I`m in the 180 min. temp. mindset for a street car. Chrysler determined 190 for my 72 440 iirc.
I`ve always heard engines need to be hot enough to burn off acetic combustion gasses or bad things can happen and condensation cheese will form under valve covers and in crankcase. Ewe.
Mt late model GM stuff is set to 200, maybe 210, I forget. That`s pretty damn hot.
Ram air can cool an engine down by 5deg. in continuous higher speed and rpm situations.
What say youins? lol