T&D Machine SBC Shaft Rocker Arm Kit 1.65/1.60 Ratio — Fits Small Block Chevy 18 Degree Bowtie Heads

SKU: BJJD_2053-165/160
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Sale price$2,568.37
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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

High-Lift Performance for 18-Degree SBC Engines

Unlock more power from your Small Block Chevy with the T&D Machine Shaft Rocker Arm Kit, featuring a 1.65 intake and 1.60 exhaust ratio. Designed specifically for 18-degree Bowtie cylinder heads, this setup is the gold standard for racers who demand maximum lift and stability. The shaft-mount architecture provides a significantly more stable platform than traditional stud-mount rockers, preventing flex and ensuring your valve train remains perfectly synchronized at high RPMs.

Technical Advantages

  • Ratio: 1.65 Intake / 1.60 Exhaust for increased valve lift
  • Construction: Lightweight, high-strength aluminum alloy
  • Performance: Full roller trunnion and tip for reduced friction
  • Fitment: Precision machined for 18-degree layback heads
  • Reliability: Eliminates rocker stud deflection

By upgrading to this T&D Machine kit, you reduce the risk of valvetrain failure while simultaneously improving the efficiency of your camshaft profile. The natural aluminum construction ensures excellent heat dissipation, making it ideal for endurance and sprint racing. Each component is manufactured to tight tolerances, ensuring a perfect fit for your high-performance engine build. Don't let valvetrain instability hold back your horsepower; invest in the best shaft-mount technology available. Explore the full range of professional 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

High-Lift Performance for 18-Degree SBC Engines

Unlock more power from your Small Block Chevy with the T&D Machine Shaft Rocker Arm Kit, featuring a 1.65 intake and 1.60 exhaust ratio. Designed specifically for 18-degree Bowtie cylinder heads, this setup is the gold standard for racers who demand maximum lift and stability. The shaft-mount architecture provides a significantly more stable platform than traditional stud-mount rockers, preventing flex and ensuring your valve train remains perfectly synchronized at high RPMs.

Technical Advantages

  • Ratio: 1.65 Intake / 1.60 Exhaust for increased valve lift
  • Construction: Lightweight, high-strength aluminum alloy
  • Performance: Full roller trunnion and tip for reduced friction
  • Fitment: Precision machined for 18-degree layback heads
  • Reliability: Eliminates rocker stud deflection

By upgrading to this T&D Machine kit, you reduce the risk of valvetrain failure while simultaneously improving the efficiency of your camshaft profile. The natural aluminum construction ensures excellent heat dissipation, making it ideal for endurance and sprint racing. Each component is manufactured to tight tolerances, ensuring a perfect fit for your high-performance engine build. Don't let valvetrain instability hold back your horsepower; invest in the best shaft-mount technology available. Explore the full range of professional 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

High-Lift Performance for 18-Degree SBC Engines

Unlock more power from your Small Block Chevy with the T&D Machine Shaft Rocker Arm Kit, featuring a 1.65 intake and 1.60 exhaust ratio. Designed specifically for 18-degree Bowtie cylinder heads, this setup is the gold standard for racers who demand maximum lift and stability. The shaft-mount architecture provides a significantly more stable platform than traditional stud-mount rockers, preventing flex and ensuring your valve train remains perfectly synchronized at high RPMs.

Technical Advantages

  • Ratio: 1.65 Intake / 1.60 Exhaust for increased valve lift
  • Construction: Lightweight, high-strength aluminum alloy
  • Performance: Full roller trunnion and tip for reduced friction
  • Fitment: Precision machined for 18-degree layback heads
  • Reliability: Eliminates rocker stud deflection

By upgrading to this T&D Machine kit, you reduce the risk of valvetrain failure while simultaneously improving the efficiency of your camshaft profile. The natural aluminum construction ensures excellent heat dissipation, making it ideal for endurance and sprint racing. Each component is manufactured to tight tolerances, ensuring a perfect fit for your high-performance engine build. Don't let valvetrain instability hold back your horsepower; invest in the best shaft-mount technology available. Explore the full range of professional engine components at GGCRACING.

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