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Original Message
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| More on Offenhauser intakes |
| By John - 12/29/2004 10:29:57 PM; IP 142.177.99.152 |
| Do a search on the dual carb set-up in this forum. I wrote at least one letter detailing it it. Basically, 1 carb does all the work till about 1/4 or maybe 1/3 throttle (I forget which) and then the other one starts to open. The belcranks are setup for both to end up open at the same time for wide open throttle. 600 cfms are good. Vacumn secondary's need to be connected between carbs for synchronous secondary operation. Primary idle circuits always run, so it will be rich at an idle unless you modify carbs, even with adj screws all the way in. Pony Carbs can do this for you, but is expensive. One of the SD Holley books explains how to do it cheaply. |
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