Stuck distributor gear 318la
Did pretty much the same thing one time - may have been the first time - reinstalled an oilpump.
Pulled the pump and had cracked the nose.
Or maybe I went to the parts guy at the dealer first and then pulled it, but whichever the sequence he knew immediately. Said something like "everyone does that once". So got a new pump and made sure I held up tight to the block while snugging up attaching bolts. Lesson learned...