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.

This is what I was thinking. The TC is probably not seated correctly on the transmission even though everything is bolted up.

What I would do is take two long shank bolts and put them in at about 3 and 9 o'clock then remove or loosen all the other bellhouse bolts. Slide the tranny back on the long shankers, and futz to your hearts content,lol. You may have to remove the rear mount and put a jack under the pan and remove the back of the driveshaft.

But just a heads up; you should be able to turn the engine backwards if a bolt is jammed up against one of the oil passage tunnels or whatever else.
But if the starter is jammed into the ring-gear then it all stops.
And if the engine happens to be hydraulicked.......you will have wasted a lot of time and energy.

Seems like a good plan, will see if I can located some long bolts for this.

The engine turned over before attaching the transmission. The engine and transmission are both rebuilt with 0 miles on either.