Quote Originally Posted by JD1964 View Post
Only one of the water pump mounting holes in the block passes in to the water jacket. It's the lower one on the drivers side. I'm putting PTFE sealer on the bolt threads for that hole. The way I see it, the other bolt holes don't go into the water jacket so they don't need sealer. I'll use a skim coat of RTV on the flange gaskets.

Sound about right?
Yeppers, sounds correct.