The combination of centrifugal and vacuum advance give the smoothest performance, a 3-4mpg improvement in your fuel economy on the highway, and a major drop in engine temps on the highway too!
Because we developed this SVDA distributor in the mid/late 1980s, then started selling them in quantity in the late 1990s, it is amazing that it took as long as it did for the copies to show up. This is the best of the copies.
SVDA stands for Single Vacuum Dual Advance (since it has BOTH vacuum and centrifugal advance, that's where the "Dual Advance" comes from). This Pertronix SVDA uses the same cap and rotor as the 009, so you may even have some tune up parts lying around!
This distributor is not custom tailored like our Flagship ACN SVDA, it's a "one model fits all" unit. It is certainly better than any 009, 010, 019, or 050, or other centrifugal only distributor you have. Note that this is designed to work with SVDA compatible induction, ie: FI, 34-3, 34-4, Weber ICT, IDF, Progressive, and Dellorto DRLA carbs.
Don't be a sucker and use that One Size Fits None "Uh-Oh-Nine". We feel the only nice thing about the 009 is it's inexpensive and simple, so it's nice to "keep around" in case you have a distributor problem of some sort.
The Pertronix SVDA comes with the Points Replacement Device PRE INSTALLED.
We have had repeated inquiries about SVDAs for 30 PICT 1 and 30 PICT 2 carbs. There is NO SVDA compatible with the 30-1 or 30-2 carbs, so your options are to either put a stock distributor on, use a 009 (yuck), or put an SVDA on in conjunction with a Single Port compatible 30/31 carburetor, since we have an SVDA for the 30/31.
This is a great deal for an "SVDA" distributor for you guys that just can't spring the $ for a Genuine Aircooled.Net SVDA, but this one still comes with our expertise, instruction, and after the sale support that is unmatched anywhere!