727 TC Installed - Probably Wrong...

The only way you'll know for sure is to get the converter out, and then remove the pump and inspect the lugs on the pump gears, as they may have been damaged. Also, closely inspect the converter hub. Look for burrs or nicks on the hub and also look carefully in the slots where the pump lugs fit. Any damage in there might spell disaster down the road if not tended to.
My feeling is the converter was not seated into the pump gears, and while your at it, measure the hole in the crank and then measure the converter pilot. The crank pilot should measure around 1.810" and the hole in the crank a hair larger.