Head Bolt Hole Crack Repair with Lock-N-Stitch Full-Torq Thread Repair Insert
This is a big block Chevy engine block that had a crack from a head bolt hole to a coolant jacket hole. We repaired it by machining the head bolt hole for a Lock-N-Stitch Full-Torq thread repair insert. The Full-Torq inserts have a special angled thread on their OD. The special thread actually pulls the [...]









