I now have valve cover tube connected to the air filter and I'm pulling 10-11" of vacuum at idle and around 14" at about 3,500 RPM. I'm guessing at the RPM's because I have a hood tach and the hood isn't on yet. It is still dripping a puddle the size of a quarter after about 15-20 minutes of running. It seems to drip more at higher RPM's , so I stuffed my vacuum gauge hose in my dipstick tube. At idle, I am showing 1" of vacuum and at about 3,500 RPM I show zero. I guess at this point I can conclude that the rear seal will have to be swapped out again. I gave much consideration to a vacuum pump, but it seems like a very expensive band aid. The motor really doesn't need it as it is just a 500557 block with dished pistons, 6X-4 heads, a Perforer intake and WAY too much cam. It runs remarkably well for such a bad combination of parts and it does have a 10" converter to keep it idling in gear. I was planning to put a stroker rotating assembly in it next time I pull it down and send the heads out for work, but I'm thinking that I will maybe go crate motor when the budget allows.
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