Manley Performance Chrysler 5.7L/6.1L Crankshaft - 4.050 Hemi 32T RELU

Fits Chrysler 5.7L and 6.1L HEMI V8 Engines

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Overview:

The Manley Performance Chrysler 5.7L/6.1L Crankshaft is a precision-engineered replacement crankshaft designed specifically for Chrysler HEMI V8 engines with 4.050" bore spacing and a 32-tooth reluctor wheel. This crankshaft is ideal for enthusiasts and professional builders looking to upgrade or rebuild their 5.7L or 6.1L HEMI engines with a durable, high-quality rotating assembly component.

Whether you are restoring a classic muscle car, building a high-performance street engine, or assembling a race-ready powerplant, this crankshaft provides the reliability and strength needed to handle increased power and torque demands. Manley’s reputation for quality ensures that you’ll get a component that meets or exceeds OEM standards for fitment and durability.

Key Features:

This crankshaft offers a range of features designed to enhance engine performance and longevity:

• Manufactured from premium forged steel for superior strength and fatigue resistance.
• Precision machined to exact OEM specifications for perfect fitment in Chrysler 5.7L and 6.1L HEMI engines.
• 4.050" stroke dimension optimized for these engine platforms, ensuring proper piston travel and compression ratios.
• 32-tooth reluctor wheel (RELU) integrated for compatibility with factory ignition and timing systems.
• Balanced and stress-relieved to reduce vibration and improve engine smoothness at high RPM.
• Designed to support increased horsepower and torque for performance builds.
• Compatible with factory bearings and seals for straightforward installation.
• Ideal for rebuilds, upgrades, and custom engine projects requiring a reliable rotating assembly component.

Construction & Design:

Manley Performance crankshafts are crafted using advanced forging techniques that enhance the metal grain structure, resulting in improved toughness and resistance to cracking under high stress. The crankshaft undergoes precision CNC machining to ensure all journals, keyways, and reluctor wheel teeth meet strict tolerances for seamless integration with your engine’s components.

The 32-tooth reluctor wheel is carefully incorporated to maintain accurate engine timing signals, preserving compatibility with factory ignition and engine management systems. This design choice eliminates the need for aftermarket sensors or modifications, simplifying installation and maintaining OEM functionality.

Installation & Fitment:

This crankshaft is a direct replacement for Chrysler 5.7L and 6.1L HEMI engines, designed to fit without modification. It uses factory mounting points and is compatible with OEM bearings and seals, making installation straightforward for experienced engine builders and professional shops.

No cutting, drilling, or special tuning is required when installing this crankshaft, allowing you to maintain factory engine management and ignition timing systems without additional adjustments.

• Direct bolt-in replacement for Chrysler 5.7L and 6.1L HEMI engines
• Compatible with factory bearings, seals, and ignition components
• No modifications or special tuning necessary

What’s Included

• Manley Performance forged steel crankshaft with 4.050" stroke
• Integrated 32-tooth reluctor wheel (RELU)
• Packaging designed to protect the crankshaft during shipping

Ideal For:

This crankshaft is perfect for:

• Performance enthusiasts rebuilding or upgrading Chrysler 5.7L and 6.1L HEMI engines
• Engine builders seeking a durable, high-quality rotating assembly component
• Restorations requiring OEM-spec crankshafts with modern manufacturing quality
• Street, strip, and mild race applications where reliability and strength are critical

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.