Firing order is 1,3,7,2,6,5,4,8 so if just the passengerside bank is dead then you'll have to suspect a fuel or base timing concern. Do you know if the plugs are not firing or are they firing but you are not getting fuel/air ignition on the compression stroke? I would perform a compression test on it if the plugs are firing for sure and you are getting fuel to that bank. Could be a couple other things as well. Any noise related to this prior to the dead bank? Were you driving when this happened or did it just not start one day. How many miles on the truck?