[noctunalz24]

what do i need to do to put 1:6 rockers i know you have to machine the pushrod guides but how much and what else do i have to do :guns:

 

[dave3156]

You need to deepen the "valley" in the top part of the guide. You take off about 1/4". On the back you can feel a ridge. Take it back to the ridge. Also you need to use adjustable rocker studs.

 

[v6h.o.]

GM adjustable 2.8L rocker arm studs #476530 need 12 of them.

and then do a zero lash adjustement procedure.

also need to take off the lower intake manifold to get at the pushrods to adjust them properly...