Where to connect a chain to pull my /6

I'm still in learning mode..at least with Ah-mer-I-kan cars :)

took off the valve cover..no 3/8 holes..so they must be the two...

ian.

Ian,
You have the right holes. Theres only 2 of them on the cylinder head.
You can see them with or without the valve cover on.
I would remove the motor with the valve cover off. Its easier to get the necessary hardware on, without damaging the valve cover.