The problem is solved. First, all of the exhaust valve guides were leaking, the #8 cylinder was the worst. They were bronze. We were told that on big block heads, for some reason this tends to happen with bronze guides. We replaced the guides with steel ones. Block, heads, and head gaskets were checked and were OK. The motor was put back together and it cooled much better, but still had a little trouble. We took the electric fan off and bought a non flex mechanical fan. We had a custom shroud built and it completely solved the problem. It just sits at 185 when the car is moving. If you stay in one spot idling for a long time it will creep up, but if it is driven for 1/2 a block it drops back to 185. I think a larger radiator would solve that but I am happy with how it does now. Thanks for all the help.
Adam