Hi all, been lurking for a while and gleaned a lot of great information but finally realized I better ask for some help. I know this subject has been talked to death but I need a vacuum diagram that shows how my truck should be setup. I've looked at mil1ion's docs, read the many posts related to this and looked through most of the stuff Autozone has but still don't see anything that looks like what is currently on it. Here is the info I have:
Calibration sticker is still on the engine but difficult to read. I'm pretty sure the relevant areas say "61G" and "0" If I understand correctly that should make my calibration code 9-61G-R0, right? I found a diagram at Autozone for 9-61G-R0A but it looks nothing like what I have.
Other, possibly relevant info is as follows: 1979 F250 Custom 4x4, 400, manual trans, no A/C, Fed emissions (MN) and has a Cat.
Some history that may make a difference too is that this is its second engine. The same dealer where the truck was originally ordered from installed a Ford factory rebuilt 400 around the late 80s/early 90s. I messed this up pretty bad myself by disconnecting things and not having the forethought to mark down where it all was supposed to go. Any help is greatly appreciated!