No 1st 2nd or 3rd but R works

First off this 727 has had many 1/8 mile and 1/4 mile runs and was build in 1990!

It is in a 1970 Duster with a mild 360 in it. Car has been off the street in storage since 1997. I have had it out many times since 1997 and even ran some 1/8 mile good times in it in 2012.

This week I am moving it to Virginia and after getting it running again after sitting a good year I had a problem getting it in reverse. I then drove it around the storage facility for 1 min. Then my D 2 1 did not work. I was able to get it back in R but it was bucking in and out of R. It is working fine in R now. It will barely roll in D and seems to roll better in 2 but it is like it has a 6000 RPM Stall in it. It will peg 5000! It is like the Converter is gone in it. I changed the filter and fluid and still the same thing.

Any ideas?