Eagle Forged Crankshaft 4340 Steel 4.000 Stroke — Fits GM LS1 LS-Series

SKU: BBPG_434640006100
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Car Wheel Size Chart

Wheel Diameter (inches) Tire Width (mm) Aspect Ratio Rim Width (inches)
14185655.5
15195606.0
16205556.5
17215507.0
18225457.5
19235408.0
20245358.5

Note: Wheel and tire sizes vary by car make and model. Always consult your vehicle’s manufacturer for exact specifications.

How to Read Tire Size

Example: 225/45R17 means:

  • 225 = Tire width in mm
  • 45 = Aspect ratio (height as % of width)
  • R17 = Rim diameter in inches

Product Details

Product Description
Part Numbers
Sizing & Fit

About Eagle

Eagle engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Eagle lineup with fast shipping and expert fitment support — order with confidence.

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Forged Performance for GM LS Engines

Unlock the true potential of your GM LS-series engine with the Eagle 4340 forged steel crankshaft. Featuring a 4.000-inch stroke, this crank is designed to increase displacement and torque, providing a solid foundation for high-horsepower builds. Forged from 4340 steel, this crankshaft offers superior strength and durability compared to cast alternatives, making it perfect for forced induction or nitrous applications.

Technical Highlights

  • Material: 4340 Forged Steel
  • Stroke: 4.000 inches
  • Balance: Internal Balance
  • Seal Type: 1-Piece Rear Main Seal
  • Compatibility: GM LS-Series Engines
  • Construction: High-Strength Forging

This crankshaft is precision-machined to ensure perfect bearing clearances and smooth operation throughout the RPM range. The internal balance design reduces the need for heavy external counterweights, allowing for a more responsive and efficient rotating assembly. Whether you are building a street-strip machine or a dedicated track car, this Eagle forged crank provides the reliability you need to push your LS engine to the next level. Each unit is inspected to meet strict quality standards, ensuring a drop-in fit for your build. Experience the difference in engine performance with quality components from GGCRACING.

Product Details

Product Description
Part Numbers
Sizing & Fit

About Eagle

Eagle engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Eagle lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

Forged Performance for GM LS Engines

Unlock the true potential of your GM LS-series engine with the Eagle 4340 forged steel crankshaft. Featuring a 4.000-inch stroke, this crank is designed to increase displacement and torque, providing a solid foundation for high-horsepower builds. Forged from 4340 steel, this crankshaft offers superior strength and durability compared to cast alternatives, making it perfect for forced induction or nitrous applications.

Technical Highlights

  • Material: 4340 Forged Steel
  • Stroke: 4.000 inches
  • Balance: Internal Balance
  • Seal Type: 1-Piece Rear Main Seal
  • Compatibility: GM LS-Series Engines
  • Construction: High-Strength Forging

This crankshaft is precision-machined to ensure perfect bearing clearances and smooth operation throughout the RPM range. The internal balance design reduces the need for heavy external counterweights, allowing for a more responsive and efficient rotating assembly. Whether you are building a street-strip machine or a dedicated track car, this Eagle forged crank provides the reliability you need to push your LS engine to the next level. Each unit is inspected to meet strict quality standards, ensuring a drop-in fit for your build. Experience the difference in engine performance with quality components from GGCRACING.

Product Details

Product Description

About Eagle

Eagle engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Eagle lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

Forged Performance for GM LS Engines

Unlock the true potential of your GM LS-series engine with the Eagle 4340 forged steel crankshaft. Featuring a 4.000-inch stroke, this crank is designed to increase displacement and torque, providing a solid foundation for high-horsepower builds. Forged from 4340 steel, this crankshaft offers superior strength and durability compared to cast alternatives, making it perfect for forced induction or nitrous applications.

Technical Highlights

  • Material: 4340 Forged Steel
  • Stroke: 4.000 inches
  • Balance: Internal Balance
  • Seal Type: 1-Piece Rear Main Seal
  • Compatibility: GM LS-Series Engines
  • Construction: High-Strength Forging

This crankshaft is precision-machined to ensure perfect bearing clearances and smooth operation throughout the RPM range. The internal balance design reduces the need for heavy external counterweights, allowing for a more responsive and efficient rotating assembly. Whether you are building a street-strip machine or a dedicated track car, this Eagle forged crank provides the reliability you need to push your LS engine to the next level. Each unit is inspected to meet strict quality standards, ensuring a drop-in fit for your build. Experience the difference in engine performance with quality components from GGCRACING.

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