Re: 1955 vs 1956 Ultramatic converter lockup.

Posted by R H On 2023/6/4 4:30:54

Ross

The 56

With your shift mod. Isn't it to change the shift points.

Mine. Under power it won't shift till I let off gas.

When . Going light pedal. It will shift into d d.

My converter will disengage around 10-15.mph.

The upshift on 56 was to low. And that's where slipping happened.