First off welcome to the forums. Second, post some pictures of the truck so we can all see what you have. There is a VIN decoder in the tech tips:
Your truck is a 1949 3800 1-ton built in September of that year in Janesville, WI.
I could not find the match for your engine pre-fix maybe someone else can, the block casting number would be more helpful.
No stupid questions good luck! There is a forum dedicated to the 3800 series so start by looking through there as well.