Probably about time-rocker adjustment

69FBCuda said
Typical adjustment would with lifter on the bottom of the cam lobe 1/4 turn past a slightly resisting while spinning pushrod. You can follow factory lash specs but I think you will end up close anyway. Warm engine.

That's dangerous information if you don't know for sure if it's a solid or hydraulic cam. We don't know and neither does the original poster here.