Check the FAXON website. I have bought several manuals through them. They sell reprints of factory manuals.
here's a taste of what you'd find in the factory shop manual... http://chevy.oldcarmanualproject.com/shop/1942_47/index.htm
Here's the Fisher body manual as well, investing in the appropriate manuals will save you a lot of headaches http://chevy.oldcarmanualproject.com/fisher/1946_47/index.htm