T&D Machine SportComp 1.85 Ratio LH Offset Rocker Arm — Fits Big Block Chevy

SKU: BJJD_14-1291-185
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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.

Superior Valvetrain Stability

Unlock the full potential of your Big Block Chevy with the T&D Machine SportComp 1.85 Ratio Left-Hand Offset Rocker Arm. This premium shaft-mount rocker is designed to provide the ultimate in valvetrain stability, ensuring that your engine performs at its peak under any conditions. With a 1.85 ratio, you gain the extra lift needed to maximize airflow through your cylinder heads, resulting in significant power gains.

Why Choose T&D SportComp?

  • Increased Lift: 1.85 ratio for improved airflow
  • Precision Offset: .170 LH offset for perfect alignment
  • Durability: High-strength aluminum construction
  • Performance: Full roller tip minimizes friction
  • Stability: Shaft-mount system eliminates stud flex
  • Compatibility: Designed for Big Block Chevy

The SportComp series is renowned for its ability to withstand the rigors of racing while remaining lightweight enough for street performance. The left-hand offset is engineered to correct geometry issues in specific BBC head designs, ensuring the roller tip stays centered on the valve stem throughout the entire lift cycle. This precision reduces side-loading, which protects your valve guides and ensures consistent valve timing. By upgrading to a shaft-mount system, you eliminate the common issues associated with stud-mounted rockers, such as deflection and uneven wear. Whether you are building a high-performance street machine or a dedicated race car, these rocker arms provide the reliability and performance you need to stay ahead of the competition. Trust in the quality and engineering of T&D Machine, available now 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.

Superior Valvetrain Stability

Unlock the full potential of your Big Block Chevy with the T&D Machine SportComp 1.85 Ratio Left-Hand Offset Rocker Arm. This premium shaft-mount rocker is designed to provide the ultimate in valvetrain stability, ensuring that your engine performs at its peak under any conditions. With a 1.85 ratio, you gain the extra lift needed to maximize airflow through your cylinder heads, resulting in significant power gains.

Why Choose T&D SportComp?

  • Increased Lift: 1.85 ratio for improved airflow
  • Precision Offset: .170 LH offset for perfect alignment
  • Durability: High-strength aluminum construction
  • Performance: Full roller tip minimizes friction
  • Stability: Shaft-mount system eliminates stud flex
  • Compatibility: Designed for Big Block Chevy

The SportComp series is renowned for its ability to withstand the rigors of racing while remaining lightweight enough for street performance. The left-hand offset is engineered to correct geometry issues in specific BBC head designs, ensuring the roller tip stays centered on the valve stem throughout the entire lift cycle. This precision reduces side-loading, which protects your valve guides and ensures consistent valve timing. By upgrading to a shaft-mount system, you eliminate the common issues associated with stud-mounted rockers, such as deflection and uneven wear. Whether you are building a high-performance street machine or a dedicated race car, these rocker arms provide the reliability and performance you need to stay ahead of the competition. Trust in the quality and engineering of T&D Machine, available now 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.

Superior Valvetrain Stability

Unlock the full potential of your Big Block Chevy with the T&D Machine SportComp 1.85 Ratio Left-Hand Offset Rocker Arm. This premium shaft-mount rocker is designed to provide the ultimate in valvetrain stability, ensuring that your engine performs at its peak under any conditions. With a 1.85 ratio, you gain the extra lift needed to maximize airflow through your cylinder heads, resulting in significant power gains.

Why Choose T&D SportComp?

  • Increased Lift: 1.85 ratio for improved airflow
  • Precision Offset: .170 LH offset for perfect alignment
  • Durability: High-strength aluminum construction
  • Performance: Full roller tip minimizes friction
  • Stability: Shaft-mount system eliminates stud flex
  • Compatibility: Designed for Big Block Chevy

The SportComp series is renowned for its ability to withstand the rigors of racing while remaining lightweight enough for street performance. The left-hand offset is engineered to correct geometry issues in specific BBC head designs, ensuring the roller tip stays centered on the valve stem throughout the entire lift cycle. This precision reduces side-loading, which protects your valve guides and ensures consistent valve timing. By upgrading to a shaft-mount system, you eliminate the common issues associated with stud-mounted rockers, such as deflection and uneven wear. Whether you are building a high-performance street machine or a dedicated race car, these rocker arms provide the reliability and performance you need to stay ahead of the competition. Trust in the quality and engineering of T&D Machine, available now at GGCRACING.

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