========================================================== Extra! Extra! Read all about it! Get the latest weather, sports, and lifestyle news you can't afford to miss, all at a price you can afford to pay! Click now! caaa9eYb7yoMza/TopOffers ========================================================== Wally, I believe front and rear carbs both have idle circuits, mixture screws,and air bypass screws...so they must both feed the manifold at idle. Even the six packs used idle circuits, the factory set the screws and plugged the holes. I have a set of '59 carbs that appear to be set up to idle front and rear, but as you stated it runs on the primary rear barrels initialy...then the front primaries,then both sets of rear barrels. Hope this helps. Dan [Non-text portions of this message have been removed] ---- Please address private mail -- mail of interest to only one person -- directly to that person. I.e., send parts/car transactions and negotiations as well as other personal messages only to the intended recipient, not to the Clubhouse public address. This practice will protect your privacy, reduce the total volume of mail and fine tune the content signal to Mopar topic. Thanks! '62 to '65 Mopar Clubhouse Discussion Guidelines: http://www.1962to1965mopar.ornocar.org/mletiq.html. b7yoMz.