Howdy Back Jerry:
Wow!!! This is a trip down memory lane. I used a '68 distributor on my stock '65 200 back when I first got it, a long time ago. The 1st frustration was it didn't work well, at all, when the vacuum was hooked to the SCV source from the carb. I switched it to full manifold vacuum and too much advance at high vacuum conditions. The 2nd frustration was when I switched to a '68 Autolite 1100. It was down on power. FYI, the '68 & '69 Autolite 1100s don't have a SCV. They have a ported vacuum source, compatible with this distributor, but they are down 35 cfm due to a smaller venturi insert- 1.2" vs 1.1". I found an Autolite 1101 from a '69 250. It is rated at 215, up 30 cfm from a stock '65 1100, and no SCV but the correct ported vacuum source for the distributor. WOW!!! When all the parts work together it helps!!!
When you say that the vacuum advances 22 degrees are you including the initial advance setting in that 22 degrees? What are you using as a source for your vacuum to the distributor? What carb are you using?
This distributor is adjustible, but it is done by adding or removing washers, or spacers in the end of the diaphram housing rather than the Allen wrench as used on DS IIs. To access, remove the nut on the end of the diaphram housing. You will find a gasket for the nut you removed, calibrating spacers (washers). You may also have a spring with a stop inside of it come out, so be careful to not lose anything and put it back together in the same order.
To adjust, add or remove the spacers/washers. More washers/spacers decreases advance, fewer increases vacuum advance.
Thanks for the memory trip.
Adios, David
