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mainejohn

03-28-2011 01:49 PM

holley street avenger 670 running rich

I installed a new holley street avenger on my new topend rebuilt of my 355 sbc. it runs super rich and smells like hell. Iam only getting about 8-9 vacuum, but my PV is a 6.5, should i have a 3.5 ! would that make it a little leaner?

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