Pushrod length help!

If these are the "Cat" stainless rockers make sure they have the bronze bushings and then if you look at one of the "adjuster" screws you will notice that they have a undercut{missing threads} about 1/3rd of the way up. When you make your mesurement be sure that the "undercut" is centered in the body of the rocker as this is where the oil is fed to the push rod end. Most aftermarket pushrods will be hollow to alow "pushrod" oiling and this will help also. Don't be afraid of to much oil in the topend as oil is what cools the springs and cool springs last longer.
For my "360" I found that "GM Ls1" poushrods were the Ideal length. 7.40" of corse every engine is a little diffrent.