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Rochester Q-Jet Indentification Help

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by Stoopalini, Nov 30, 2002.

  1. Stoopalini

    Stoopalini 1/2 ton status

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    Location:
    Austin, Texas
    I have two Rockester Q-jet carbs in the garage.

    1) 17085226
    2) 17056208

    I know carb #1 is for the computer controlled setup (85?), but I don't know what carb #2 is off of. I bolded the 0 because I'm not sure if it is really a 0 or not. That particular number is kind of worn down.

    Can anyone help me intentify this carb? Would it be worth rebuilding and using on my 350?

    Thanks,
    Thomas.
     
  2. Zeus33rd

    Zeus33rd Smarter than you GMOTM Winner

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    Location:
    Grass Valley, CA
    Got this info from www.carbs.net -


    Carb # 17085226-
    Rochester R-4 17085226 85-87 Chev/GMC/Truck BOP Grey Sol.

    Carb # 17056208- Rochester R-4 17056208 77 BOP 75-77 Chev/GMC/Truck

    /forums/images/graemlins/thumb.gif
     
  3. wrathORC

    wrathORC 1/2 ton status

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    It probably came off a mid to late seventies truck. I think that's the same one that was on my 77.

    It's not a bad carb. Does it have sealed primaries? If so, then it's more work with a dremel tool. I'd recommend finding a non-APT quadrajet if you can. APT can be spotted by the nob sticking up on the passenger front of the carb.

    I just read the other post...

    I'd rebuild the older one before I rebuilt the newer one. Chances are the newer one has smaller passages and a smaller float bowl. I can suck the float bowl dry on my 84 carburetor (I don't know what the part number is) with DR rods and an O hanger.
     

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