What material is this crankshaft made from?

This crankshaft is forged from 4340 alloy steel, a strong and durable material commonly used in high-performance engine components.

What is the purpose of micro-polishing the journals?

Micro-polishing the journals helps to reduce friction within the engine. This can lead to improved performance and longevity of the crankshaft and its bearings.

What quality control steps does Manley perform on these crankshafts?

Each crankshaft undergoes stress relief, shot peening, and 100% magnafluxing. These processes ensure the crankshaft meets stringent quality standards and is free from defects.

Specifications

Brand: Manley Performance
Part #: 190400
UPC: 807298093260

Manley Chevrolet Big Block Forged Crankshaft - 4.625in Stroke

Name: Manley Chevrolet Big Block Forged Crankshaft - 4.625in Stroke
Brand: Manley Performance
SKU: manley-performance-manley-chevrolet-big-block-forged-crankshaft-4-625in-stroke-t14-880852
Price: 1449.42 USD
Availability: BackOrder

$1449.42

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 Big Block Forged Crankshaft - 4.625in Stroke. A strong, durable crankshaft for serious engine builds.

Key Features

Fits Chevrolet Big Block engines.
Features a 4.625-inch stroke for increased displacement and power.
Constructed from a 4340 non-twist forging for durability.
Undergoes multi-step heat treatment and nitriding for enhanced strength.
Large radius journals are micro-polished to reduce friction.
Each crankshaft is stress relieved, shot peened, and 100% magnafluxed for quality assurance.

⚠️ 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 Chevrolet Big Block engine and need a solid foundation, a strong crankshaft is where you start. This Manley Performance Pro Series crankshaft is forged from 4340 alloy steel, a material known for its excellent strength and durability, making it a reliable choice for demanding builds. It features a 4.625-inch stroke, which is a common choice for increasing displacement and power in these engines.

Manley puts these crankshafts through a multi-step heat treatment process and nitriding to further enhance their strength and ensure they hold up over time. The journals are large radius and micro-polished, which helps reduce friction and improve overall engine performance. Every crankshaft also undergoes stress relief, shot peening, and 100% magnafluxing to meet Manley's strict quality standards, so you can be confident in its integrity.

This crankshaft is a key component for anyone looking to get the most out of their Chevrolet Big Block. It's a well-built piece designed to handle the stresses of performance applications.