So I acquired a T86-1 with an R6-1 attached. Said to be an overdrive. However it has no lock out solenoid, no lock out cable lever.
Wondering if this could be the model that was engaged by just letting off the gas when driving at 35mph? Maybe just before they added the lock out lever.
I have read the article on overdrives, and it looks very similar to the 1938 od pictured. Really would like to find out some more info, hoping you all might point me in the right direction. Thank you.