[Ken Henry]

Here is a related question I have always wondered about: The 51 OD transmission does not have an electrical lockout switch on it for when the OD handle is pulled out, while the 49/50 design does. Consequently, on the 51, wouldn't the relay continue to energize at the cutoff speed and try to engage the OD solenoid? I realize the solenoid is prevented mechanically from engaging, but wouldn't the whole operation be hard on the electrical system? My understanding is that the solenoid draws the most amps when it tries to engage?


I have a 49/50 OD trans in my 51 presently (a leaker), and a spare 51 trans I'd like to rebuild and use, but have been hesitating due to the lack of the electrical lockout switch... Ken