T&D Machine Rocker Shaft .625 x 3.229 Steel — Fits Big Chief/Duke Wide Intake

SKU: BJJD_0280
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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

T&D Machine Rocker Shaft for Big Chief and Duke Wide Intake

For engines utilizing Big Chief or Duke wide intake cylinder heads, the T&D Machine .625 x 3.229-inch rocker shaft is the gold standard for valvetrain stability. Engineered to meet the unique spacing and load requirements of these high-performance heads, this shaft ensures that your rocker arms remain perfectly aligned, even under the most demanding racing conditions.

Technical Specifications and Benefits

  • Optimized Dimensions: .625-inch OD and 3.229-inch length tailored for specific wide intake configurations.
  • Heavy-Duty Steel: Manufactured to resist deflection and maintain integrity under extreme valve spring pressures.
  • Racing-Grade Reliability: Designed to withstand the heat and stress of high-RPM operation.

When running high-performance cylinder heads like the Big Chief or Duke, the valvetrain is subjected to immense forces. A standard shaft may flex, leading to inconsistent valve timing and potential engine damage. The T&D Machine shaft provides the rigidity required to keep your valvetrain operating within its design parameters. By maintaining precise rocker geometry, you maximize the efficiency of your camshaft, ensuring that your engine produces consistent power throughout the entire rev range. This component is a must-have for any serious engine builder looking to optimize their valvetrain for competitive racing. With a focus on durability and precision, T&D Machine continues to lead the way in valvetrain technology. For all your high-performance engine needs, trust the experts 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

T&D Machine Rocker Shaft for Big Chief and Duke Wide Intake

For engines utilizing Big Chief or Duke wide intake cylinder heads, the T&D Machine .625 x 3.229-inch rocker shaft is the gold standard for valvetrain stability. Engineered to meet the unique spacing and load requirements of these high-performance heads, this shaft ensures that your rocker arms remain perfectly aligned, even under the most demanding racing conditions.

Technical Specifications and Benefits

  • Optimized Dimensions: .625-inch OD and 3.229-inch length tailored for specific wide intake configurations.
  • Heavy-Duty Steel: Manufactured to resist deflection and maintain integrity under extreme valve spring pressures.
  • Racing-Grade Reliability: Designed to withstand the heat and stress of high-RPM operation.

When running high-performance cylinder heads like the Big Chief or Duke, the valvetrain is subjected to immense forces. A standard shaft may flex, leading to inconsistent valve timing and potential engine damage. The T&D Machine shaft provides the rigidity required to keep your valvetrain operating within its design parameters. By maintaining precise rocker geometry, you maximize the efficiency of your camshaft, ensuring that your engine produces consistent power throughout the entire rev range. This component is a must-have for any serious engine builder looking to optimize their valvetrain for competitive racing. With a focus on durability and precision, T&D Machine continues to lead the way in valvetrain technology. For all your high-performance engine needs, trust the experts 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

T&D Machine Rocker Shaft for Big Chief and Duke Wide Intake

For engines utilizing Big Chief or Duke wide intake cylinder heads, the T&D Machine .625 x 3.229-inch rocker shaft is the gold standard for valvetrain stability. Engineered to meet the unique spacing and load requirements of these high-performance heads, this shaft ensures that your rocker arms remain perfectly aligned, even under the most demanding racing conditions.

Technical Specifications and Benefits

  • Optimized Dimensions: .625-inch OD and 3.229-inch length tailored for specific wide intake configurations.
  • Heavy-Duty Steel: Manufactured to resist deflection and maintain integrity under extreme valve spring pressures.
  • Racing-Grade Reliability: Designed to withstand the heat and stress of high-RPM operation.

When running high-performance cylinder heads like the Big Chief or Duke, the valvetrain is subjected to immense forces. A standard shaft may flex, leading to inconsistent valve timing and potential engine damage. The T&D Machine shaft provides the rigidity required to keep your valvetrain operating within its design parameters. By maintaining precise rocker geometry, you maximize the efficiency of your camshaft, ensuring that your engine produces consistent power throughout the entire rev range. This component is a must-have for any serious engine builder looking to optimize their valvetrain for competitive racing. With a focus on durability and precision, T&D Machine continues to lead the way in valvetrain technology. For all your high-performance engine needs, trust the experts at GGCRACING.

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