727 TC Installed - Probably Wrong...

Unless I missed something, you probably didn't seat the converter in the trans correctly. I would loosen the bell housing bolts to take pressure off the trans pump. Should be easier to rotate to take out the converter bolts. Then you can make sure the converter is seated properly. I think it's two clunks you need to hear as you rotate the converter. You will feel it move into the trans. But you might want to completely remove the converter to see if it's damaged. When it's in properly, you will need to pull the converter towards the engine a small amount when putting the converter bolts back in. There's some posts on this.