What is the benefit of a 'stroker' crankshaft?

A stroker crankshaft, like this Manley Pro Series model, has a longer stroke than a stock crankshaft. This increased stroke effectively increases the engine's displacement, which generally leads to more power and torque output.

What does the 4340 alloy steel material mean for this crankshaft?

Forging from 4340 alloy steel makes this crankshaft exceptionally strong and durable. It's a material well-suited to withstand the high stresses and demands of performance Hemi engines.

What is included with this crankshaft?

This listing is for the Manley Pro Series crankshaft itself. It does not include bearings, seals, or other installation hardware, which are typically purchased separately.

Specifications

Brand: Manley Performance
Part #: 192058
UPC: 807298091631

Manley Chrysler Hemi 5.7/6.4L 4.080in Stroke Crankshaft

Name: Manley Chrysler Hemi 5.7/6.4L 4.080in Stroke Crankshaft
Brand: Manley Performance
SKU: manley-performance-manley-chrysler-hemi-5-7-6-4l-4-080in-stroke-crankshaft-t14-28622
Price: 1606.66 USD
Availability: BackOrder

$1606.66

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Manley Pro Series 4340 steel crankshaft for Chrysler Hemi 5.7L/6.4L. Stroker crankshaft increases displacement.

Key Features

This crankshaft fits Chrysler Hemi 5.7L and 6.4L engines.
It is forged from 4340 alloy steel for enhanced strength and durability.
Features a 4.080-inch stroke, increasing engine displacement.
Gun drilled mains and lightened rod journals contribute to weight reduction.
Counterweights are fully profiled for precise engine balance.
Undergoes multi-step heat treatment and nitriding for improved strength and longevity.

This crankshaft is designed for Chrysler Hemi 5.7L and 6.4L engines. Please verify compatibility with your specific engine application.

⚠️ 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

This Manley Pro Series crankshaft is forged from 4340 alloy steel, a strong material chosen for its ability to handle the stresses of high-performance Hemi engines. It features a 4.080-inch stroke, which is a key detail for anyone looking to increase their engine's displacement. For example, installing this crank can turn a 5.7L Hemi into a 392 cubic inch engine, or a 6.1L/6.4L Hemi into a 426 cubic inch engine, significantly boosting its potential power and torque.

Beyond the increased displacement, Manley has incorporated several features to optimize performance and durability. The crankshaft is gun drilled and has lightened rod journals, which reduces overall weight and helps the engine rev more freely. The counterweights are carefully profiled for precise balancing, ensuring smooth operation even at high RPMs. To further enhance its strength and lifespan, the crankshaft undergoes a multi-step heat treatment process and nitriding. The journals are also micro-polished with large radii, which helps reduce friction and improve oil flow, contributing to better performance and longevity.

Manley puts each crankshaft through rigorous quality checks. This includes stress relief, shot peening for surface hardening, and 100% magnafluxing to detect any potential flaws. This attention to detail means you're getting a well-built component ready for demanding builds. If you're rebuilding your Hemi top end and aiming for more cubic inches and power, this stroker crankshaft is a solid option to consider.