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Grimmy (or other quadre-jet gurus)

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by muddin4fun, Oct 27, 2001.

  1. muddin4fun

    muddin4fun 3/4 ton status

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    I got a carb. It's not an electric choke. I think i'ts a thermostatic choke, but it has a place for a vacum line on it. It's not a vacum choke is it? Also, I have no idea what year it is. the number on the carb starts out 1705. I'd like to find out what year that is and what the cfm is if I can. And, the shafts are loose. Where do I need to go and what do I need to do to have it re-sleaved?

    Peace and stuff [​IMG],

    Muddin

    <a target="_blank" href=http://www.geocities.com/muddin4fun79blazer>www.geocities.com/muddin4fun79blazer</a>
     
  2. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    I think the non-electric choke model uses a heat stove on the intake manifold.

    Rene

    <font color=green>Dyslexics of the world...UNTIE!</font color=green>
    <a target="_blank" href=http://coloradok5.com/gallery/project_T2> tRusty pics...</a>
     
  3. Tatman

    Tatman Registered Member

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    just my .02 worth... but it might be less hassle to go to Auto Zone and buy a rebuilt one ( using yours as a core) mine for my '78 only cost $143... might be less $$$ than to have yours sleeved and still rebuilt. And I have heard the opinions about Auto Zone, but I have been dealing with the local store for 5+ years with no complaints, and am very happy with the carb I got.

    Brian
    <a target="_blank" href=http://www.saddletramps.com/BlazerK5.htm>www.saddletramps.com/BlazerK5.htm</a>
     
  4. Grim-Reaper

    Grim-Reaper 3/4 ton status Author

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    Bowl with a port on either end? If so peice of cake to convert. Those are not vac lines. the intake has a pipe down into the exhaust crossover passage that gets heated. the hot air travels up the pipe to warm the bimetal spring. Cap the prots and a electric element off a 82up will bolt right on. You should get a electric pressure switch to make it work right. what it does is keeps the choke from getting 12v unless the engine is running. The sell one in Jegs and summit for cutting off fuel pumps in the fuel sections. That's the one to get. You walk into a parts store they look at you funny when you ask for those. Any 82 up electric choke CM will have the switch if your junk yarding.
    Just trace the choke wire back to the switch. Get as much wire as you can and the switch and the T if it has the switch up behind the distributor in a T with the gage/idiot light sender.

    Women dig dents and flat paint!
    <a target="_blank" href=http://communities.msn.com/OffroadK5s>communities.msn.com/OffroadK5s</a>
    75 Jimmy, Dollar
    Grim-Reaper
     
  5. muddin4fun

    muddin4fun 3/4 ton status

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    What type of place do I need to go to in order to put sleeves on the shafts (is that right?)?

    Peace and stuff [​IMG],

    Muddin

    <a target="_blank" href=http://www.geocities.com/muddin4fun79blazer>www.geocities.com/muddin4fun79blazer</a>
     
  6. Grim-Reaper

    Grim-Reaper 3/4 ton status Author

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    Call your local Napa that has a good machine shop and see if they can do the work. Otherwise look up Carberators in the phone book and see if you can find a local carb shop that can do it for you. Mos of the Ruebuild carbs from, Pep girls, Zone etc that I have seen are ususaly in need ot this repair but wasn't done. Go figure.

    Women dig dents and flat paint!
    <a target="_blank" href=http://communities.msn.com/OffroadK5s>communities.msn.com/OffroadK5s</a>
    75 Jimmy, Dollar
    Grim-Reaper
     
  7. Twiz

    Twiz 1/2 ton status

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    Carb shaft rebushed, take it to a dealer and have them do it for you. Most of 'em should have a kit for this repair. (same kit that fixes the T.B. I.s, but with different bushings/hone for the TB.I.s)

    I gota thing for dealers.

    <font color=blue>Twiztid</font color=blue>
     
  8. ZZ4x4

    ZZ4x4 1/2 ton status

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    Location:
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    Muddin, The decode chart for the Q-jet model is:
    ---------------------------------------
    Produced 1976 or later
    17080243
    2629 CNO

    170 - Prefix Code
    8 - Decade Produced
    5 - 1976-1979 (1705)
    8 - 1980's (1708)
    0 - Year Produced
    2 - Model
    0 - Monojet (1 bbl) Federal standards
    1 - Two jet (2 bbl) Federal standards
    2 - Quadrajet (4 bbl) Federal standards
    3 - Monojet (1 bbl) California standards
    4 - Two jet (2 bbl) California standards
    5 - Quadrajet (4 bbl) California standards
    6 - VariJet (2 bbl) Fed
    4 - Division.
    0, 1, and 2 all indicate Chevrolet.
    4 - Buick
    5 - Olds
    6,7 - Pontiac
    3 - Transmission
    Even numbers - Automatic Transmission
    Odd numbers - Manual Transmission
    CNO - Customer Code
    2629 - Date Code
    262 - 262nd day of the year
    9 - Year

    Pre-76
    7028219
    DG 1938

    70 - Prefix code. "70" will appear on all late '60's Rochester Carburetors.
    2 - Decade produced.
    2 - 1960's
    3 - 1060's with A.I.R.
    4 - 1970-1975
    8 - Year produced. 8 = 1968
    2 - Model
    0 - Monojet (1 bbl) Federal standards
    1 - Two jet (2 bbl) Federal standards
    2 - Quadrajet (4 bbl) Federal standards
    3 - Monojet (1 bbl) California standards
    4 - Two jet (2 bbl) California standards
    5 - Quadrajet (4 bbl) California standards
    6 - VariJet (2 bbl) Fed
    1 - Division.
    0, 1, and 2 all indicate Chevrolet.
    4 - Buick
    5 - Olds
    6,7 - Pontiac
    9 - Transmission
    Even numbers - Automatic Transmission
    Odd numbers - Manual Transmission
    DG - Customer code.
    1938 - Date Code
    193 - 193 rd Day of the year
    8 - Year
     

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