As promised I am again posting with an update on the issues that I have been experiencing.
As far as cam timing goes. What I have is identical to that shown on the engine in Mart's attached video, (as seen between approximately 18 min and 22 min in the video). I have verified the exhaust valve movement with the dial indicator shown in the attachment.
https://youtu.be/dn446jjCVR
He is demonstrating valve action on an earlier engine than mine, but it does look like a "crusty" old original. Also, since my cam was reground, I'm not sure what settings were recommended by the cam shop. As I may have previously mentioned, the original engine builder has passed away.
On previous posts, I have mentioned how slowly the engine turns over on 6 volts. When checking the grounds and the cable at the starter lug, I noticed that the starter case was stamped "12 V ". As a result, I connected a 12 V battery to the starter side of the solenoid leaving the "key" side connected to the 6 volt battery, then turned the key to the " on " position ( not using the "start" feature). When the starter was activated by directly connecting it to the 12 volt battery, the engine turned over rapidly. With that setup, repeat compression checks resulted in readings ranging from 78-90 PSI.
In spite of this, there was still no firing. I next checked the intensity of the spark which was regular, but very weak. It would only jump a gap of 1/16" when the center coil wire was held near a head bolt. I located a FoMoCo set of points and condenser and added another ground from the engine to the frame with no change in the intensity of the spark. I have a NAPA. Echlin coil coming next week to use in place of the "off shore" coil that I now have. The distributor is an unmodified, cast iron type LoadoMatic with the cast iron timing cover. We'll see if that helps.
BTW, the carburetor is squirting fuel when the accelerator linkage is pumped.
All very frustrating. Looking for any and all suggestions. Thanks to all who have contributed their knowledge and help thus far.