Trying to daily my R/T in this heat has me worried. I have a 35 mile drive to work, and the car is running hotter then I'm used to. With the A/C on it will get up to about 3/4 on the gauge, at which point I will turn the A/C off and run the heater on defrost to help bring temps down. I have a manual switch on the fan and have been running it constantly, but it doesn't help keep the temp from creeping up. But at low or no speeds I have no trouble keeping cool, in fact today I had the a/c on and the car idling for almost 30 mins in the parking lot, and temps were low and fine. Car is stock except for exhaust.
I've installed a new water pump, new 180 degree thermostat, new radiator cap, new lower hose, and fresh anti freeze, about 60% water, 40% antifreeze. Cooling system seems fine, no leaks, builds pressure, etc.