[70geeteeohh]

Originally Posted by JSuchma

Sure that is a fair deal. Just make sure all the internal passages are reprogramed for the duration of that RAIV cam, if you are going that route. If not, you won't have any idle quality.

So on an old school holley if you had a long duration cam and she was running fat you would keep the butterflies in the idle transfer slots and start small and drill holes in the butterflies to improve idle quality. Slowly increasing the size until it ran correctly. Demon carbs had this same concept manufactured into the idle-Eze adjustment of their carbs.

This isn't how a quadrajet works as well?

[JSuchma]

All the 69-70 ram air Quadrajets had the idle bypass air holes drilled in the throttle blades from the factory. The idle fuel and air passages are found internally in the body and need too be resized as well on a non ram air carb.