Unless you have a high flow thermostat, a high volume pump will not pump the volume it could, because the thermostat is not a high flow unit. I agree with Oldmanmopar on one hand. 210 isn't too hot. It is however "on the way" considering outside influences such as traffic jams, humidity and hot days. At 210, there's not enough of a "cushion" for circumstances outside the box, like those described earlier.
On the other hand I also agree with Newcomb Turk. (what a dorky name) lol A performance engine doesn't have to run hot. In fact, I took several of his recommendations when I was tuning my HP slant 6 and every single one of them helped and ultimately I solved the issue completely. Now the engine never sees close to 190 degrees. People argue that's too cool, but if the engine is TUNED for it, that's the secret. Any and everything you can do to keep the incoming air and fuel cool coming into the engine will help it run cooler and make more power, too.
