It is the elimination of items such as this that are contributing to the flat tappet cam/lifter failures. Some types rods/engines used these notches, some types used squirter holes in the upper half--you need the
oil off the big end of the rod to
oil the cam/lifter area, distributer gear, and wrist pin bushing/small end of the rod-have any of these situations bitten any of you guys???
Go and read my responce several days ago about flat tappet/cam failure
Jerry