I could use a 1974 slant six manifold heat control valve expert!

cruiser said
Merci, Francois. Your comments were indeed helpful!

You are welcome :)
If needed, you can download the 1970 FSM here, on my cloud :
https://mega.nz/file/glYCyBgQ#QA9a93-3LlZ1jMhnjPSNxYS1hlqfQrFGy_5zqkMWT6E
François