Valve Train Geometry
Setting up the correct pushrod-adjustable lifter length can be accomplished using the Manley pushrod length checker # 42132. This is a simple plastic tool that you push down over the rocker arm stud until it touches the top of the valve stem. You then adjust the allen bolt in the lifter boss until the top of the pushrod touches the other side of the Manley tool. This easily produces the correct pushrod length & rocker arm angle. Charlie Yapp has a small O.D. lock nut to use to lock the Allen bolt to the lifter boss.
