Engines and Components› Crankshafts and Components

Eagle Specialty Products

3.500" Stroke Forged 4340 Steel Crankshaft

$949.82

SKU: EAG4350350057LA

In Stock
In Stock
Ships by Sep 9
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$100 Minimum Order
30 Days Return
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Overview

The Eagle EAG4350350057LA is a lightweight crankshaft designed for Chevrolet 305 and 350 engines. It features a 3.500-inch stroke and is constructed from forged 4340 steel.

This crankshaft is nitrided and micropolished, with .125" fillet radiuses for superior strength, requiring chamfered or narrowed bearings. It is intended for restricted-class competition use.
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The Eagle EAG4350350057LA is a lightweight crankshaft engineered for Chevrolet 305 and 350 engines. Constructed from forged 4340 steel, this crankshaft boasts a 3.500-inch stroke and a non-twist forging process. Its design incorporates lightweight counterweights to reduce rotating mass, contributing to improved engine performance. This component features .125" fillet radiuses for enhanced strength, necessitating the use of chamfered or narrowed bearings. The crankshaft undergoes a nitriding surface treatment and micropolishing for durability. It is specifically intended for use in restricted-class competition applications. Eagle Specialty Products emphasizes quality by using only certified steel in their crankshaft production. Rigorous testing methods, including multi-stage heat treating, sonic testing, magna-fluxing, and X-ray inspection, are employed to ensure product reliability. It is important to note that this item is not intended for use in pollution-controlled vehicles. Additionally, all parts are special order from the manufacturer. Potential buyers concerned about delivery time should contact the seller for stock status before purchasing to avoid special order cancellation fees.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandEagle Specialty Products
Part NumberEAG4350350057LA
CategoryEngines and Components

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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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