Not sure what you mean by anal, but your post is kind of confusing. You start out by kind of asking for help, then lead into a tutorial on how manifold vacuum works. Adding, " I'm sure few here no how ported vs manifold vacuum works". Not a good way to get help. It seemed more like you know how this is done, and I have done it all, and now all I have now is junk carbs. I didn't even realize you were asking for help.
Having said that, most of the Ede carbs I have played with, bolt on without any issues, and are generally easy to tune. Most the time I turn the a/f screw out about 1 1/2 turns and burn rubber down the street.I start out with a box stock carb & settings so i know what I'm starting with. I also always use the "Ported" vacuum side, or go with no vacuum advance, and plug the 2 ports. This is actually, the best way to start. Take vacuum advance out of the equation.[\quote]
only reason I mentions the vacuum this is after a long discussion I had with an engineer from GM who took part in the manufacturing of these systems.
well im running eddy rpm heads, stock replacement dist., 74 thermoquad intake. Solid vacuum at idle 21hg.
Silver springs, stock calib on primaries 1 stage lean on 2nd. I bought the avs2 thinking a stock new carb might prove the issue was the old carb after a friend rebuilt it. same problem. Spark is good, but have noticed an occasional miss leading me to want to try another distributor. plug wires test good.
tried both an open bore spacer and a 4 hole intake adapter thinking the openings on the underside possibly could be a vacuum leak. Air fuel ratio gauge reads about 13.5 at idle but varies significantly, at wot after the bog is over, it’s still way rich at 9:1. If I wrap on it in the garage in park, if you hold the pedal down long enough she will backfire through carb, exhaust, or both.
