Well I was able to get out there today and look at all my vacuum lines. I traced out everything and even replaced many of the hoses.
Please note that I have an open air filter and not the stock snorkel. Therefore, the lines to the TAC, TVS, yada yada, are not there.
Currently the setup is, looking down the carb from the from the front bumper and going clockwise,
3 o'clock position
- Huge manifold vacuum fitting leading to brake booster. Fitting coming off this is plugged. Can't remember where that used to go to, but its sealed tight.
5 o'clock position
- Small ported vacuum nipple connected to the CTO via two lines T'ed. I don't remember the numbering/lettering for these but from the same viewpoint, it would be the top-right and bottom-middle. (You can see the CTO in the lower left of the picture below.)
8 o'clock position
- Large carb vents. These tie back into the charcoal canister.
9 o'clock position
- Small ported vacuum nipple plugged. If I recall that's where you're supposed to tie into after the nutter for distributor advance. You'll see later where mine is tied into.
10 o'clock position
- Big manifold(?) vacuum source for the charcoal canister vapor return and PCV tie in.
12 o'clock position
- Manifold vacuum source for the vacuum breaker(?) connected to the choke near the old, unused WOT switch.
2 o'clock position
- Manifold vacuum source for the vacuum advance on the distributor.
Here is a shot of the intake/exhaust manifolds. I wasn't sure what you (85CJ74.2L) were referring to with the 2-piece gasket. At any rate, I sprayed all over the place with the brake cleaner and the engine never stumbled at all. So no leak???
Have I missed something guys?
Shaun (Sorry for the huge and ample pictures. I thought someone might be interested in close ups of the vacuum sources on the Carter BBD.)