Eagle 4340 Forged Crankshaft 4.250 Stroke — Fits Big Block Chevy

SKU: BBPG_445442526385
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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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Eagle 4340 Forged Crankshaft for Big Block Chevy

Transform your Big Block Chevy into a high-torque powerhouse with the Eagle 4340 Forged Crankshaft. Featuring a 4.250-inch stroke, this crankshaft is designed to provide the displacement increase and structural rigidity necessary for serious performance builds. Manufactured from high-strength 4340 forged steel, this unit is engineered to handle the massive torque loads typical of high-performance BBC applications.

Technical Specifications & Benefits

  • Stroke: 4.250 inches
  • Material: 4340 Forged Steel
  • Balance: Internal Balance
  • Seal Style: 2-Piece Rear Main Seal
  • Application: Big Block Chevy (BBC)
  • Durability: Shot-peened and stress-relieved

This crankshaft is the cornerstone of a reliable rotating assembly. By opting for a forged unit, you significantly reduce the risk of failure compared to cast or nodular iron components. The internal balance design allows for smoother operation throughout the entire RPM range, reducing vibration and protecting your engine bearings. Whether you are building a bracket racer or a high-horsepower street machine, the Eagle 4340 forged crank offers the precision and strength you need to compete with confidence. Upgrade your engine's foundation today with premium parts 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

Eagle 4340 Forged Crankshaft for Big Block Chevy

Transform your Big Block Chevy into a high-torque powerhouse with the Eagle 4340 Forged Crankshaft. Featuring a 4.250-inch stroke, this crankshaft is designed to provide the displacement increase and structural rigidity necessary for serious performance builds. Manufactured from high-strength 4340 forged steel, this unit is engineered to handle the massive torque loads typical of high-performance BBC applications.

Technical Specifications & Benefits

  • Stroke: 4.250 inches
  • Material: 4340 Forged Steel
  • Balance: Internal Balance
  • Seal Style: 2-Piece Rear Main Seal
  • Application: Big Block Chevy (BBC)
  • Durability: Shot-peened and stress-relieved

This crankshaft is the cornerstone of a reliable rotating assembly. By opting for a forged unit, you significantly reduce the risk of failure compared to cast or nodular iron components. The internal balance design allows for smoother operation throughout the entire RPM range, reducing vibration and protecting your engine bearings. Whether you are building a bracket racer or a high-horsepower street machine, the Eagle 4340 forged crank offers the precision and strength you need to compete with confidence. Upgrade your engine's foundation today with premium parts 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

Eagle 4340 Forged Crankshaft for Big Block Chevy

Transform your Big Block Chevy into a high-torque powerhouse with the Eagle 4340 Forged Crankshaft. Featuring a 4.250-inch stroke, this crankshaft is designed to provide the displacement increase and structural rigidity necessary for serious performance builds. Manufactured from high-strength 4340 forged steel, this unit is engineered to handle the massive torque loads typical of high-performance BBC applications.

Technical Specifications & Benefits

  • Stroke: 4.250 inches
  • Material: 4340 Forged Steel
  • Balance: Internal Balance
  • Seal Style: 2-Piece Rear Main Seal
  • Application: Big Block Chevy (BBC)
  • Durability: Shot-peened and stress-relieved

This crankshaft is the cornerstone of a reliable rotating assembly. By opting for a forged unit, you significantly reduce the risk of failure compared to cast or nodular iron components. The internal balance design allows for smoother operation throughout the entire RPM range, reducing vibration and protecting your engine bearings. Whether you are building a bracket racer or a high-horsepower street machine, the Eagle 4340 forged crank offers the precision and strength you need to compete with confidence. Upgrade your engine's foundation today with premium parts from GGCRACING.

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