Tail shaft and tail housing need to be changed. I've been planning on doing this with a T-Bird 4R70W for several years but have never got around to it.
If you already have the original transmission you should be all set for parts. Otherwise, tail housing should be fairly easy to find in the junk yard. I couldn't find a used tail shaft so I had to buy a new one from Ford. The one I have is F4TZ-7060-A (that I bought on March 30, 2000 :shaking: I's slow), should be the same for AOD, AOD-E and 4R70W.
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