I have a old points dizzy with pertronix... Do I use the timed vacuum port or the manifold vacuum port on the edelbrock carb ?
I have always used a ported line off the carb, meaning a port that didn't open until about 1000 RPM's.
Everybody seems to say run the ported line but my car ran a lot better with manifold vacuum hooked up. When I had it on ported it always seemed sluggish out the hole. Did the same thing on my roomate's mom's jeep J4000 I'm working on. Edit just found this so unless you have emissions hook it to manifold http://chevellestuff.net/tech/articles/vacuum/1406_edelbrock.jpg
