Threads

On my 69 with drums it wasn't as simple as just tapping the LH studs out
and driving in RH studs. They were set in the hub and drum similar to a rivit.
Sweged as posted above. This makes the hub and drum one part so to speak.
I didn't have a press at the time and tried to knock them out with a hammer.
Ruined a drum learning this. If they were removed in a press with a socket
backing up the hub it may work without damage to your parts.
Honestly rebuilding all the drum brakes on my car was the biggest waste of money I
have ever spent on any of my a-bodies. They were the most inadequate brakes
I have ever experienced after a complete rebuild.
This was on a 340 swinger. I have been doing the disc brake swap ever since and
no longer have to worry about bumping into cars in front of me in the drive thru line
or at traffic lights.
Hope my experience or mistakes on this can benefit someone that is new
to these cars as I was then. I learned the only work that should be done on the drums is to toss the entire front drum system on the iron pile. I know this is a harsh way to be talking about my
favorite cars ever made but I am being serious. If you only do 1 mod to your car. Front disc is it.