70duster 360 gets hotter the faster i go

OH boy. I have got to learn to type faster.
Before you get started on anything from my previous post, you need to repeat a test.
I see you posted some temps while I was banging keys.
You see where you posted rad core temp of 135* to 150*. But the lower rad hose is at 185*. If thats accurate, there is a problem, hence the request for a repeat test. And the pump at 195* that may also be a problem.
Either the pump is not circulating properly, or .................The belt is slipping, or the ratios are wrong, or there is a restriction in the rad at the outlet spout, or in the hose.
The rad is working. a temp drop of 65* is pretty good(200-135)
So repeat the tests. If results are the same, then check the belt, and the wp drive ratio(pulley sizes). if those are good, drop the lower hose and check the rad and the hose for restrictions. If none its pump time. My Milodon hi-flo is 15 years old.
Now having said all that, I stand 100% behind my previous timing statements.
BTW, you done good with posting a ton of info.