Callies Compstar 4340 Forged Crankshaft 3.875" Stroke — Small Block Chevy

SKU: GBTB_SAM-113-CS
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Ultimate Displacement with Callies Compstar 3.875" Stroke CrankshaftPush the limits ...Read More

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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

Ultimate Displacement with Callies Compstar 3.875" Stroke Crankshaft

Push the limits of your Small Block Chevy engine with the Callies Compstar 4340 Forged Crankshaft, featuring an aggressive 3.875-inch stroke. This crankshaft is engineered for builders aiming for maximum displacement and unparalleled torque production, making it ideal for serious competition and extreme street performance applications. It provides the foundation for creating a truly dominant SBC powerplant.

Premium 4340 Forged Steel for Strength

Constructed from top-tier 4340 forged steel, this Compstar crankshaft offers exceptional strength and resilience against the most punishing engine conditions. The forging process ensures a superior internal grain structure, providing maximum resistance to stress and fatigue. Designed for internal balancing, it contributes to a highly stable and vibration-free rotating assembly, essential for longevity and peak performance in high-revving engines.

  • Material: 4340 Forged Steel
  • Stroke: 3.875 inches
  • Balance: Internal
  • Seal Type: 2-Piece Rear Main Seal
  • Application: Small Block Chevy
  • Weight: Standard Compstar Design

Race-Proven Durability and Precision

Callies Compstar crankshafts are trusted by professional engine builders for their unwavering quality and precision. Each crankshaft is meticulously machined to exacting specifications, guaranteeing optimal bearing clearances and seamless integration into your engine block. The reliable 2-piece rear main seal design ensures a leak-free operation, vital for maintaining consistent oil pressure under extreme loads. Choose Callies for a crankshaft that delivers the ultimate in performance, durability, and peace of mind for your most ambitious Small Block Chevy build.

Product Details

Product Description
Part Numbers
Sizing & Fit

Ultimate Displacement with Callies Compstar 3.875" Stroke Crankshaft

Push the limits of your Small Block Chevy engine with the Callies Compstar 4340 Forged Crankshaft, featuring an aggressive 3.875-inch stroke. This crankshaft is engineered for builders aiming for maximum displacement and unparalleled torque production, making it ideal for serious competition and extreme street performance applications. It provides the foundation for creating a truly dominant SBC powerplant.

Premium 4340 Forged Steel for Strength

Constructed from top-tier 4340 forged steel, this Compstar crankshaft offers exceptional strength and resilience against the most punishing engine conditions. The forging process ensures a superior internal grain structure, providing maximum resistance to stress and fatigue. Designed for internal balancing, it contributes to a highly stable and vibration-free rotating assembly, essential for longevity and peak performance in high-revving engines.

  • Material: 4340 Forged Steel
  • Stroke: 3.875 inches
  • Balance: Internal
  • Seal Type: 2-Piece Rear Main Seal
  • Application: Small Block Chevy
  • Weight: Standard Compstar Design

Race-Proven Durability and Precision

Callies Compstar crankshafts are trusted by professional engine builders for their unwavering quality and precision. Each crankshaft is meticulously machined to exacting specifications, guaranteeing optimal bearing clearances and seamless integration into your engine block. The reliable 2-piece rear main seal design ensures a leak-free operation, vital for maintaining consistent oil pressure under extreme loads. Choose Callies for a crankshaft that delivers the ultimate in performance, durability, and peace of mind for your most ambitious Small Block Chevy build.

Product Details

Product Description

Ultimate Displacement with Callies Compstar 3.875" Stroke Crankshaft

Push the limits of your Small Block Chevy engine with the Callies Compstar 4340 Forged Crankshaft, featuring an aggressive 3.875-inch stroke. This crankshaft is engineered for builders aiming for maximum displacement and unparalleled torque production, making it ideal for serious competition and extreme street performance applications. It provides the foundation for creating a truly dominant SBC powerplant.

Premium 4340 Forged Steel for Strength

Constructed from top-tier 4340 forged steel, this Compstar crankshaft offers exceptional strength and resilience against the most punishing engine conditions. The forging process ensures a superior internal grain structure, providing maximum resistance to stress and fatigue. Designed for internal balancing, it contributes to a highly stable and vibration-free rotating assembly, essential for longevity and peak performance in high-revving engines.

  • Material: 4340 Forged Steel
  • Stroke: 3.875 inches
  • Balance: Internal
  • Seal Type: 2-Piece Rear Main Seal
  • Application: Small Block Chevy
  • Weight: Standard Compstar Design

Race-Proven Durability and Precision

Callies Compstar crankshafts are trusted by professional engine builders for their unwavering quality and precision. Each crankshaft is meticulously machined to exacting specifications, guaranteeing optimal bearing clearances and seamless integration into your engine block. The reliable 2-piece rear main seal design ensures a leak-free operation, vital for maintaining consistent oil pressure under extreme loads. Choose Callies for a crankshaft that delivers the ultimate in performance, durability, and peace of mind for your most ambitious Small Block Chevy build.

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