Thermostats - high flow vs standard flow - now I am confused

I run a Flowkooler pump and Milodon high flow 185 stat in my 383 with otherwise all stock cooling components. When the stat opens you want max flow. Don’t confuse why the stat is there. It is used to bring the engine to temp then regulate the flow. Even a high flow stat restricts the flow enough to allow proper cooling through the radiator, all other proper components considered.