Thanks Bob.

I jacked the nose of the car up high when I filled it, and made sure the block was full to the t stat first. I hope I have the air pockets out.

I did however fill the radiator up nearly even with that inner drain tube. I really didn't pay attention at the time as to what the tube was.

From what you are saying, it should run a couple of inches below that tube level to give room for expansion, etc.

I just wish that overflow tube had enough of a nipple on it to run a catch tank, but then again there is really no room for a catch tank, unless I mounted it in front of the radiator and made it look cool too.