GT40 Head is leaking out of the hole pictured. It's at the back on the drivers side. It's leaking coolant as fast as I fill it with coolant. I've looked for cut-aways or diagrams for the GT40 heads and passages to find out whether or not this hole was at one time plugged and part of the water jacket? Or if it should be AIR only and my head is cracked internally? I've done a lot of research and found only comments about the larger freeze plug doing this.. please help me solve this problem. I've found threaded plugs to thread in. But would like to know why I'm suddenly leaking coolant when it never has before..??
Thanks for any help!
It's also been a long time since I've been around, please no bashing me...family, schooling, and career end up taking over..also, the mustang has been parked off and on for quite some time.