Optimal Coolant Temps Question......

[legotech7]

I have a 70 C10 with a 350 eng and 350 trans. My temp gage reads 210 degrees when its warmed up and stays at that constant temp, If I go out for a ride for an hour or so. Is that temp range optimal for that engine? It s seems to me it might be a bit too high, am I wrong with that assumption? It runs fine with no ill effects, or should it be a bit lower, say at 190?

Any help would be greatly appreciated... Thanks......