Vavle lash
The theory is, it depends on the engine configuration, and whether the block and heads are iron or aluminum
Even so, I like to set them "a few loose" regardless.
One set of figures I found says
With iron block, iron heads, add .002
with iron block, aluminum heads, subtract .006
with aluminum block and heads, subtract .012
I use the "EOIC" method, which means:
When the EXHAUST valve starts to OPEN set the intake for that cylinder
When the INTAKE valve opens and is nearly CLOSED set the exhaust for that cylinder
If you can mark the dampener, Mopar puts out this handy chart:
http://www.moparts.org/Tech/Archive/motor/img/egspvl.JPG