What material is this crankshaft made from?

This Manley Pro Series crankshaft is forged from 4340 alloy steel. This material is chosen for its strength and durability, especially in high-performance applications.

What does the nitriding process do for the crankshaft?

Nitriding is a surface hardening heat treatment that significantly increases the wear resistance and fatigue strength of the crankshaft. This helps it withstand the stresses of engine operation over time.

Does this crankshaft come with bearings?

This crankshaft is sold individually and does not include bearings. You will need to source compatible main and rod bearings separately for your engine build.

Specifications

Brand: Manley Performance
Part #: 190480NB
UPC: 807298114682

Manley Chevrolet Small Block Forged Crankshaft - 3.875in Stroke

Name: Manley Chevrolet Small Block Forged Crankshaft - 3.875in Stroke
Brand: Manley Performance
SKU: manley-performance-manley-chevrolet-small-block-forged-crankshaft-3-875in-stroke-t14-880845
Price: 1144.28 USD
Availability: BackOrder

$1144.28

On Backorder

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

Manley Chevrolet Small Block Forged Crankshaft - 3.875in Stroke. Built for durability and performance with a 4340 non-twist forging.

Key Features

Fits Chevrolet Small Block engines with a 3.875-inch stroke.
Constructed from a 4340 alloy steel non-twist forging for strength and reduced weight.
Features a multi-step heat treatment and nitriding process for enhanced durability and wear resistance.
Micro-polished journals with large radii help reduce friction and improve oil flow.
Each crankshaft is shot peened and 100% magnafluxed to ensure structural integrity.
Manley Performance is a well-known name in high-performance engine components.

This crankshaft is designed for Chevrolet Small Block engines with a 3.875-inch stroke. Always confirm compatibility with your specific engine build and supporting components.

⚠️ 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 is the Manley Performance Pro Series crankshaft, built for Chevrolet Small Block engines with a 3.875-inch stroke. If you're rebuilding the heart of your engine, a strong, well-made crankshaft is absolutely essential for reliable power and longevity. This piece is designed to handle the demands of performance builds, offering a solid foundation for your engine's rotating assembly.

Manley starts with a 4340 alloy steel non-twist forging, which is inherently strong and helps keep the overall weight down compared to less advanced designs. After forging, it goes through a multi-step heat treatment process and is nitrided. This treatment process significantly increases the surface hardness and overall strength of the crankshaft, making it more resistant to wear and fatigue. The main and rod journals are also micro-polished with large radii, which reduces friction during operation and contributes to better oil flow and overall engine efficiency. Each crankshaft is also shot peened and 100% magnafluxed to ensure there are no hidden flaws before it leaves the factory.

When you're putting together a performance engine, the crankshaft is one of the most critical components. This Manley Pro Series crankshaft is a well-built option that's ready for serious work. Make sure you have all the necessary supporting components, like bearings and pistons, that are compatible with a 3.875-inch stroke before you begin assembly.