SBC sheared pressed rocker stud replacement

One of the pressed in rocker studs sheared on this small block Chevy engine. The damaged rocker stud had just a few exposed threads left. Since the age of the studs was unknown (possibly original from the 1970s), I ended up pulling all of the pressed-in studs, drilling and tapping the heads to install 3/8” threaded rocker studs: Pioneer Rocker Arm Studs 850001 Clean the heads thoroughly to get all the shavings out before reinstalling! Forgot to get footage of using compressed air after the parts washer. The alignment tool is from Summit Racing Stud Removal Tool SUM-900136 Used Permatex high temp thread sealer 59234 00:00 Intro 01:28 Threading broken rocker stud 04:30 Pulling broken rocker stud 10:00 Drilling and tapping head 15:00 Installing new threaded rocker stud 19:50 Thread sealer and torque