Originally Posted by johnny248
I've never been a fan of lowering t-stats on an stock engine unless it really needs it for some reason. Although engineers tend to do things that aren't always necessary, something like cooling and operating temp must be set up that way for a reason.
That being said, would there be any issue with a 190deg t-stat? somewhere in between the 180-203 options. Again, I don't know if there would be any reason on an '11 style truck. A lot of guys SWEAR buy their 180 stats for better performance and better fuel economy...
I too would like to know if there is a 190 or 192 degree thermostat that will fit in a 2013-2014 5.7 hemi that will still make the computer system act correctly as the engineers designed it to.