'66 Valiant Running Hotter than Expected

inertia said
Just trying to get something substantive to start process of elimination.
Is it really hot, does the rad shed sufficient heat, is the rad plugged with bugs, does it have a partial plugged core, bottom hose sucks shut closed on high rpm, - stuff like that . lol

Haven’t followed my build threads I see! My cars are spotless show cars. Bugs are not allowed to remain after each drive. No expense spared restorations with as much OEM stuff I can find. The radiator hose thing I’m my opinion is a bit of a myth. They did that back in the day because they pulled a vacuum on the system in the factory to get air out. Hoses today are much stiffer as well (again I’m fussy and only use the best I can find in todays world. Dayco and Delco are the best most stiff hose I can find)