Original Message
Your torque convertor is improperly bolted.
By Dave Shoe - 08/30/2001 12:10:28 AM; IP 216.243.158.166
I suspect someone installed your torque convertor with the drain plug in the wrong position so that it is distorting the flexplate.

Look at the four 9/16" nuts which bolt the torque convertor to the flexplate, note that as the engine is manually rotated that there are two larger holes (maybe 3/4" in diameter) between these nuts , and one of these should have a (7/16"?) pipe plug poking thru so you can drain the convertor. I suspect that neither hole has this plug poking through, because it's positioned 90 degrees away, at a location which doesn't have a drain hole in the flexplate - this forces the flexplate to warp.

If this is so, I suspect that removing the four flexplate nuts, and then loosening the tranny crossmember bolts a little, and then loosening the bellhousing bolts and prying the tranny away from the engine about 1" will allow you spin the torque convertor to the correct position and reengage the flexplate at the correct position.

Just my suspicion.

Shoe.
This thread, so far...
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Collapse <a href=../ForumFE/reply.aspx?ID=7879&Reply=7879><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor7879" onclick="return false;">390 Engine Vibration in '66 T-Bird (Part 2)</a>&nbsp;-- <font color=#0000ff>Paladin, <i>08/29/2001</i></font><script type="text/javascript">
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 390 Engine Vibration in '66 T-Bird (Part 2) -- Paladin, 08/29/2001
Your torque convertor is improperly bolted. -- Dave Shoe, 08/30/2001
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