Midwest Muncie LLC 4-speeds are warranted for 12 months or 12,000 miles (Whichever occurs first) against manufacturing defects when installed in an unmodified in any way, factory stock …

The Muncie transmission began replacing the Borg-Warner 4-speed transmission on Wednesday, February 6, 1963, when the first Muncie 4 speed transmissions were shipped to the Baltimore …

Identifying Muncie 4- Speeds. Several things are needed to identify a Muncie correctly. The first is a main case casting number. Second a count of the input shaft and output shaft splines and if …

We carry a large selection of Muncie 4 Speed Transmission Parts, Complete Muncie Transmission Units, and Cases. We also offer Transmission Rebuild Service and Case Repair.

Jun 16, 2025 · While many people know about the big blocks and raw power of classic muscle, the Muncie four-speed transmission is what sends that power from the engine to the wheels. …

Serial numbers for Muncie 4 speeds always begin with the letter "P". P stands for Muncie Plant.

Aug 7, 2018 · According to Cangialosi, GM took the basic T-10 design and beefed it up to conceive the Muncie M20 and M21 four-speed transmissions, which arrived in 1963. GM's …

Explore the detailed diagram of a Muncie 4-speed transmission. Learn about the different components and how they work together to provide efficient power transmission.

Therefore, the Muncie patent is basically a design for the layout of a 4-speed transmission. This “layout” is a 4-speed transmission with four forward gear ratios in the main case, a midplate …

Nov 12, 2014 · Even today, the Muncie 4-speed transmission remains a mechanical icon and an enduring symbol of America’s golden age of horsepower. The Muncie 4-speed earned its …