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Originally Posted by Sandy G
I THINK the Hydramatic was always a 3 speed.....
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In my long ago recollection I think I remember the "Dual Coupling Hydramatic" in my 61 Caddy as having been a four speed . I don't know how they did it , but I seem to recall the "Dual Coupling" referring to a second small torque converter type device behind the regular torque converter , and that may have had something to do with an extra ratio .
Edited to add ; Wikki identifies this as the "Controlled Coupling Hydramatic" and confirms it to be a four speed . I'm almost certain , however , that the car's owner's manual identified it as a "Dual Coupling Hydramatic" , I'm not sure which is correct except that I remember having 4 speeds in my 61 and only 3 speeds in my 64 , and felt the 4 speed better suited a car of that size (nice low first gear to get it moving quickly) .
Quote:
Originally Posted by init4fun
I had a 1961 Cadillac that had PNDLR and then a 1964 that had the normal PRNDL , so for Cadillac the changeover must have been 1962 or 1963 . the 61 had what they called a "Dual Coupling Hydramatic" whereas the 64 had the "Turbo Hydramatic 400" .
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