T&D Machine BBC Shaft Rocker Arm Kit 1.70/1.70 Ratio — Fits Big Block Chevy

SKU: BJJD_3148-1.70/1.70
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About T&D Machine T&D Machine engineers high-quality automotive parts and ...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

About T&D Machine

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

Watch in action

Precision Valvetrain Stability for BBC Engines

Experience unparalleled valvetrain stability with the T&D Machine BBC Shaft Rocker Arm Kit. Engineered for high-performance Big Block Chevy applications, these shaft-mount rockers eliminate the deflection common in stud-mount systems, ensuring consistent valve lift and timing at high RPMs. Each kit is precision-machined from high-strength aluminum, providing a lightweight yet incredibly durable solution for your racing engine.

Key Features and Benefits

  • 1.70/1.70 Ratio: Optimized geometry for precise valve actuation.
  • Full Roller Design: Reduces friction and heat for extended component life.
  • Shaft Mount Architecture: Superior rigidity compared to standard stud-mount setups.
  • Natural Finish: High-quality aluminum construction for heat dissipation.
  • Direct Fit: Specifically engineered for Big Block Chevy cylinder head configurations.

Whether you are building a street strip monster or a dedicated track machine, these rockers provide the reliability needed to push your engine to the limit. The full roller tip minimizes side-loading on the valve stems, significantly reducing guide wear and maintaining perfect contact patterns throughout the entire lift cycle. Trust the engineering excellence of T&D Machine to bring professional-grade valvetrain control to your build. Find all your high-performance engine components at GGCRACING.

Product Details

Product Description
Part Numbers
Sizing & Fit

About T&D Machine

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

Watch in action

Precision Valvetrain Stability for BBC Engines

Experience unparalleled valvetrain stability with the T&D Machine BBC Shaft Rocker Arm Kit. Engineered for high-performance Big Block Chevy applications, these shaft-mount rockers eliminate the deflection common in stud-mount systems, ensuring consistent valve lift and timing at high RPMs. Each kit is precision-machined from high-strength aluminum, providing a lightweight yet incredibly durable solution for your racing engine.

Key Features and Benefits

  • 1.70/1.70 Ratio: Optimized geometry for precise valve actuation.
  • Full Roller Design: Reduces friction and heat for extended component life.
  • Shaft Mount Architecture: Superior rigidity compared to standard stud-mount setups.
  • Natural Finish: High-quality aluminum construction for heat dissipation.
  • Direct Fit: Specifically engineered for Big Block Chevy cylinder head configurations.

Whether you are building a street strip monster or a dedicated track machine, these rockers provide the reliability needed to push your engine to the limit. The full roller tip minimizes side-loading on the valve stems, significantly reducing guide wear and maintaining perfect contact patterns throughout the entire lift cycle. Trust the engineering excellence of T&D Machine to bring professional-grade valvetrain control to your build. Find all your high-performance engine components at GGCRACING.

Product Details

Product Description

About T&D Machine

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

Watch in action

Precision Valvetrain Stability for BBC Engines

Experience unparalleled valvetrain stability with the T&D Machine BBC Shaft Rocker Arm Kit. Engineered for high-performance Big Block Chevy applications, these shaft-mount rockers eliminate the deflection common in stud-mount systems, ensuring consistent valve lift and timing at high RPMs. Each kit is precision-machined from high-strength aluminum, providing a lightweight yet incredibly durable solution for your racing engine.

Key Features and Benefits

  • 1.70/1.70 Ratio: Optimized geometry for precise valve actuation.
  • Full Roller Design: Reduces friction and heat for extended component life.
  • Shaft Mount Architecture: Superior rigidity compared to standard stud-mount setups.
  • Natural Finish: High-quality aluminum construction for heat dissipation.
  • Direct Fit: Specifically engineered for Big Block Chevy cylinder head configurations.

Whether you are building a street strip monster or a dedicated track machine, these rockers provide the reliability needed to push your engine to the limit. The full roller tip minimizes side-loading on the valve stems, significantly reducing guide wear and maintaining perfect contact patterns throughout the entire lift cycle. Trust the engineering excellence of T&D Machine to bring professional-grade valvetrain control to your build. Find all your high-performance engine components at GGCRACING.

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