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Stage 1 Carb

Discussion in 'Buick FAQ' started by Carcrazy, Sep 17, 2011.

Page 1 of 2
  1. Carcrazy

    Carcrazy Dan Whytock

    Trying to clear a few things up about stage 1 carb numbers.

    Some sources i look at show 72 stage 1 4 speed carb should be 7042942
    well other sites show 7042242 are stage 1 Auto and manual carb

    What i'm wondering is what is the correct number for a 72 stage 1 4 speed.

    and i also have a 72 stage 1 4 speed that was sold new in canada and is suppose to be untouched with a carb number of 7042243 which i believe is a 455 4 speed carb.
    My books show there was less 455 4 speeds made then stage 1 4 speeds in 72 so Im wondering if there may have been a mix up from factory or if that is the correct carb on that engine?

    Any help would be great.

    Thanks,

    Dan
     
    Carcrazy, Sep 17, 2011
    #1
  2. flynbuick

    flynbuick Guest

    7042942 = cal 72 stage 1 carb

    7042242 = 72 stage 1 carb except cal

    7042243 = 72 manual trans non stage gs 455 carb
     
    flynbuick, Sep 17, 2011
    #2
  3. Carcrazy

    Carcrazy Dan Whytock

    So if i have a 72 stage 1 4 speed with carb number 7042243 what are the chances what it was that way from factroy since they made less 455 4 speeds then Stage 1 4 speed.
     
    Carcrazy, Sep 17, 2011
    #3
  4. flynbuick

    flynbuick Guest

    What is the date code on your carb?
     
    flynbuick, Sep 17, 2011
    #4
  5. Carcrazy

    Carcrazy Dan Whytock

    Car was built September 15 1971
    Carb number is 2231
     
    Carcrazy, Sep 18, 2011
    #5
  6. flynbuick

    flynbuick Guest

    And there is a V in your VIN?
     
    flynbuick, Sep 18, 2011
    #6
  7. Carcrazy

    Carcrazy Dan Whytock

    Thats correct. There is a V in the VIN
    Also has 1112016 distributor and WS block
     
    Carcrazy, Sep 19, 2011
    #7
  8. flynbuick

    flynbuick Guest

    Maybe some others have an explanation. I would say either it was changed to the incorrect carb sometime in its life or the factory used the incorrect carb.
     
    flynbuick, Sep 19, 2011
    #8
  9. Brad Conley

    Brad Conley RIP Staff Member

    Just as our esteemed counselor advises, either someone changed it during the past 40 years or the factory goofed and placed the wrong carb on the engine. They weren't building showcars back then.

    Get the date code off the carb...that will be a big clue as to it being a factory goof or a replacement carb.
     
    Brad Conley, Sep 19, 2011
    #9
  10. flynbuick

    flynbuick Guest

    He did. It seems consistent with the car and suggests of a factory mistake.
     
    flynbuick, Sep 19, 2011
    #10
  11. Brad Conley

    Brad Conley RIP Staff Member

    Yes, I would concur with you Jim. Factory mistake.

    My bad on missing the date code. Thanks for correcting my mistake.
     
    Brad Conley, Sep 19, 2011
    #11
  12. flynbuick

    flynbuick Guest

    We both were on the same trail in an attempt to resolve the mystery.:Smarty:
     
    flynbuick, Sep 19, 2011
    #12
  13. Carcrazy

    Carcrazy Dan Whytock

    So do you think this would hurt the value at all?
     
    Carcrazy, Sep 19, 2011
    #13
  14. flynbuick

    flynbuick Guest

    It is hard to say. A restored stage 1 carb sold separately may fetch $1-2K. A prospective buyer that views the car as incorrect without the 242 carb may feel he has to pay out an additional $1-2K to make it correct whereas some buyers may not care. :Do No:
     
    flynbuick, Sep 19, 2011
    #14
  15. GS Spoken Here

    GS Spoken Here Well-Known Member

    I have the same carb on a 72 GS Stage1 4 speed car, V code mostly untuched car.

    trim tag

    Body year= ST 72
    Time build code=11B
    Carb # 7042243 MD 2721
    Dist # 1112016
    Block WS

    Not very good at decode but looks if I am correct
    Build date= 2nd week of Nov 71
    Carb date= 31 Aug 71

    Based on that mine may also be a factory error if I have decoded correctly thanks Bill.
     
    Last edited: Sep 20, 2011
    GS Spoken Here, Sep 20, 2011
    #15
  16. Brett Slater

    Brett Slater Super Moderator Staff Member

    There's a number I've yet to see.
     
    Brett Slater, Sep 20, 2011
    #16
  17. GS Spoken Here

    GS Spoken Here Well-Known Member

    Bret my typo, the number is 7042243 like the one Carcrazy has. Thanks Bill.
     
    GS Spoken Here, Sep 20, 2011
    #17
  18. robs71redriv

    robs71redriv robs71redriv

    He Did say it was sold new in - which means Canadian emission standards - code
    <table class="main" border="0" cellpadding="5" cellspacing="0" width="95%"><tbody><tr><td>Z49</td><td>
    </td><td>1 Mandatory Canadian Base Equipment Modifications</td></tr></tbody></table> which could explain the different carb number (not sure what it included, just a could be).
    there other codes that only show on candian sold cars, when you get the GM Canada documentation, some are kind of strange until you think about it.
    like - why extra fuel for Canadian delivery - they by truck train didn't drive them over --or did they .....??????
    <table class="main" border="0" cellpadding="5" cellspacing="0" width="95%"><tbody><tr><td>W84</td><td>
    </td><td>1 Additional Fuel For Delivery</td></tr></tbody></table>
     
    robs71redriv, Sep 20, 2011
    #18
  19. Steve Craig

    Steve Craig Gold Level Contributor

     
    Steve Craig, Sep 20, 2011
    #19
  20. Duane

    Duane Member

    Canadian Base Equipment Modifications often included a stronger antifreeze mix for lower temperatures.
    Duane
     
    Duane, Sep 20, 2011
    #20
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