I appreciate your thoughts and comments. That's what I was looking for. There were several applications that Ford used an external oil cooler. I have a PI 460 that came with one and if I'm not mistaken the 429 SCJ. came with an oil cooler.
Just building a new engine and don't know what it...
Thanks for the replies on the threaded freeze plugs. Most of us agree it seems that if you blew a push in you may lose a motor
before you figured out the cause. Charrlie