Well the whole truth is that I did change the seal. Also thought I'd just let the bearing ride since it was a running engine before I took it apart. After a bit of clarity I decided that leaving it as is would be a bad idea. When I installed the upper part of the seal I did drop the crank about 3/8", maybe more, to get the new seal in. While doing that the upper bearing did move and I had to slide it back into place.

I'm GUESSING it's not the doweled variety. Block is dated H55 (August '55?), So I'm GUESSING again that between the movement of the upper bearing and the date it's not a doweled bearing. Thoughts?
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1954 3600 Stakebed
non-original engine out of a '55 passenger car with powerglide