Originally Posted by Turbostang500
This might piss you off because it is off topic but I just read your sig and I think you should do an exhaust next! lol
On a serious note, it sounds like somthing out of balance internal. If you had a shop do your rebuild then I think I would be contacting them fairly quickly and seeing what they have to say. I don't know the inside of these trans but have seen a few other ford trans. I think the 2 clutches used for 3rd gear is the input clutch and the direct clutch which both should be responsible for other gears as well. Input clutch is for all forward gears. The direct clutch should be for 3rd and reverse. If you are having a problem with only 3rd gear then I don't think it would be a clutch problem.
I don't know the inside of this trans though som what I have said shouldn't be taken as fact! only trying to maybe get the topic going a little.
I allready called the shop and they are going to look at it wednesday, Im not driving it till then, Dont want somthing to go through my 900 dollar Torque converter. They did say over the phone they have never heard of this so I was hoping someone on here would have.
As for what is next , I think you are right on, I was about to order an exhaust when this problem started, If its not a costly fix then Consider it done, I have not decided on 4 or 5 inch, that will be my next question, which sounds better?