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Old 06-20-2006, 07:36 AM
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Secondaries on a Edelbrock 650 Thunder

Need some advise. I just put a new Edelbrock 650 Thunder with vacuum operated secondaries on my 350 T-Bucket. Have a HEI ignition so no vacuum hooked to the carb and all vacuum inlets plugged. Now, my question. How wide should the secondary butterflies open? Under WOT and my looking down the throat, the primaries go wide open and the secondaries only open about 1/8th inch. Is this normal? It runs like a raped ape but need to get the best out of this 650. Thanks lots
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