Re: Changing the Ultramatic for a Standard Transmission

Posted by HH56 On 2009/6/21 17:12:29

You can change to standard and many have done so, but almost need a complete parts car as there are many small brackets, linkages and pieces which also have to change. The driveshaft is different as is the rear end ratio--although yours would probably work as I believe it was an option for standard cars.

It sounds as if your Ultra needs the services of a good mechanic familiar with those units. The local garage or AAMCO or some such just is not up to the task--even if they were interested in trying. Perhaps someone on your side of the country can recommend such a person.

Rebuilding an Ultra entails detail work and replacing bushings, seals, piston rings and many other small pieces that wear so as to maintain pressures. The throttle shaft linkage and pressure adjustment is critical. Just opening it up and changing clutch disks won't do it. It really sounds as if you might have an internal leak and a necessary pressure is not there.