I have rebuilt the vacuum pump and the car is running well. I appreciated the additional diagnostic suggestions but the diagnosis was confirmed when I removed the vacuum lines at the pump and they and the pump were dripping oil. Once I got the pump apart there were two slices in the diaphram where oil was getting through.

I learned or relearned some lessons on this job. First, one that my Dad taught me years ago, always turn the engine over by hand before using the starter on any job that has mechanical connections. After rebuilding and reattaching the pump I turned the engine over by hand and it bound. The trouble turned out being the screw that attaches the vacuum pump diaphram. The replacement that came in my rebuild kit was a little longer than the original and was causing the pump to bind. Which leads to the second lesson, make sure all parts are exact matches before installing them. Don't install if they are not exact. A third lesson was that on these older cars, if you can remove the flathead screws that attach the diaphram, the pump can be rebuilt by leaving the main body of the pump on the car and just taking off the diaphram and check valves.

I do want to say thanks for everybody's help and suggestions on this job!