Man, all of you guys are great. I was not expecting 'a' reply so fast let alone 8.
I did exactly what most of you guys suggested. I had the timing set (checked) by a pro and it was dead on at 12 degrees. The mechanic adjusted the carb with a vacuum gauge and that is now right. The idle speed is set now at 800. It was 850. The 'dieseling' still exists. I had a thought about the cam. The motor is new, a comp cam was installed. I tried today to contact the installer to see if he degreed the cam for performance or just aligned the marks. With a Comp Cam, I found out the aligning the marks gives you a 6 degree advance when setting the timing mark at '0'. So if I'm thinking right, the 12 degrees I have it set at now, is actually 18 degrees. Would that make sense? If so, the gentleman that stated to cut the timing back to 8 for starters may be right. That would give me 14 degrees and will tell something. I may try to set it back to 6 degrees, which will give me 12. I have a friend that races and I know he has one of those real fancy timing lights. The ones that shows the advance and a lot of other info all digitally. I prefer simple but I want this car to run as good as it looks. Since you guys have tried to help, I'll keep all of you posted. I'm not sure how to do that yet as I'm very new to this type of help system. I'll figure it out and make sure you all know how I make out. Also, as soon as I can get some digital pics, I'll post them. I am pretty proud of the car since it took 30 some years of dreaming to get to this stage. Thanks to all for all of the suggestions. Most are not what I would have thought about. Sincerely, Jim