84 TA with a recent 350 swap, 700R4. I've adjusted the TV cable. The normal driving shifts and shift points are ok. The 2-1 downshift is also fine.

The video shows a WOT run to 60MPH from a stand still, with the trans shifted manually around 4500 rpm. The 1-2 shift seems to take longer than normal and the trans feels like it's hunting for the gear.

It does the same thing when shifting automatically at WOT but seems to take even longer to complete the 1-2 shift.

Can someone over here please listen to the sound and see if they can tell what's going on during the 1-2 shift? Compare the sound to the 2-3 shift which sound more normal.

http://www.youtube.com/watch?v=q2w7e-NkeFQ

 

I can't tell from the video - slipping is when the engine keeps revving, but the car doesn't move faster in relation.