Seller notes

One new QFT 63-2, adjustable, secondary throttle shaft idle speed control bracket, with mounting screw. Allows you to easily adjust secondary throttle shaft opening & idle speed. Razor tune your 4 corner idle carb. You can truly balance primary and secondary idle opening easily. A great help when tuning big cam, low vacuum applications. Will fit Holley 4150, & 4150HP double pumpers. Also fits similar Barry Grant, Demon, QFT, Proform, AED, & many others. NOTE: This secondary bracket will NOT clea...

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