What is a muncie gearbox?

A Muncie gearbox is a type of manual transmission commonly used in American muscle cars, particularly those produced by General Motors in the 1960s and 1970s. Known for its durability and performance, the Muncie gearbox typically features a four-speed design and is often associated with high-performance engines. Models like the Muncie M20, M21, and M22 differ primarily in gear ratiOS and design characteristics, catering to various driving needs and preferences. Its distinctive whine and robust construction have made it a favorite among car enthusiasts and collectors.