Vacuum pump for crankcase ventilation

[speED]

Below is a thread I started in a previous post explaining my problem. Another member suggested running a vacuum pump which inspired this new posting. If your runninig a vacuum pump on the street I'm looking for comments(is it worth it) as well as components needed - never ran one before.

Previous post:
I read various threads, there seems to be many opinions on how to provide crankcase ventilation. Some members have claimed that you should always run a PCV valve, engine will last longer and there is no negative effects. I like the idea of the engine lasting longer but here is my dilema. When I run filtered air on 1 valve cover and a PCV valve on the other attached to vacuum port on backside of carb cylinders 5,6,7, & 8 on my BBC become considerably/ dangerously leaner than Cylinders 1,2,3, & 4. Remove the PCV and all cylinders look exactly the same. Has anyone ever ran into this situation and found a solution.



Thanks,
ED