ASBug's autostick had a DVDA (duel vacuum, dual advance) distributor. One side of the vacuum pod was for advacing the timing, the other for retarding it. Adding the retard side to the unit was an early attempt at emmisions control. Because it made tuning the engine super hard, the retard side was typically plugged off and the distributor was ran as a SVDA (single vacuum, dual advance).
Distributors and Carbs were designed as a package. When one piece of the system gets replaced with a part that wasn't specifically designed for the system, things get a little tricky. Remember that all vacuum is not created equal. Size and location of the vacuum ports make a huge differance in the amount and timing of the vacuum. Some vacuum ports pull more vacuum when the engine is under a load with the trottle opened, some pull more vacuum when the engine is ideling. Some pull a little bit of vacuum, other pull a lot.
I know all that stuff, but I don't have a clue what goes where. I just know it matters.
If I need to know which port to hook which line to, I just ask Ret.Bugtech . . . He's been working on these critters since most of us were in diapers and he knows his stuff. Casey (ASBug) is well versed in autosticks. Between the two of them, you should have your Ghia shifting smoothly in no time!
