Ok, so I should have spun the crank before putting the new motor and tranny back in the car and now I can't tell what's catching. It's a simple straight 6 but it's not been turned over in a long time as this project got put on hold while my dad had cancer. When I tap the starter it went about 1/2 crank turn, difficultly, and stopped. I pulled the plugs and put lightweight oil in and turned the crank by hand backwards. It goes that direction a very short distance and stops. I can work the crank back and forth between these two stopping points and thats it. I can see the flywheel turn also as the cover is off. I doubt if any torque converter bolts are hitting (but maybe the problem) as the tranny was difficult to line up but when it was perfect slid right in and bolted up tight without forcing anything. Although that was a long time ago and I don't remember much of the details now. Next step or more suggetsions? Thanks, Mark