typed that wrong....I mean I measured using a couple of adjustable pushrods meant for measuring the proper length to use from lifter cup to rocker socket for the non adjustable rockers and I also used the measuring pushrod for proper length cup and ball type pushrods needed for 273 type adjustable rockers. For the adjustable rockers I had a set of pushrods made by Smith Brothers. The factory stamped rockers needed factory length pushrods and I have those as well.