Speed Dragon· Aka Force Fed Mopar
Worse case scenario, you could have warped the valves on that side, in which case you would either need another head or have that one redone. I would check the EGR valve 1st though, it would make sense that the increased heat and back pressure could have blown it out. And a bad EGR will make it run like that. You should be able to just unplug the vacuum line going to and see if it makes a difference. If that is the problem it should clear right up when you unplug it. I don't even run run on any of my trucks, I just bolck it off with a plate.