What material is this crankshaft made from?

This crankshaft is forged from 4340 alloy steel. This material is known for its strength and durability, making it suitable for high-performance applications.

What is the purpose of the micro-polished journals?

The micro-polished journals, along with large radii, are designed to reduce friction within the engine. This can lead to improved performance and potentially longer engine life.

What quality assurance steps does Manley perform on these crankshafts?

Manley performs several quality assurance steps, including stress relief, shot peening, and 100% magnafluxing. These processes ensure the crankshaft meets their stringent quality standards before it leaves the factory.

Specifications

Brand: Manley Performance
Part #: 190290
UPC: 807298081472

Manley Chevrolet Big Block 454 Non-Twist Forgings 4.250in Stroke Crankshaft

Name: Manley Chevrolet Big Block 454 Non-Twist Forgings 4.250in Stroke Crankshaft
Brand: Manley Performance
SKU: manley-performance-manley-chevrolet-big-block-454-non-twist-forgings-4-250in-str-t14-135618
Price: 1400.00 USD
Availability: BackOrder

$1400.00

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 454 Non-Twist Forgings 4.250in Stroke Crankshaft. A strong, durable crankshaft for your performance build.

Key Features

Fits Chevrolet Big Block 454 engines.
Features a 4.250 inch stroke for increased displacement.
Constructed from a 4340 alloy steel non-twist forging for durability.
Undergoes multi-step heat treatment and nitriding for enhanced strength.
Micro-polished journals with large radii reduce friction.
Each crankshaft is stress relieved, shot peened, and 100% magnafluxed.

⚠️ 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 454 engine, a strong crankshaft is the heart of the operation. This Manley Pro Series crankshaft is forged from 4340 alloy steel, designed to handle the demands of a performance build. It features a 4.250-inch stroke, giving you more displacement and potential power from your engine.

Manley uses a non-twist forging process for this crankshaft, which helps ensure it stays true under stress. To further enhance its durability and longevity, it goes through a multi-step heat treatment and nitriding process. The journals are micro-polished with large radii, which helps reduce friction and improve overall engine performance. Each crankshaft is also stress relieved, shot peened, and 100% magnafluxed to meet Manley's strict quality standards, so you know you're getting a well-built component.

This crankshaft is a solid choice for anyone looking to rebuild or upgrade their Chevrolet Big Block 454. It's designed for performance and built to last.