170 Thermostat?

It will not. It's a known fact the thermostat only controls the minimum operating temperature, not the maximum. The max temperature is controlled only by "the rest" of the cooling system. The thermostat has nothing to do "with that". That's why I said, study up on it. I wasn't being a smartass, either. It's factual information. Look it up. Read about it.

Well, I kinda disagree with you. On start up, the therm is closed so the engine, can, heat up. I understand what you are saying about the therm opening and cooling the engine, but with that much fire power, I will bet you a nickle I can get it down to 170 in the Tx heat. You on? If that is... I can find one. lol