stock thermostat temp for 67 inline six?

[bryanw1968]

There are many variables that affect temp. As mentioned above, fan shrowd, thermastat selection, radiator size and overflow are very important. I had an autozone 180 in my truck and it pretty much ran between 189 and 191 all the time unless sitting. I recently replaced it with a performance thermastat(mr. gasket I think) and it made a HUGE difference. It stays exactly on 180 and runs much better. 180 is plenty hot for the oil but once you start creeping up to 200 I believe that's just too hot for these older motors.