Ali,
On the freeway grades, I will hit 200*-207*WT and 140-150*IAT (around 3000rpm, kicking up to 4400rpms when it downshifts)
it will immediately go back down to 192-195*WT after the climb.
Offroad, anywhere from 183-193*WT. 140ish*IAT
The engine did not seem stressed in these situations
the biggest concern for me is going up a freeway grade, AC on, loaded w/gear. This seems the most stressful event- constant load, high rpm.
The airbox is all metal- would heat soak eventually bring the temp back to un-insulated range within a few hours of driving?
this is also an idea why things are getting hotter in a lifted truck-
http://forum.ih8mud.com/showpost.php...6&postcount=13