another 360/408 over heating

Blindsquirrel, I actually have a pressure tester so I will check that next week. I was going to do it a little different. I'm waiting for a friend to return my cyl leak tester (only been 2 months since borrowed) and I was going to do that but I could also pressure test coolant system that way as well. I also plan on running compression test.
Yes, my block tester was a positive test and that probably spells bad news. They seem to be fairly accurate.
Just so you know, I spent 3 years at a dealership, worked as a mechanic for my dad for 15 years and owned my own shop for another 10 years until my body couldn't go anymore and i sold out!
This is my own car and I find those problems on your own car are harder to accept and sometimes you dont think straight when tackling your own problems!
Hopefully i will have some solid test results by end of week and then decide what to do.
Thanks for your help, i do appreciate it. Stay tuned!
Rod