I'm not sure where you'd find numbers like that. you can get in touch with GM and order a restoration pack with detailed info, but I don't really know how detailed.
There is some good info here though.
http://chevy.oldcarmanualproject.com/chevyresto/50index.htm

I just bought a 1950 3800 and it was made at the Oakland plant as well. I'm in San
Jose, where are you?

1950 Chevy 3800 1-Ton Long Bed
In the Stovebolt Gallery
More pix on Flickr

Sold all the bikes, leaving California behind.