starting up my 318 after nine+ years....

If it turns freely. and I mean very free with the plugs out you might be ok. There are a couple of times I wished that I had pulled the heads and cleaned up the cylinder walls on a dormant engine. They create their own little eco system in the cylinder where it rains, evaporates, condenses. This cycle will take out a cylinder. I had a nice 440 that will now have to be bored before I can use it.