Loadmaster covers a lot of territory, and doesn't really say anything about the truck - in the 40's and early 50's the Loadmaster engine was a 235 6cyl for the bigger trucks [Thriftmaster was the 'base' engine], in the mid-50's Loadmaster was the big truck V8 - just marketing terms really ... "aquiring a Chevy Loadmaster" doesn't give anyone any info to evaluate the truck ... is it an 'deco' style, an AD or TF? is it a 1 ton or a 1.5 ton or a 5 ton?
you'll get better answers when you can get a year and model number - most of the bigger trucks don't bring as much as the 1/2 tons
Bill