Unsticking an unused engine........

Typically you will find that only two of the cylinders are stuck (the one with an open intake valve and the one with an open exhaust valve), prop the engine so you can soak the cylinder with Marvel Mystery Oil. Let it soak for a week and try rotating it with a breaker bar. Go both ways.

It took me a couple days of working it to get 6 cylinders moving, another couple weeks to get the last two. This was on a 440


Alan