And the flexplate bolted right on; no mods required?
The factory bolts are a low-profile design
If the TC is not properly indexed to the pump, the pump will push the TC forward into the back of the engine .
When properly installed,the TC will sit rearward of the bellhouse face and after the trans and engine have been mated, you will have to pull the TC forward,to get it to mate to the flexplate. Is this how it went for you?
If yes, then I would suspect a TC bolt is hitting the cam plug, possibly because it is in backwards. Or one of the galley plugs, possibly because wrong one installed or not fully screwed in.
If you get one flywheel attaching bolt lined up down at about 6-o'clock when the crank stops turning, then I would bet that bolt at near 12 O'clock is hitting something up there, and you will have to remove the trans to fix it.
That's all I got
Sorry
