[175K911]

Heat may be your friend. When I tried to get the shock bolts out of my current '86, they wouldn't budge. Tried everything else and finally put head to the control arm. About a minute into the heating process there was a puff of smoke and out the bolt came.
Apparently somewhere in the history of the car before I owned it someone put Loctite on the bolt and it needed heat to melt before the bolt would turn. But be careful, the last thing you want to do is damage the threads in the control arm.