Over heating questions

Couple things just food for thought but sounds like your car is in pretty good shape...I agree. Run a 180 stat. Ditch the 160. Engine efficiency/ thermal efficiency is what it's about. Some other ideas...

- swap to Evans waterless coolant

Read here - http://www.evanscooling.com/

- maybe try a clutch fan? Free up a little power?

- check your water pump. Is it the heavy duty cop style with the ribs on the mounting base or just smooth? Just a thought to check. Or try a flow kookier pump. May help stabilize things that much more.

- check your cap, probably fine but always worth a check if its older

That being said...getting up to 210 in stop/go in that climate as mentioned isnt for concern. Especially if it recovers once moving again.

As well I've run up to 240 plus and not had a boil over issue. These old iron headed motors are pretty tough and resilient...