Triple range automatic transmisson

[CrabbyMilton]

What exactly is a triple range automatic transmission? I was looking at some late 1950's FORD school bus chassis brochures. One of the options was an ALLISON tranny called TRANSMATIC(I think) that stated it was a triple range type.
Does this mean it had selectable shift points or something else?

[luvrbus]

What exactly is a triple range automatic transmission? I was looking at some late 1950's FORD school bus chassis brochures. One of the options was an ALLISON tranny called TRANSMATIC(I think) that stated it was a triple range type.
Does this mean it had selectable shift points or something else?

It was a 3 speed transmission with a Allison Torque Converter drive on the rear,there is a well driller here that has one mounted to a 3-71

[CrabbyMilton]

The specs I saw stated that it was a 6 speed triple range but thanks anyway.

[luvrbus]

The specs I saw stated that it was a 6 speed triple range but thanks anyway.

His transmission has a high and low range before it goes through  TorqueAmatic