to handle increased power and torque demands.

Ideal for performance enthusiasts, engine builders, and professional rebuilders, this crankshaft supports both the 5.7L and 6.4L HEMI platforms, providing a direct fit solution that maintains OEM geometry and balance. It is engineered to withstand the rigors of street, track, and high-performance applications.

With a 4.050-inch stroke and 58-tooth reluctor wheel (RELU), this crankshaft ensures compatibility with modern engine management systems and ignition timing setups, helping you maintain precise engine control and smooth operation.

Key Features:

This crankshaft combines advanced manufacturing techniques and high-quality materials to deliver dependable performance and longevity. Key features include:

• Compatible with Chrysler 5.7L and 6.4L modern HEMI V8 engines, ensuring a direct replacement without modification.
• 4.050-inch stroke designed to optimize displacement and power potential for these engine platforms.
• 58-tooth reluctor wheel (RELU) for accurate crank position sensing and seamless integration with factory or aftermarket engine control units.
• Manufactured from premium forged steel for superior strength and resistance to fatigue under high-stress conditions.
• Precision machined journals and bearing surfaces to maintain OEM tolerances and ensure smooth engine operation.
• Balanced to reduce vibration and improve engine longevity, contributing to a smoother and more reliable powertrain.
• Designed to support both stock rebuilds and performance upgrades, making it versatile for a wide range of builds.

Construction & Design:

Manley Performance utilizes advanced forging and machining processes to produce this crankshaft, ensuring it meets or exceeds OEM standards. The forged steel construction provides exceptional tensile strength and durability, essential for handling the increased cylinder pressures common in modern HEMI engines.

The crankshaft’s journals are meticulously ground and polished to exacting specifications, promoting optimal bearing life and reducing friction. The integrated 58-tooth reluctor wheel is precisely positioned to maintain accurate engine timing signals, critical for modern ignition and fuel injection systems.

Every crankshaft undergoes strict quality control and balancing procedures to minimize vibrations and enhance engine smoothness, which contributes to improved drivability and component longevity.

Installation & Fitment:

This crankshaft is designed as a direct replacement for Chrysler’s 5.7L and 6.4L modern HEMI engines, fitting seamlessly into existing engine blocks without the need for modification. It uses factory mounting points and maintains OEM journal sizes and configurations.

No cutting, drilling, or special tuning is required for installation, making it suitable for professional rebuilders and experienced enthusiasts alike. Proper installation with compatible bearings and components is recommended to ensure optimal performance and reliability.

• Direct bolt-in replacement for 5.7L and 6.4L modern HEMI engines
• Maintains OEM journal sizes and configurations
• No modifications or special tuning required

What’s Included

• Manley forged steel crankshaft with 4.050-inch stroke
• Integrated 58-tooth reluctor wheel (RELU)
• Packaging designed to protect the crankshaft during shipping

Ideal For:

• Engine builders performing rebuilds or upgrades on Chrysler 5.7L and 6.4L HEMI engines
• Performance enthusiasts seeking a durable crankshaft capable of handling increased power and torque
• Street and track applications requiring reliable, high-quality rotating assembly components
• Rebuilders aiming to maintain OEM specifications with premium aftermarket quality

Manley Performance manufactures high-strength engine internals for serious builds—especially forged pistons, connecting rods, valves, and valvetrain components developed for racing and high-output street applications. If you’re building for boost, high compression, or sustained RPM, Manley is a common choice for parts engineered to take abuse and keep power reliable.