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

SKU: BJJD_3101-170/170
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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.

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Professional Valvetrain for Big Block Chevy

Upgrade your Big Block Chevy with the T&D Machine Shaft Rocker Arm Kit, specifically engineered for Dart Iron Eagle cylinder heads. When you are running a high-horsepower BBC, the valvetrain is the heart of your performance. This 1.70 ratio shaft-mount kit provides the rigidity and precision needed to keep your engine running smoothly under extreme loads, preventing the common issues of rocker stud flex and geometry misalignment.

Key Features for BBC Performance

  • Dart Iron Eagle Fitment: Custom-designed to align perfectly with the geometry of Dart Iron Eagle heads.
  • Shaft-Mount System: Provides superior structural support compared to traditional stud-mount rockers.
  • 1.70 Ratio Precision: Ensures consistent valve lift, maximizing the efficiency of your camshaft profile.
  • Full Roller Bearings: Reduces friction and heat, which is critical for long-duration high-RPM operation.
  • Robust Construction: High-strength aluminum bodies designed to withstand the immense pressures of a big block build.

This kit is the preferred choice for engine builders who demand reliability and consistency. By stabilizing the valvetrain, you ensure that your engine maintains its power curve and avoids potential failures during high-stress conditions. The natural finish provides a classic look that complements any serious engine build. When you need the best for your Big Block Chevy, turn to T&D Machine for unmatched quality. Explore our selection of high-performance engine parts and upgrades 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

Professional Valvetrain for Big Block Chevy

Upgrade your Big Block Chevy with the T&D Machine Shaft Rocker Arm Kit, specifically engineered for Dart Iron Eagle cylinder heads. When you are running a high-horsepower BBC, the valvetrain is the heart of your performance. This 1.70 ratio shaft-mount kit provides the rigidity and precision needed to keep your engine running smoothly under extreme loads, preventing the common issues of rocker stud flex and geometry misalignment.

Key Features for BBC Performance

  • Dart Iron Eagle Fitment: Custom-designed to align perfectly with the geometry of Dart Iron Eagle heads.
  • Shaft-Mount System: Provides superior structural support compared to traditional stud-mount rockers.
  • 1.70 Ratio Precision: Ensures consistent valve lift, maximizing the efficiency of your camshaft profile.
  • Full Roller Bearings: Reduces friction and heat, which is critical for long-duration high-RPM operation.
  • Robust Construction: High-strength aluminum bodies designed to withstand the immense pressures of a big block build.

This kit is the preferred choice for engine builders who demand reliability and consistency. By stabilizing the valvetrain, you ensure that your engine maintains its power curve and avoids potential failures during high-stress conditions. The natural finish provides a classic look that complements any serious engine build. When you need the best for your Big Block Chevy, turn to T&D Machine for unmatched quality. Explore our selection of high-performance engine parts and upgrades 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

Professional Valvetrain for Big Block Chevy

Upgrade your Big Block Chevy with the T&D Machine Shaft Rocker Arm Kit, specifically engineered for Dart Iron Eagle cylinder heads. When you are running a high-horsepower BBC, the valvetrain is the heart of your performance. This 1.70 ratio shaft-mount kit provides the rigidity and precision needed to keep your engine running smoothly under extreme loads, preventing the common issues of rocker stud flex and geometry misalignment.

Key Features for BBC Performance

  • Dart Iron Eagle Fitment: Custom-designed to align perfectly with the geometry of Dart Iron Eagle heads.
  • Shaft-Mount System: Provides superior structural support compared to traditional stud-mount rockers.
  • 1.70 Ratio Precision: Ensures consistent valve lift, maximizing the efficiency of your camshaft profile.
  • Full Roller Bearings: Reduces friction and heat, which is critical for long-duration high-RPM operation.
  • Robust Construction: High-strength aluminum bodies designed to withstand the immense pressures of a big block build.

This kit is the preferred choice for engine builders who demand reliability and consistency. By stabilizing the valvetrain, you ensure that your engine maintains its power curve and avoids potential failures during high-stress conditions. The natural finish provides a classic look that complements any serious engine build. When you need the best for your Big Block Chevy, turn to T&D Machine for unmatched quality. Explore our selection of high-performance engine parts and upgrades at GGCRACING.

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