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Old 06-10-2012, 03:10 PM   #1
SRVBLUES64
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Location: Noblesville, Indiana
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holley avenger

I have a question about my holley 560 first of all the truck runs great its all timed, new plugs, everythings pretty new all fuel levels are in checked however when I want to get into the secondaries or I excelerate at the point of the secondaries coming on it bogs down and makes a awful sound any thoughts?
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Old 06-10-2012, 05:17 PM   #2
bonacker
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Re: holley avenger

If it is a vacuum secondary, they are opening too fast so install a stiffer spring. Even better, Google "holley carb bogs" and there are all sorts of write ups. Hope this helps.
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Old 06-10-2012, 07:43 PM   #3
Rich 5150 69
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Re: holley avenger

If I`m not mistaken on this holley sends a softer and stiffer spring with thier avenger carbs try the other spring in the secondary vacuum dashpot...
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