Re: 1955 vs 1956 Ultramatic converter lockup.
Posted by R H On 2023/6/4 4:30:54
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.
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