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Old 05-13-2021, 04:00 PM
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Join Date: Aug 2007
Location: Carlsbad, Ca
Cobra Make, Engine: SPF 2932 with 438 Lykins Motorsports engine. Previous owner of FFR 5452.
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Being a vacuum secondary AVS Holley, most likely you’re experiencing a momentary lean condition because the secondaries aren’t opening fast enough.
Easily cured. My guess is when rebuilt, the secondary spring was replaced with a stronger spring than your car needed. Jump over to this site and it will show you how to replace the spring to a lighter one.
https://documents.holley.com/199r9934-3rev4.pdf
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