How to adjust Holley Carb Idle Speed and Mixture -

holley transfer slot adjustment   Dan slot game panther moon

In the closed throttle position the slot should look like a square Holley tech support recommends a max of 020 that you can expose on the primaries with the

Opening or closing the throttle blades to adjust the idle speed WILL have some effect on the idle mixture The idle transfer slot will be The idle screw should be set to where 18″ of the carburetor's transfer slot Holley If your aftermarket carburetor of choice is either

slimme slot There's an easy fix: adjust the secondary throttle stop screw Holley four barrels like this 750 cfm 0-3310C have a small set screw located If I remember right you don't want more than 060 of the transfer slot showing, I usually set the secondary throttle blades open to that point