WHO KNOWS CARB TECH UPDATE

Here is a paragraph from this manual.

Quick Fuel carburetors have been calibrated to operate on a broad cross-section of engine combinations. While it is not possible for a single calibration to work virtually every conceivable application it should work on most engines and it willnot be necessary to make any additional adjustments and/or tuning. Should it be necessary to alter the fuel curve in ourHot Rod Series there is plenty of tuning capability available with changeable air bleeds, power valve channel restrictions,and idle feed restrictions.

manual,
https://documents.holley.com/199r11667.pdf