426 Hemi with stock rocker arms and Erson 278/370 solid roller cam. (238@.050 573/566 lift)

Machinist set lash .012/.014 cold. I've read as tight as .011/.013 hot is good, although cam manufacturers always seem to suggest quite a bit more.

So what is everyone running out there and does it make a difference running stock rocker arms vs A/M?