Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - More Quadrajet Stuff-- Question about polished throttle plate
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Old 07-16-2010, 09:00 AM
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Do you mean the butterflies are polished? If so this is a mistake. If you look at the butterflies from the factory, they have a criss cross pattern on them, this is to help mix the air fuel mixture. Often the factory butterflies on the primary side are replaced when new throttle shaft bushings are added and they use smooth ones as a replacement. When I`m building a Quadrajet one of the mods I do is rough them up good with a file.
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