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where to getta q-jet

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by reddog64, Jun 14, 2002.

  1. reddog64

    reddog64 1/2 ton status

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    Location:
    Federal Way, Washington
    I wanna pick a q-jet up at the junk yard and overhaul it for experience... how do i know i'm getting the right one??? for my 400 sbc???

    how do i get the right kit to rebuild it???
     
  2. Lazydog

    Lazydog 1/2 ton status

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    I bought a qjet off ebay. I found the serial number for my truck at this web site: http://yeagerd.home.mindspring.com/qjetdecode.html. Most of the sellers on EBAY post the serial number of the qjet they are selling. I kept checking until I found the one I needed. The serial number I needed was posted frequently, It took me awhile to win the carb. I didn't want to pay to much.
     
  3. 91K5

    91K5 1/2 ton status

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    I'd try and find a older Q-jet, a pre 1975 one (4MV instead of M4M). The later ones had some off-idle and tunable functionality taken out of them (emmisions carb), and are a little tougher to find some parts for. Look for ones with the serial number starting with 702, 703, or 704. If you plan on doing a complete rebuild with jets/rods and all, then it wont really matter which one you get, the only difference is the jet/rod sizes, and 750 vs 795 CFM. Most of them should be re-jetted since starting in the early 70s GM started leaning them out to meet emmisions so they're not as powerfull as they could be. I'm a huge Q-jet fan so if you need more help let me know /forums/images/icons/smile.gif
     

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