What is the primary benefit of the 4.050" stroke on this crankshaft?

The 4.050 inch stroke significantly increases the engine's displacement. For a 5.7L Hemi, this can turn it into a 392 cubic inch engine, and for a 6.1L or 6.4L Hemi, it can become a 426 cubic inch engine, leading to substantial power gains.

What makes this crankshaft suitable for high-performance applications?

It's forged from 4340 alloy steel, a strong material for demanding builds. It also features multi-step heat treatment, nitriding for surface hardness, micro-polished journals for reduced friction, and balanced counterweights for stability.

What kind of quality assurance does Manley perform on these crankshafts?

Each crankshaft undergoes stress relief, shot peening, and 100% magnafluxing. This rigorous process ensures the crankshaft meets Manley's stringent quality standards for reliability and performance.

Specifications

Brand: Manley Performance
Part #: 191958NB
UPC: 807298114712

Manley Chrysler 5.7L Hemi Forged Crankshaft - 4.050in Stroke

Name: Manley Chrysler 5.7L Hemi Forged Crankshaft - 4.050in Stroke
Brand: Manley Performance
SKU: manley-performance-manley-chrysler-5-7l-hemi-forged-crankshaft-4-050in-stroke-t14-880862
Price: 1663.36 USD
Availability: InStock

$1663.36

Only 1 left in stock

Manley Chrysler 5.7L Hemi Forged Crankshaft - 4.050in Stroke. This forged crankshaft is built for increased displacement and durability in high-performance Hemi engines.

Key Features

Fits Chrysler 5.7L Hemi engines.
Features a 4.050 inch stroke, increasing displacement to approximately 392 cubic inches.
Manufactured from a strong 4340 alloy steel forging for enhanced durability.
Undergoes multi-step heat treatment and nitriding for improved strength and longevity.
Gun drilled mains and lightened rod journals contribute to weight reduction.
Fully profiled counterweights ensure precise balance and stability.

This crankshaft is designed for Chrysler 5.7L Hemi engines. Consult manufacturer specifications for compatibility with specific engine builds and displacement conversions.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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About this part

Product Details

If you're looking to build a serious Hemi engine, a strong crankshaft is the foundation. This Manley Pro Series crankshaft is designed for Chrysler 5.7L Hemi engines, offering a significant upgrade in both strength and displacement potential. By increasing the stroke to 4.050 inches, it can transform a 5.7L Hemi into a 392 cubic inch powerhouse, or even a 6.1L/6.4L into a 426 cubic inch monster.

This crankshaft is forged from 4340 alloy steel, a well-known material for its toughness and reliability in performance applications. Manley has further enhanced its durability with a multi-step heat treatment process and nitriding, which hardens the surface to resist wear and fatigue. To optimize performance and reduce friction, the journals are micro-polished to a smooth finish, and the counterweights are carefully profiled and balanced for stability. Gun drilling in the mains and lightened rod journals also contribute to a lighter overall assembly, which can improve engine response.

Manley puts each of these crankshafts through rigorous quality checks, including stress relief, shot peening, and 100% magnafluxing, to ensure they meet their strict standards. Building a Hemi engine is a significant undertaking, and starting with a well-built crankshaft like this Manley Pro Series unit sets you up for success. You'll want to ensure you have all the necessary supporting components, such as bearings, pistons, and connecting rods, that are compatible with the increased stroke and intended power level.