[V8] Overheating

[CoultL at aol.com]

I am having some trouble solving my overheating problem down here in FL.  In stop and go the temp gauge approaches the half way between 100C and the top of the scale…with AC on or not.  I have installed a new German radiator and thermostat and it is still overheating.  In fact, the new radiator didn’t help at all…it behaves exactly as it did with the old one.  The electric fan works properly.  I thought it must be the viscous fan so I took it off last night and (with the aid of a few hose clamps and a metal bar) locked the clutch.  The engine still gets too hot.  The only other thing I can think of is that the water pump could be some POS part and does not flow as much coolant as an OEM unit would.  Any ideas would be greatly appreciated.  Thank in advance.  

-Justin Lewis