What material is this crankshaft made from and why is it important?

This crankshaft is forged from 4340 alloy steel, a strong and durable material commonly used in high-performance engine components. It's further enhanced with heat treatment and nitriding to ensure it can withstand the stresses of a performance LS engine.

What does the 4.100-inch stroke mean for my engine?

A 4.100-inch stroke, compared to a stock stroke, generally increases the engine's displacement. This can lead to more torque and horsepower potential, especially when paired with other performance modifications.

What quality control steps does Manley perform on this crankshaft?

Manley ensures quality through a multi-step process including stress relief, shot peening to improve fatigue life, and 100% magnafluxing to detect any internal flaws before shipping.

Specifications

Brand: Manley Performance
Part #: 190158NB
UPC: 807298114651

Manley Chevrolet LS Forged Crankshaft - 4.100in Stroke

Name: Manley Chevrolet LS Forged Crankshaft - 4.100in Stroke
Brand: Manley Performance
SKU: manley-performance-manley-chevrolet-ls-forged-crankshaft-4-100in-stroke-t14-881333
Price: 1559.64 USD
Availability: BackOrder

$1559.64

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 LS Forged Crankshaft - 4.100in Stroke. This 4340 alloy steel crankshaft is built for durability and performance in your LS engine.

Key Features

Fits Chevrolet LS engines.
Features a 4.100-inch stroke for increased displacement.
Constructed from durable 4340 alloy steel.
Undergoes multi-step heat treatment and nitriding for enhanced strength.
Includes gun-drilled mains and lightened rod journals for weight reduction.
Counterweights are fully profiled for precise balance.

This crankshaft is designed for Chevrolet LS engine applications. Please consult with a professional or refer to manufacturer specifications to confirm compatibility with your specific engine build.

⚠️ 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 LS engine, a strong crankshaft is the heart of the operation. This Manley Performance Pro Series crankshaft is forged from 4340 alloy steel, a material known for its excellent strength and durability, making it a solid choice for demanding builds. With a 4.100-inch stroke, it's designed to increase displacement and potential power output for your LS engine.

Manley has put a lot of thought into making this crankshaft perform. The 4340 non-twist forged material is enhanced with a multi-step heat treatment and nitriding process to further boost its strength and ensure it holds up over time. They've also focused on reducing weight where possible without sacrificing integrity; the mains are gun-drilled and the rod journals are lightened, which helps optimize overall engine performance. The counterweights are carefully profiled for precise balance, which is crucial for smooth operation at high RPMs. Plus, the large radius journals are micro-polished to cut down on friction, helping to unlock more of the engine's potential.

Before this crankshaft leaves Manley, it goes through a rigorous quality assurance process. This includes stress relief, shot peening for fatigue resistance, and 100% magnafluxing to catch any potential flaws. This attention to detail means you're getting a well-built component ready for your custom LS build. Keep in mind that for a build of this caliber, you'll want to ensure you have all the necessary supporting components, such as appropriate pistons, connecting rods, and balancing services, to match the crankshaft's specifications.