Hey gurus.. Got a question about the optimal cooling for my truck.. 89 Suburban, 350 4x4. Alright, It runs right right on the thermostat temp (190) about 95% of the time... However, on my commute home I have this pleasant 5-55 min wait to cross the bridge back to the US from Mexico (mind you we are already nearing 100deg days here) and if I'm running the a/c the temp gauge will just slowly climb and climb until I turn the a/c off... Current setup; Stock Fan flex-fan New HD fan clutch New Waterpump New 4 core Brass Radiator 190deg thermostat (also new) Stock shroud (slightly modified to fit the 4 core) Water wetter & new fluid... Now... My questions are... WTH is this thing still running hot?? And more importantly, how do I fix it? Elec fans?? (assuming a higher airflow at idle conditions) I hear rumors of a 7 blade fan, but can't verify if there are any for the serpantine belt setups.. Anyone? Since it's ONLY when the a/c is on too, and I know a/c doesn't help, but is there something that could be wrong with the a/c that's giving it too much load?? Dangit, I need my a/c! It's getting hot here! Gimme some help guys!