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carb ?.. 81 chevy

Discussion in 'The Garage' started by 82K5_6.5L, Jun 20, 2005.

  1. 82K5_6.5L

    82K5_6.5L 1/2 ton status

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    hey guys, trying to help out my old man.. hes got an 81 3/4 ton, chevy longbed 4x4, w/ a 350, 3spd ( 1, 2, D..so thats a 350 or 400 tranny? ?? not sure? cuz i got a 700r4 in the K5) and he needs a new carb. bad!! its stuttering all crazy! its got 104K original miles, which is bad ass! so anybody recommend a good carb, that isnt to expensive?

    thanx
     
  2. Mad-Dog

    Mad-Dog 1/2 ton status

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    2 or 4 barrel carb...?
    square or spread bore...?
    The tranny could be either a TH350 or TH400 as they both are 3 speeds,
    the shape of the tranny pan will help your local parts house identify the tranny. :confused:
     
  3. 82K5_6.5L

    82K5_6.5L 1/2 ton status

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    sorry, its a 4 barrel.. not sure on square or spread bore...??
     
  4. Mad-Dog

    Mad-Dog 1/2 ton status

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    Ok..no problem, it's most likely a quadrajet which is a spread bore design.
    Spread bore carbs have small barrels in the front and big barrels in the back,
    Square bore carbs have the same size front and rear.

    http://www.summitracing.com

    part # SUM-210216

    $315.00

    Or you can rebuild the one he has now a lot cheaper.....
     
  5. 82K5_6.5L

    82K5_6.5L 1/2 ton status

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    i was over at my buddies house tonite, he has a brand new eddlebrock 750cfm carb.. selling it for $200.. he used to work at auto zone and said that might me too big for a stock 350 v8. it was going to be for his friends 454, but it got stolen.. so now he's selling it. do u think that is to much carb?
     
  6. Blazer1970

    Blazer1970 1/2 ton status

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    Rebuild the Q-Jet.
     
  7. 82K5_6.5L

    82K5_6.5L 1/2 ton status

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    how much am i looking at for a rebuild? if its more then 200, i dont think its worth it since my friend has the eddlebrock.?? :confused:
     
  8. Mad-Dog

    Mad-Dog 1/2 ton status

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    the 750 is fine, the carb wont supply any more air than the engine needs.
    You can nail the thriottle and all 4 bareels will open but the secondary air valve will only open as much as the engine demands.
     

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