new 160F thermostat is in, i drilled a small bypass hole in it and the truck runs great, way cooler than before, now i just have to re-flash the pcm with the new fan control temps

thank you to everyone who replied, all great info, i would also like to thank the ppl who examined and corrected my tune file I will test the fans soon,

Hi tlr, so several reasons for the thermostat change:

the engine oil, transmission oil and coolant are tied into the same radiator so everything then runs hot,
im running a cast iron big block...

Hi Guys, I'm changing to a cooler (160F) thermostat and would like to know what temperature range to set my cooling fans to? I figured that a good range would be 170F on and 155F off, with about 45...