SA Design Books Muncie 4-Speed Transmissions — How to Rebuild and Modify

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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 SA Design Books

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

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The Ultimate Muncie Rebuild Resource

The Muncie 4-speed is legendary in the world of classic muscle cars, but even the best gearboxes require expert care. Muncie 4-Speed Transmissions: How to Rebuild and Modify is your definitive 144-page manual for restoring these iconic transmissions to factory-fresh performance or upgrading them for modern street and strip abuse.

What You Will Learn

  • Step-by-step disassembly and inspection techniques
  • Identification of Muncie case types and gear ratios
  • Pro-tips for upgrading synchros and bearings
  • Modifying for increased torque capacity
  • Reassembly and final adjustment procedures

This book provides clear, illustrated instructions that simplify the complex internals of the Muncie gearbox. Whether you are dealing with a worn-out M20, M21, or M22, you will find the specific guidance needed to diagnose shifting issues, replace damaged gears, and ensure smooth operation under heavy load. Avoid costly shop fees by performing your own transmission overhaul with confidence. This manual is an essential addition to any classic car owner's toolbox. Find more performance literature and specialized automotive resources at GGCRACING.

Product Details

Product Description
Part Numbers
Sizing & Fit

About SA Design Books

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

Watch in action

The Ultimate Muncie Rebuild Resource

The Muncie 4-speed is legendary in the world of classic muscle cars, but even the best gearboxes require expert care. Muncie 4-Speed Transmissions: How to Rebuild and Modify is your definitive 144-page manual for restoring these iconic transmissions to factory-fresh performance or upgrading them for modern street and strip abuse.

What You Will Learn

  • Step-by-step disassembly and inspection techniques
  • Identification of Muncie case types and gear ratios
  • Pro-tips for upgrading synchros and bearings
  • Modifying for increased torque capacity
  • Reassembly and final adjustment procedures

This book provides clear, illustrated instructions that simplify the complex internals of the Muncie gearbox. Whether you are dealing with a worn-out M20, M21, or M22, you will find the specific guidance needed to diagnose shifting issues, replace damaged gears, and ensure smooth operation under heavy load. Avoid costly shop fees by performing your own transmission overhaul with confidence. This manual is an essential addition to any classic car owner's toolbox. Find more performance literature and specialized automotive resources at GGCRACING.

Product Details

Product Description

About SA Design Books

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

Watch in action

The Ultimate Muncie Rebuild Resource

The Muncie 4-speed is legendary in the world of classic muscle cars, but even the best gearboxes require expert care. Muncie 4-Speed Transmissions: How to Rebuild and Modify is your definitive 144-page manual for restoring these iconic transmissions to factory-fresh performance or upgrading them for modern street and strip abuse.

What You Will Learn

  • Step-by-step disassembly and inspection techniques
  • Identification of Muncie case types and gear ratios
  • Pro-tips for upgrading synchros and bearings
  • Modifying for increased torque capacity
  • Reassembly and final adjustment procedures

This book provides clear, illustrated instructions that simplify the complex internals of the Muncie gearbox. Whether you are dealing with a worn-out M20, M21, or M22, you will find the specific guidance needed to diagnose shifting issues, replace damaged gears, and ensure smooth operation under heavy load. Avoid costly shop fees by performing your own transmission overhaul with confidence. This manual is an essential addition to any classic car owner's toolbox. Find more performance literature and specialized automotive resources at GGCRACING.

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