Non adjustable rockers. Ok what do you adjust?

if you get the adjustable 273 type you will also have to get
the aftermarket pushrods for mechanical rockers/hydralic lifters combo.
i don't believe the 273 pushrods will work, (too long?). more expense...

it is possible to remove the lifter through the head but you must have some
patience. looking at the bottom of the suspect lifter(s) will tell you
if there is a lobe problem..at 5000 miles since rebuild there shouldn't
be any "adjustment" problems with stock rocker assemblies.