Vacuum Secondary Conversion

340inabbody said

Did not mean to offend you. Typing my thoughts isn’t always very easy for me. What I meant was that I might already be able to trade my current mechanical double pumper for a friends vacuum so I was focusing on what to use with it ie possibly either one of the distributors I posted above.
Are you saying that given many of the constraints I listed regarding my set up that the carb can be tuned to get drivability to be as good as a vacuum set up?
If so I would like very much to understand how. I really don’t want to change over if I don’t have to. Please elaborate!

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I'm not offended at all. You asked for advice. I was giving it. First off, you have to have a carburetor that is tuneable. All of them are not. They must have replaceable air bleeds on top, replaceable idle fuel restrictors in the metering blocks and replaceable power valve restrictors. It also helps to have replaceable emulsion bleeds, but usually, you can get there without those. If you have an older style or cheaper carburetor without all of that, you can modify it, or have it done, but it won't be cheap. So the best thing to do is get another carburetor. That said, you're dead set on a vacuum secondary and that's cool. Do with it what you want. It's your car after all.