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Carburetors Carb discussion and questions. Upgrading your Third Gen's carburetor, swapping TBI to carburetor, or TPI to carburetor? Need LG4 or H.O. info? Post it here.

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Old 05-20-2009, 10:11 AM   #1
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Idle Bleed on 3310....
>Many tuner books recommend drilling out slightly, the idle bleeds on the Holley 3310 to lean out the idle....idle being too rich with this carb on a 350. Has anybody done this? Does it work? Obviously I want to know before I mess up my carb! I've dropped my primary jets to 70's and have my mixture screws out 1/2 turn only.....and it still smells rich. FP is 6psi and my cam is a ZZ4. Everything else runs great! When the sec. kicks in, the car just takes off with no bogs!
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Old 05-20-2009, 03:02 PM   #2
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I haven't drilled out fixed orfi, but I have messed with replaceable bleeds. It doesn't take much, and making them bigger is a lot easier than making them smaller. You need precision drill bits, which last time I checked were about $100 for a set that would cover both idle and high speed sizes.
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Old 05-20-2009, 04:53 PM   #3
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Re: Idle Bleed on 3310....
>So, using the interchangeable bleeds: do you need large changes to lean out the idle mixture?
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Old 05-20-2009, 04:53 PM
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Reload this Page Idle Bleed on 3310....
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