You'd want to have your machine shop use their swedge cutter tool to remove the "swedge" at the base of the stud that holds it to the drum then it'll easily press out
Hello! Try dropping the drum assembly down flat on the floor from about waist high. Or, try a big "Dead-blow" hammer, or try a block of wood with a BFH...most work! Jeff
Be very careful on removing the drum if you want to save it, it is very easy to ruin them by not removing the swedges first I use a deep well socket under the wheel stud and a lug nut on the stud and then drive them out, I don't own or know anyone with a swedge cutter, maybe I should buy one now that those old drums are getting harder to find the left sides on the early cars with left hand threads on the driver sides seem to be the worst ones to get off
Most good machine shops have the cutter.We also had the tool to swedge the drums back on at work before.Ive seen the hubs bend also because people tried to hammer the studs out.Droppimg the drum I doubt very much would get the hub to pop off unless they were removed before.Rocky