Timing on a 65 200 ci

My subject line not be the right wording. My trouble is more that the distributer will not turn. It is what I quess is an old style because the vacuum line is a hard conection and not a flexible line. I really could use a hand it get this squared away.  

use a dwell meter and verify the points dwell adjustment..

changing dwell as the points wear changes the timing...

once you replace the points and get them back to the factory setting.. the timing will be right back where it belongs most of the time...

if you don't have a dwell meter.. harbor fright had nice digital versions for just under 40 bucks..  actron also has 2 at around 40 bucks..

these allow you to clip to the negative side of the coil and either crank the engine and see the actual amount of time the points are open..verses the time they are closed...  

you actually ask about how to turn your distributer... the problem is.. it might be seized in the block..   you are going to probably want to use .. if you decide to attempt to move it...  some kind of spray like wd40.. or one of the many other options and soak the area where the housing is slipped into the block..

then .. possibly rotate it back and forth a little at a time till it breaks free..  

once you get this out..   please... DO NOT DROP the distributer back into the engine block without greasing the opening in the block.. with a thin layer of some kind of grease other than silicone grease.. you might want to grease the housing where it also fits in the block...   there is an electrical charge that passes through the housing that causes this corrosion.. its supposed to go through the hold down clamp.. its the high voltage spark return .. to make a complete circuit...

here is an article in the how to section above on the loadomatic distributer..

http://www.mustangmonthly.com/howto/mump_1001_how_to_rebuild_autolite_loadomatic_distrbutors/viewall.html  

I really don't want to remove the distributer I just want to be able to set the timing. I have been spraying the distributer with Kroil for about a week. Right now the timing is right-on but I know that one day it will be an issue. The car was not used much for its whole life so there is very limited ware on things but also many things haven't been moved in 47 years.  

have a few like that, they can be a real PITA trying to get them freed up, keep spraying them, have even had to use a pipe wrench on them with heat, this is where you wish the valve covers had been leaking , and you would not have the problem. when you do get it freed up it may be an ideal to replace the O ring on the distributer, have seen them break on stiff distributers, and then start to leak after.  

If it is correct today, keep soaking it but don't do anything drastic.  
Bill

1966 coupe
1995 Cobra R