What is the benefit of a 4.050-inch stroke crankshaft?

A longer stroke crankshaft increases the engine's displacement. This means more air and fuel can be burned with each combustion cycle, leading to a significant increase in power and torque.

What does the 32-tooth reluctor wheel do?

The reluctor wheel is a critical component for your engine's computer (ECU). It has teeth that pass a sensor, allowing the ECU to accurately determine the crankshaft's rotational speed, which is essential for ignition timing and fuel delivery.

What is the advantage of a 4340 forged steel crankshaft over a cast one?

Forged crankshafts, like this one made from 4340 alloy steel, are significantly stronger and more durable than cast crankshafts. This makes them ideal for high-performance applications and engines with increased displacement or higher RPM limits.

Specifications

Brand: Manley Performance
Part #: 191832
UPC: 807298068428

Manley Chrysler 5.7L/6.1L Hemi 4340 Forged Crankshaft w/ 32 Tooth Reluctor Wheel

Name: Manley Chrysler 5.7L/6.1L Hemi 4340 Forged Crankshaft w/ 32 Tooth Reluctor Wheel
Brand: Manley Performance
SKU: manley-performance-manley-chrysler-5-7l-6-1l-hemi-4340-forged-crankshaft-w-32-to-t14-268166
Price: 1526.32 USD
Availability: InStock

$1526.32

Only 3 left in stock

Manley Chrysler 5.7L/6.1L Hemi 4340 Forged Crankshaft w/ 32 Tooth Reluctor Wheel. This crankshaft increases displacement for more power.

Key Features

Fits Chrysler 5.7L and 6.1L Hemi engines.
Forged from 4340 alloy steel for enhanced strength and longevity.
Features a 4.050-inch stroke, increasing displacement to 392 c.i. (5.7L) or 426 c.i. (6.1L/6.4L).
Gun drilled mains and lightened rod journals contribute to a lighter overall weight.
Counterweights are fully profiled for precise balance and stability.
Multi-step heat treatment and nitriding process improve strength.

This crankshaft is designed for Chrysler 5.7L and 6.1L Hemi 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

If you're building a high-performance Hemi engine, a strong crankshaft is the foundation. This Manley Pro Series crankshaft is forged from 4340 alloy steel, making it a well-built choice for turning your 5.7L or 6.1L Hemi into a larger displacement powerhouse. With a 4.050-inch stroke, it can transform a 5.7L into a 392 cubic inch engine, or a 6.1L/6.4L into a 426 cubic inch monster.

Manley puts this crankshaft through a multi-step heat treatment and nitriding process to significantly enhance its strength and ensure it holds up over time. The journals are micro-polished with large radii to reduce friction, which helps optimize performance. To further reduce weight and improve stability, the mains are gun drilled and the rod journals are lightened, with fully profiled counterweights for precise balance. Every crankshaft is also shot peened and 100% magnafluxed to meet strict quality standards, ensuring you're getting a solid component for your build.

This crankshaft comes equipped with a 32-tooth reluctor wheel, which is important for your engine's computer to accurately read engine speed. When you're aiming for significant displacement increases and the reliability to match, a forged crankshaft like this is a critical piece of the puzzle. Be sure to consult your engine build guide for all necessary components and assembly procedures.