Was that the case in the 60s as well? I know trucks of that era had much lower capacity than today, even when comparing across class like "half-ton" trucks.
The Federal-Aid Highway Act of 1956 set the gross vehicle weight limit for trucks at 73,280lbs. I imagine trucks of the day probably at least came close to that limit?
Yes I understand, that's why I was asking about box trucks of the day. I'll dig into it myself as I am curious now, I've only ever really looked into cab-over bread trucks from that era and those aren't a great comparison either. I was just curious if the GP already knew what 60s era box trucks would have been rated for.