Well, I've settled on a Carter AFB for my blow through turbo setup, simply because I have one. I found a lot about the mods necessary, but nothing about referencing the needles for boost. it is a needle and jet setup unlike Holley's power valve, but it works in the same way; with a vacuum signal from under the carb.

Pretty sure this has to be referenced to boost, rather then vacuum, but I can find nothing about how to do it on the web, or even if it can be done.

Does anyone know?
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Discuss vaporizers

Go to Yahoo, Select Yahoo Groups, Select group called carburetedblowers its on there first page 6 or 7 groups down. When on site go to photos left upper corner go onto AFB mods photos, might help you

Also do a google on Studebaker R2 and R3 and Paxton. They used AFB's in a blow thru setup.