fuel pump eccentric on front of cam?

Locktite the bolt!
I was up to my headlights in snow
In my 80 power wagon making good progress when it stopped driving the fuel pump. How embarassing.a chevy dragged me out and home.had to load it full of firewood first.

Or make sure to torque it to proper spec....

I've built many small blocks and never used loctite on the bolts... I chase all threads with a tap and die before assembling and follow torque specs...