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Old 11-28-2002, 01:56 PM
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Hotfingrs Hotfingrs is offline
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Join Date: Dec 2001
Location: Castalia, Oh
Cobra Make, Engine: EM cobra, 450 inch sbc running a best ET of 9.14..so far..ALL MOTOR...approx 800 horse.............ERA with 482 FE..All Aluminum Engine
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There are a lot of variables when adjusting a carb. First off, you're on the idle circuit until approx 3000 rpms...you might try adjusting your idle screws. Always use a vacuum gauge and adjust for highest reading, both sides should be about the same number of turns off the seat. The only reason to run square jetting is that you're not running a power valve...otherwise the primaries should be about 10 sizes smaller than the secondaries. The power valve increases the jet size on the primaries 10 sizes when it opens. I always use a 2.5 power valve....that way it's not constantly opening in stop and go traffic and only open when you are at WOT. These are just a few areas that you can start tuning on...You can email me if you want further discussion on any of these areas....
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