360 magnum engine with Holley carb and dual plane intake, stock electronic vacuum advance distributer, and everything else is stock. Every port of the carb has vacuum at idle so there is not ported vacuum only manifold vacuum. If I hook it up to the carb it will advance the distributer at idle so my vacuum advance won't work correctly. If I can't get the vacuum advance to work correctly I will go get a mechanical lean burn distributer and put it on the car. I can't afford a high dollar mechanical distributer right now.
