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BigChevy80

11-27-2009 04:22 PM

California Quadrajet?

Question for the Quadrajet gurus on here. I was running the numbers from the Quadrajet on my '72 GMC and came up with something interesting. 7040511. As far as I can decipher, this carb was made in 1970 and is a California emissions carb. What is the difference between it and a regular Quadrajet? Can I rebuild it back to regular specs or should I look for a different core?

And no, I'm not interested in putting a Holley or Edelbrock carb on it! :banghead:

Wrenchbender Ret

11-27-2009 04:46 PM

Re: California Quadrajet?

Its probably just a little lean. When you build it check the size of the main metering jets. They usually run about .072-.073. There are variations in the metering rods but I'm not familiar with the sizes. You may want to decrease the tension on the sec. air valve springs.

Sport/Truck

11-27-2009 04:47 PM

Re: California Quadrajet?

Quote:

Originally Posted by BigChevy80 (Post 3642059)

You can talk to Sean at SMI
s/t

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