She is idling pretty fast. Sorry no tach. I sprayed Berrymans at the base of carb, There was not a change in idle. I closed the idle jets and she ran but rough. I didn't think that was right. It should of died, correct?
First the damper does not have timing marks. I have played around enough to mark a spot on the intake to line up to so there is not pinging. I am assuming this is the max timing advance she likes. When I tune I get the vacuum as high as I can, around 20. At max vacuum the timing is always to far advanced. Then I check for the mark and back off timing to the mark and listen. Vacuum is usually around 19.0 - 20.0. When I adjust the idle jets I use the vacuum gauge for max vacuum. I do this in conjunction to the timing. I keep tweaking until timing is at, or near mark, and idle jet adjustment pulls max vacuum. When done vacuum is usually at, or near, 19.5. The main idle set screw (on side of carb at linkage) is all the way out. 1957 292, Holley 570 CFM 4 barrel, ECZ 9425-B Intake, 1957 distributor with Pertronics electronic ignition
Any ideas.

Buz