I've had a very small, mystery leak in my cooling system for a long time. Today, I lost it's mystery and became a large leak. The rear, passenger side freeze plug rotted out in the 327. Looks like I'm working on that tomorrow.

It sits behind the starter, so that will be the first thing to come off.

I'm hoping to be able to replace just the one freeze plug. Since I plan to do a full rebuild soon, I will wait and replace the rest at that time.