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Quick Fuel Vac secondary tuning #2809083 08/15/20 12:45 AM 08/15/20 12:45 AM
Joined: Dec 2007 Posts: 232 Alberta Canada PossessedDuster OP enthusiast
PossessedDuster OP enthusiast Joined: Dec 2007 Posts: 232 Alberta Canada	I've been messing around the the quick fuel adjustable vac secondary I put on my 3310. From my understanding it has the purple spring inside and you allow more or less vacuum to act upon it by turning the bleed screw. I can completely turn the bleed screw in allowing full vacuum to the diaphragm and the car responds a bit better with no drivability issues. I would assume then I need a lighter spring and start over again with adjusting. Are the Holley springs the same? No one has the Quick Fuel ones locally.

Re: Quick Fuel Vac secondary tuning [Re: PossessedDuster] #2809122 08/15/20 06:51 AM 08/15/20 06:51 AM
Joined: Feb 2005 Posts: 105 Baltimore, MD M MadMax58 member
MadMax58 member M Joined: Feb 2005 Posts: 105 Baltimore, MD	Yes, the Holley springs are the same as Quick Fuel.

Re: Quick Fuel Vac secondary tuning [Re: MadMax58] #2809124 08/15/20 06:57 AM 08/15/20 06:57 AM
Joined: Jul 2009 Posts: 794 massachusetts U.S.A. 1 1969ronnie super stock
1969ronnie super stock 1 Joined: Jul 2009 Posts: 794 massachusetts U.S.A.	hi , after purple , you should try the holley tall yellow spring next . please post you test results .

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