The two pieces are pressed together. FORD only sold passenger car front drums as an assembly. Aftermarket drums are available without the hub.
Now I think you are one of the few here that realize taking a BFH to a drum and hub asm may cause the drum flange to deform. The correct service procedure is to press on and off supporting the drum flange in the process.
Most reputable shops have a shop press. Heat and beat shops do not.
Most likely if the drum slid off the hub, it had already been the subject of a BFH before in it's service life.
Now, let the games begin. I expect at a minimum a fifty post count on this thread... :frown:
First you FE, then mumbles and geometry challenged Ragamuffin
Like I said 3 other times. Not going to happen ol boy.
The Drums from the factory are NOT pressed on kultulz. In face I've have SEVERAL All original 60-66 era front drums in my hands that did NOT need a BFH. Because they had Hub Caps on the wheels their entire life.
To remove the hub only took a slight bump with a small ball peen in a circle around the bearing cup lip.
They were definitely NOT pressed in with a hydraulic press, more like the pressure of one palm holding the drum and one holding the hub and pressing together., but definitely not with any untoward pressure on them and they were bone stock originals.
If you mic the hub and mic the opening you will find that they are exactly the same diameter + - a hundred-thousandth or so. It's definitely NOT a squeeze it on type situation though.