600 edelbrock secondary bog.
$400 for a brand new lemon doesn’t sound cheap. Have no idea why y’all being so anal I figured you might have answers. I’ve got new heads, new cam, timing set distrib, wires plugs coil the works trying to work out this issue.
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.
Anyways, give us a little more info on where you are at, and what you have tried with these carbs. A little more information, would help us help you. Many time there may be an issue with something else. A lot of times we blame the carb, and it is the ignition, and vice versa. I would make sure the carb is box stock to (springs,rods,jets,etc) and make sure the floats are adjusted as well, plug both vacuum ports. Then give it another shot. Another thing I forgot to mention, make sure there is no vacuum leaks.