Quadrajet Gasket and tuning

[FED 387]

FIRST get rid of the BG pump--second buy an Aeromotive pump like a 11203 uses less AMPs, Magna Fuel or a Weldon both great pumps too-- stay away from the Holleys too---check ALL your hose sizes make sure they are adequate for your set up place fuel pressure gauge so you can monitor whats going on during the run--then if problem persists call D.A.

[Dean Oliver]

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

[Kenny Wigington]

Ahh... Now you have THE MAN involved ! ^^^^
What size lines do you have and what reg are you using ? You should call Deano. Danny has great stuff too.

[Tony Curcio]

Assuming the fuel delivery checks out, the high-speed bypass tubes can be drilled out to richen the top end only. Danny Ashley may have already done this for you, but you should ask if it was done, and if so, to what size.
After making this change, you may need to use leaner secondary metering rods.

[mat H/SA]

Yes Dean i have a racepack with O2 first gear low 11 then in the 14

I will try what you told me

Tony my fuel system is ok