[tomshep]

That one port looks like it had water sitting in it. Due to that I would pull the heads and pan. Gaskets are cheap and lets you see the condition of the motor. If all looked good clean and put back together. If you pull the rod caps and mains and find a bad bearing you will be glad you took the time and were willing to spend the money instead of going through the work of putting a bad motor in the car and possibly doing a lot more damage.

Tom