The way I usually find answers to questions like that one is to look it up in the Restoration Pack found at the Old Car Manual Project web pages.
http://chevy.oldcarmanualproject.com/chevyresto/Unfortunately I'm not getting a response from those pages right now so best I could do would be to guess. My guess is 8800 or 8900 pounds based on what the '47 to '54 trucks were rated at.
I'm not sure what's up with Old Car Manual Project, hopefully its a temporary thing and they will be back up soon. I rely on them quite a bit.
