Re: '50 Ultramatic Trans Cooler Lines

Posted by Joe On 2024/1/24 14:26:58

Hey all, quick update.

I tested Howard's hypothesis and confirmed his assumption. I followed what we were assuming was the feed line and disconnected what we assumed was the return at the cooler. I then turned the engine over (the head is off at the moment, so it spins relatively quickly) to see if any fluid would pump out - confirmed that it did. Relative to my picture:

- the top connection (i.e. the inboard connection) is the supply
- the bottom connection (i.e. outboard connection) is the return

I did dive a little further into past posts discussing cooling, and running the cooler in sequence has been brought up as a positive addition for the transmission. One user did mention that they experienced a failure of their Ultramatic after having cut out the OE cooler altogether for an external air cooled unit. In that scenario, the user sat in a traffic jam for an extended period of time, the transmission overheated and required a complete rebuild.