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Old 09-11-2012, 07:11 PM   #2
Dean Oliver
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Join Date: May 2002
Location: Stuttgart, AR
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Default Re: Quadrajet Gasket and tuning

Mat,

As gsa612 said, you are allowed to run two gaskets under a stocker carb. Most Q-jet engines, including mine, prefer two of the 1/4" thick open gaskets. Applications that have a low rpm range will typically like two of the four hole gaskets. Some racers do run a combination of the two on a SBC, and as cheap as gaskets are you should try every possible combination. You'll find one combination that will be worth at least .02-.03 over the others, so it could be the cheapest hp you'll find.

As for your rich/lean issue, are you basing this on O2 data? As long as your fuel system is adequate, you can lean a Q-jet on the front end and richen it on the top end (or vice versa, or do one of the two independently).

Dean
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