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 clear any type of external choke linkages. Must be used on a chokeless type carb. 

Manufactured from the highest quality materials.

Combine with other items & save on shipping.

Custom rebuild kits also available. The finest parts money can buy. Contact me for a quote.

25+ yrs. rebuilding & modifying Holley carbs. Hundreds of parts in stock. Anything you need, feel free to get in touch.

Thanx for looking ! ! !