Holley vacuum secondaries

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#1 (permalink)

12-29-2004, 08:37 AM

newBDR

CC Member

Join Date: May 2004

Location: Chester Springs, pa

Cobra Make, Engine: Backdraft 302

Posts: 162

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Holley vacuum secondaries

Anyone play with different springs in their vacuum pod? Any noticable change to report? I have a 670 Street Avenger on my 302 and was toying with the idea of getting their spring kit to see if it makes any difference I can feel - opening the secondaries a little sooner or later. According to Holley, a lighter car can benefit from opening them sooner for a bit better performance.

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