Newbie thinking about diving into a '65 GMC 1000

[Praxiss454]

Originally Posted by jtrichard

I could be wrong but you might be thinking to "NEW" what you described "no vacuum" at idle is ported vacuum thought that was like 70s?

I'm no expert here, but I believe my Rochester Model B only has one vacuum outlet and it is ported, so that at idle, it doesn't advance the distributor. Otherwise I have another problem because if I disconnect that vacuum line from distributor and hook it up to a gauge it pulls zero vacuum at idle.

So I'm thinking either I overlooking a vacuum outlet on my carb, or when it says "manifold vacuum", it means I am supposed to have a vacuum connection somewhere on my casted intake manifold, which I am unable to find.