When it comes to full-size 4x4 trucks and SUVs, the General Motors Turbo-Hydramatic 400 (TH400) automatic transmission is perhaps one of the most coveted automatic transmissions in existence ...

Building a 1955 Chevy Turbo 400 into a performance transmission - Car Craft Magazine ...

The Turbo 400 is supported with a transmission jack for removal. Because the Gearstar 700-R4 has similar dimensions to the Turbo 400, it is easy to swap without extensive modifications.