by Donnie Hurt | Oct 8, 2024 | BLOCK WORK
I was never a fan of tapping a 1/2″ hole for a 1/2″ pipe plug which measures about .530 diameter. I’ve been using 9/16-18 set screws for the SB Chevy street and race builds for years. A 9/16” starting tap will work without drilling, and I finish up...
