Tim,
Many thanks for the information.
One of the things we tried yesterday was to turn the distributor body so the rotor would line up with the #1 cap contact with the engine at TDC. Problem is after doing this, engine would not start at all. With the vacuum advance link the position of the distributor body is pretty much set but I understand what you are saying about being able to set the #1 wire anywhere on the distributor.
If you turn the engine to TDC and drop in the distributor, I assumed the rotor needed to line up with the contact on the cap that you have designated as the #1 contact. It appears that in my case, the rotor does not line up. If you turn the distributor to line up, I guess it changes the timing so much that the engine won't start. The PO modified the cap and the truck ran fine but obviously didn't really fix the issue.
Thanks,
Ron
