This is from a 6.0 book but like Shane said I cant find it in the 6.4 book anywhere. I stressed a little about it during my build on a few. I took pics of them but there were a few I could not tell about. There was no common pattern on mine, like intake being one way and exhaust being the other. I have done 3 6.0's and no pattern on them either. I think they are just saying because it has wore to a certain pattern it should go back the same. On all 3 of the 6.0's I have done I did put them back exactly like they were.
There is a thread about it on here or psn somewhere, some said it matters some say no, I dont think its a big deal but im not a very smart man...lol
• The rocker arms must be installed in their
original position during reassembly.
• The valve bridges that connect the two (2)
mating valves must be installed in their
original position and orientation during
reassembly.
• Note: If the rocker arms and/or valve
bridges are not correctly installed,
premature valve train wear may result.
