Frickin' timing chain

Just stabbed a distributor and remounted a carb on a little 318 in my Dart. Started right up, but runs like caca. So, vacuum gauge shows low and slightly erratic needle at about 11-13 in Hg.

Pull the distributor cap. I can turn the crank more than 20* before the distributor rotor even budges! How much is just a guess since I am using the stock timing marks on the cover to see and it is WELL beyond that before it moves.

So, aside from bitching, anyone else thing a timing set might be in order?

sb