Blew rear freeze plug on 408

Yep, I use spray hightack, seems to work good. I take a piece of cardboard cut a hole the size of the plug to cover the block and spray the hole and the plug and pound it in.
I have never had one pop out using it. I blew one out on a 383 in the back of the head on the right bank at about 7500RPM. Had to pull the head to put it in, the gasket looked good so I pulled the left side and that gasket looked good also. Been using hightack ever sense.