I know this is a super old thread, but this is the top thread when you Google search this issue and I found a much simpler solution to this problem that should be repeatable.
I did the usual: penetrating oil. Did this for 2 days while I was banging away at the drums. I’m sure this did something, but if there was any movement at all it was minuscule. I saw
@drewscruis mention a power steering pulley and decided to take a step back and do some research. Measured the inside radius of the tapered part of the drum and found that it’s almost the exact same size one of the pullers in this set from
harbor freight (the 1.13 inch one). Worked like a charm. The thing fit on almost perfectly and pulled the drum right off. Best thing is these things are standard sizes so you can just loan one for free from your local autozone/orielly’s. Hope this helps someone else.