I agree about getting rid of the pusher fan.

200 will not hurt a thing. It sounds like you havea fuel line to close to the exhaust and when you are sitting still it is not getting enough fresh air blow through that area to keep it cool. This can also make it run lean and that can make it run hoter.

Also what percentage of antifreez to water are you running? Too much anti freeze reduces cooling ability. What Idle RPM? Where does the carb get air? Are you useing stock ratio pullys?I have a 4cyl 2.2 K-car fan on my cuda and hardly ever do I have to turn it on even at *90F. Only when I idle at the line at the bank for a long time, then is the only time I turn the fan on and the little 2 blade low rom fan cools it right down to 195 in nothing flat. I have a 195 T-stat. I used a laser temp gauge to find the hottest part of the radiator and put the fan directly over that area since the shroud only covers part of the radiator.