This is a very long and very detailed five part introduction, disassembly and reassembly video about the General Motors Hydra-Matic 4-speed Automatic Transmissi

This is a very long and very detailed five part introduction, disassembly and reassembly video about the General Motors Hydra-Matic 4-speed Automatic Transmission, originally designed in the 1930s and first incorporated into a car in 1940. I definitely recommend watching it on 1.5x speed. More details about this transmission here: https://en.wikipedia.org/wiki/Hydramatic https://en.wikipedia.org/wiki/Hydramatic