The dizzy was stuck in the block on my '79 and would not move at all. I even broke the strap on an oil filter removal tool trying to get it loose. I looked at the threads dealing with this issue and someone suggested removing the oil pan, the oil pump, and driving it out of the block from beneath. That seemed a little extreme to remove something that was probably just glued in with oil that had turned to shellac from overheating. I made this tool using 1/4" steel plate, a slidehammer, and a piece of pipe to clear the dizzy shaft. It took about an hour and a half to make the tool and about 6 whacks of the slidehammer to get the distributor loose. No damage to the three threaded holes in the dizzy. I have no idea if this is a problem common to our 2F engines, but I could tell from the dings in the dizzy that the PO had tried to move the dizzy and had not been able to get it to move. Once I got it out, I replaced the vacuum advance with a good used one, cleaned and lubed the points plate where the stationary pickup is screwed, put a new o-ring on the shaft and made a new o-ring for the dizzy cap seal.
