Manley Performance Crankshaft -4.050 HEMI 58T Relu

Fitment: Chrysler/Dodge 5.7L & 6.1L HEMI V8 Engines

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Overview:

The Manley Performance Crankshaft -4.050 HEMI 58T Relu is a precision-engineered replacement crankshaft designed specifically for Chrysler and Dodge HEMI V8 engines. This crankshaft is crafted to meet the demands of performance enthusiasts seeking enhanced durability and reliability for their high-output HEMI builds.

Ideal for street performance, racing, and engine rebuilds, this crankshaft supports increased stroke displacement with its -4.050" specification, allowing for improved torque and power potential. Whether you are upgrading your engine for more aggressive driving or restoring a classic HEMI, this crankshaft delivers the strength and balance required for dependable operation.

Key Features:

Manley Performance designs each crankshaft with meticulous attention to detail, ensuring optimal performance and longevity. Key features include:

• Precision forged construction for superior strength and fatigue resistance.
• 4.050" stroke dimension tailored for HEMI V8 applications to enhance displacement and torque output.
• 58-tooth reluctor wheel integrated for accurate ignition timing and compatibility with factory electronics.
• Relubricated (Relu) finish to ensure smooth operation and reduced wear during initial break-in.
• Balanced to OEM specifications to maintain engine smoothness and reduce vibrations.
• Compatible with stock and aftermarket components designed for 5.7L and 6.1L HEMI engines.
• Manufactured to exacting tolerances for reliable fitment and performance.

Construction & Design:

This crankshaft is forged from high-grade alloy steel, providing exceptional tensile strength and resistance to stress under high RPM and load conditions. The forging process enhances grain structure, resulting in improved durability compared to cast alternatives.

The 58-tooth reluctor wheel is precisely machined and integrated to maintain factory ignition timing signals, ensuring seamless compatibility with existing engine management systems. The relubricated finish reduces initial friction and promotes longevity during the critical break-in period.

Manley’s commitment to quality includes strict dimensional control and dynamic balancing, which helps minimize engine vibrations and contributes to smoother operation and extended component life.

Installation & Fitment:

This crankshaft is designed as a direct replacement for compatible Chrysler and Dodge HEMI V8 engines, specifically 5.7L and 6.1L variants. It fits using factory mounting points and interfaces with standard connecting rods and bearings for these engines.

No modifications such as cutting, drilling, or special tuning are required for installation when used in appropriate engine builds. Professional installation is recommended to ensure proper clearances and torque specifications are met.

• Direct bolt-in replacement for 5.7L and 6.1L HEMI engines.
• Compatible with factory and aftermarket components designed for the -4.050" stroke.
• No special machining or modifications necessary.

What’s Included

• Manley forged crankshaft with -4.050" stroke
• Integrated 58-tooth reluctor wheel
• Relubricated finish for break-in protection

Ideal For:

This crankshaft is ideal for enthusiasts and engine builders who are upgrading or rebuilding Chrysler and Dodge HEMI V8 engines for increased displacement and performance. It suits:

• Street performance vehicles seeking enhanced torque and reliability.
• Race and track applications requiring durable rotating assemblies.
• Engine rebuilds aiming to restore or improve factory specifications.
• Builders upgrading to stroker configurations within the HEMI platform.

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.