New oil pressure switch doesn’t fit...318 LA

Thread repair compounds would be more suitable in some way, but IDK how well that would work with the top thread or 2 still apparently begin so intact. With that adapter, maybe JB Metal Weld would have been the way to go... take off the paint around there, and use JB to make that new adapter essentially part of the block. That is the best/easiest I can think of....

I'm going to see tomorrow how well the Permatex set up, since the 72 hour cure time will be done. If it's as rigid as I hope it is, I might try to go with it. Otherwise, JB Weld was actually discussed with the fellas at the parts store. I shied away from it because it seemed too permanent. I wanted to be able to remove and replace the switch down the road, but that was also before I found the adapter. I'm more comfortable with the adapter being permanent and not the switch.