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11-27-2009, 04:22 PM
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#1 |
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Registered User
Join Date: Nov 2009
Location: Bloomington, IL
Posts: 34
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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! 
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-Tony Money is no object... once it's in your wife's hands. 1972 GMC Sierra 1977 Ford LTD II 2000 Pontiac Grand Prix (wife's ride) |
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11-27-2009, 04:46 PM
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#2 |
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Registered User
 Join Date: Oct 2005
Location: Overland Park, Ks.
Posts: 5,194
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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.
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11-27-2009, 04:47 PM
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#3 | |
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Sierra Grande Club
Join Date: Jan 2007
Location: New Mexico USA
Posts: 2,433
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Re: California Quadrajet?
Quote:
s/t
__________________
1971 GMC Sierra Grande, 1/2 ton short wide, original 4 bolt 010 020 block & heads. (matching #'s). 383 stroker, SMI q jet 750 cfm, Lunati Voodoo 60102 cam, Scorpion roller rockers, Spin Tech pro street mufflers with X pipe. 
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