Get a laser heat gun, aim at the bottom, middle and top of rad. Check hoses waterpump, just about everywhere water flows. Bottom of rad. should be cooler than the other spots. 210 is not bad but should be around 170-90. A buddy has a 65 Hemi(472 iron) with no shroud,4 blade fan and it never goes over 170, sounds like you have some issues in the engine, maybe cam retarded a lot, not a clean combustion, timing off, what do the plugs look like?
One thing I foggot to add, the engine will not run cooler than what the temp. is at bottom of rad. So if your rad says 190 at the bottom, it is circulating to fast or stopped up.