Cummin Swap - 47RH OD switch:
 

I'm swapping in a cummins with an 47RH into my '78 Ford Crewcab. For the Overdrive, I plan on using a switch to actuate the overdrive and a switch to actuate the TC lockup.

Here's my question. If I'm driving on the freeway and I have the OD switch flipped so the OD is engaged, does the trans automatically shift out of OD if I slow down? Or do I have to flip the switch to OD off?

And what happens if I accidentally leave it in OD and come to a stop?

I know if you leave the TC in lockup and come to a stop the engine bogs down and it shuts the motor down.

most likely would stay in overdrive and be impossible to get going again, although i dont know if the drop in line pressure from the pump slowing down would make it come out of overdrive:humm: From my experience you may have better luck with replies on dodge related questions if you put the word AIRDOG, YETI or ENERGYDRINK, in your post.:w2:

Or perhaps if your post had 18 foot wide trailer mirrors on it.....:hellox: