Are you the same person that had some work done by Herb at Star Motors in Ventura?
But 180C is very high. . . . if you meant "F", then that's very low!!
The car shouldn't run over 90 - 95C if the cooling system is "working" ok. From the temp you see something (or a few somethings) aren't working.
If it's the ORIGINAL rad, it's probably toast! Check out menu #17 for tips
here