What makes a SVDA distributor less terrible than the 009? Options

[Tdskip]

I know there’s about 1,000,001 variations of the distributors on these cars, and I’ve also read here that the Pertronix Distributors are clones of the much hated 009 distributors. Is the SVDA unit they sell considered acceptable because it has a better curve than their other units?

D186504 Flame Thrower distributoR

Thanks!

[nditiz1]

I know there’s about 1,000,001 variations of the distributors on these cars, and I’ve also read here that the Pertronix Distributors are clones of the much hated 009 distributors. Is the SVDA unit they sell considered acceptable because it has a better curve than their other units?

D186504 Flame Thrower distributoR

Thanks!

So the SVDA, like the one I'm selling is better than the 009 because it smooths the acceleration. Although it should be understood it is in fact the same curve as the 009 with an added bonus. It does this because during the transition from the idle circuit to the main circuit with carbs the mixture starts to go lean. When your mixture is lean its good to increase timing. The vac pod on this setup does this. You can, and a lot do, bypass the 009 "flat spot" by richening up the mixture with bigger jets. With the svda you can keep your accurate jets, but create no flat spot. With light throttle and the teetering point between idle and main the svda jumps the timing higher than the 009. When you open the carb butterfly more and pretty much erase the vacuum that exists it will bring the timing back to its full advance, 27-28 degrees. Hope that helps.