Hi Sean, as I remember you were in the great white North where temps are not like here. We just had some 105* temps while rainingDo you mean the fan is enough with the stock radiator? Does this require me to send anything in for re-programming? I have EFI live but I don't really know much about programming with it.
The stock radiator can only exchange so much heat so the first step is go with the HD dual pass radiator and stock fan. This works well in most 5.3 and 6.0's if you don't tow. Don't go with a radiator to thick because the stock fan will not pull through it.
The next step is add the Pentstar fan, this will increase cfm from about 2,500 to over 3,500 cfm. This does require the fan tables be programmed into your GM ECM, we will do it for free if you have our kit.
Actually the first step should be to check the AC condenser for mud and debris. Also do not block the grille, I cannot emphasize this enough. No grille inserts, sink the winch, no lights or license plates to deflect air away from the grille and over the hood. I have LS3's here and in Phoenix running cool with the Pentstar fan and all sorts of grille obstructions but you can really hear the fan winding up. Remove the obstructions and the fan works less. You can tell if air deflecting over the hood is an issue if the faster you go the hotter it gets, this indicates the aerodynamic flow is being diverted away from the grille openings; and when you slow down the air returns through the grille.
Finally we have some extreme cooling solutions for Hemi's, or and V8, SC JK that will increase the cooling system capacity. Look for it soon.