Auto Barn
Est. 1957
Eagle

Eagle Chevrolet 350 LW 3.480in Stroke Forged 4340 Lightweight Steel Crankshaft

$1081.22

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Eagle Chevrolet 350 LW 3.480in Stroke Forged 4340 Lightweight Steel Crankshaft. Reduces rotating weight for competition.

Key Features

  • Forged 4340 lightweight steel construction for strength and reduced rotating weight.
  • Non-twist forging process ensures structural integrity.
  • Lightweight counterweight design reduces overall rotating mass.
  • .125" fillet radii allow for chamfered or narrowed bearings, increasing strength.
  • Nitrided surface treatment enhances wear resistance and durability.
  • Micropolished finish ensures a smooth surface for optimal bearing performance.
This crankshaft is designed for Chevrolet 305/350 engines, commonly found in Chevy vehicles. Always 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

Starting with a non-twist forging of 4340 steel, this Eagle crankshaft is built for serious performance applications. Its lightweight counterweight design is specifically intended to reduce rotating mass, which can lead to improved engine response and overall performance in restricted-class competition. The .125" fillet radii are a notable design choice, offering superior strength by allowing for chamfered or narrowed bearings, which are required for proper fitment. This attention to detail in the design helps ensure the crankshaft can handle the demands of high-performance engines.

Beyond the robust forging and strategic lightening, this crankshaft also features a nitrided surface treatment and is micropolished. The nitride treatment hardens the surface, increasing wear resistance and durability, while the micropolishing ensures a smooth finish critical for bearing longevity and reducing friction. Because this crankshaft is designed to be lightweight, it's important to note that lightweight rods and pistons are required for ease in balancing the rotating assembly. This component is intended for competition use where every ounce of weight savings and every bit of strength matters.

Specifications

Brand
Eagle
Manufacturer Part #
4350348057LW
UPC
793348008608

Frequently Asked Questions

Eagle Chevrolet 350 LW 3.480in Stroke Forged 4340 Lightweight Steel Crankshaft

$1081.22