Sleep is over rated!
I was really, really tired but just had to get the head off of the 350 one evening (or was it morning?)
Head didn't want to come off, so I took a crowbar to it.
After I heard a POP I realized that I neglected to remove the lower row of bolts........

Yep, I was leaning on the crowbar.
Stripped the valves, etc. out of the head and off to the scrap yard it went.