Rocker Clarification is up!!!

[Sean Marconette]

This is still confusing, as the 2012 rulebook still states that guide plates can be installed, and the new rocker rule goes against that statement? Any thoughts Travis?

CAMSHAFT/LIFTERS

Camshaft must retain stock lift for horsepower claimed per NHRA
Technical Bulletins. Front-wheel-drive vehicles and stock trucks,
maximum lift is limited to .430-inch or OEM, whichever is greater.
Aftermarket OEM-type replacement lifters permitted. Lift checked at
valve retainer, with zero lash. Hydraulic lifter cam will be checked
with pushrod and rocker as run, plus solid lifter, at zero lash.
Plunger height of checking lifter will match extended height (no
preload) of hydraulic lifter. Hydraulic lifter may not be plugged or
bottomed. Aftermarket gear drives/belts prohibited. Aftermarket
timing covers permitted as long as OEM-type timing gears are
used. Adjustable pushrods or adjustable OEM rocker arms (not
both) permitted; must be same or greater weight as stock. Pushrod
guide plates permitted. Cylinder head may be clearanced for larger diameter

pushrods.

Sean