In the day, that 248 would haul whatever that truck could carry. It might not haul the load quickly, but it it would haul the load.
Close on sixty years ago my father was hauling 17,500 pounds of brick on a 1949 Studebaker 2R-17 two-ton truck powered by a 245-cid flathead "big six." That Studebaker was not especially fast -- although i more than once saw 70 mph on the speedometer in the high side of the two-speed axle -- but it got the job done.
i daresay your 248 GMC can do as well or a little better.
God's Peace to you.
d
Inliner #1450
