Rocker adjuster

running Hughes rockers, solid roller, PAC springs
[email protected] 580lb open
I threw in the old smith brother pushrod and at zero lash the adjuster has about 3 1/2-4 threads showing. I know they say around 1.5 threads is optimal but what do y'all think?

Are a new set of pushrods in my future?


Yep. If the rockers have Chrysler oiling the actual measurement is 9/32. The measurement can be slightly less than 9/32, or longer by as much as .050 maximum.

So .287 minus a little or .287 up to .337 per the Chrysler engine book, page 217.