I did tune it with a vacuum gauge
It's been running with a 160* stat for 4 years.
The car has A/C if I run a higher stat the car heats up very fast at slow speeds with the A/C on. This gives it a fighting chance.
That factory ran 160* stats in a lot of engines combinations with modern day oils it's not much of a problem.
I dont recommend it for everyone but for this iron head engine it works.
