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1984 gmc suburban gear ratios

Discussion in '1936-Present Suburban' started by BIG B., Jul 29, 2003.

  1. BIG B.

    BIG B. Registered Member

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    First off did the 84 burb come with a 454 and if so what was the gear ratio in the rear 14 bolt. Only reason I ask is because I have a chance to purchase a set of axles out of an 84 burb but cant go and look at them until this weekend. I am real anxious to find out before I drive 45 minutes to look at them myself. thanks
     
  2. muddysub

    muddysub 1 ton suburban status Staff Member Moderator GMOTM Winner

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    the only way a 4x4 suburban willhave a 454 in it is if its a swap in that someones done to it. gearing... either 3.73 or 4.10.
     
  3. Muddytazz

    Muddytazz 1 ton status

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    First off, only 2wd burbs ever came with 454's....more than likely either 3.73's or 4.10, but the true way of finding out is to pull the cover /forums/images/graemlins/thumb.gif
     
  4. BIG B.

    BIG B. Registered Member

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    [ QUOTE ]
    First off, only 2wd burbs ever came with 454's....more than likely either 3.73's or 4.10, but the true way of finding out is to pull the cover /forums/images/graemlins/thumb.gif

    [/ QUOTE ] If it is a 2wd could I still use both axles in my 4x4?
     
  5. Muddytazz

    Muddytazz 1 ton status

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    if its a 2wd, you can only use the rear axle, the front axle will only have 2wd parts(looks like a car front end)
     
  6. Ddragggon

    Ddragggon 1/2 ton status

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    [ QUOTE ]
    First off, only 2wd burbs ever came with 454's....more than likely either 3.73's or 4.10, but the true way of finding out is to pull the cover /forums/images/graemlins/thumb.gif

    [/ QUOTE ] not entirely true on the only part. while autozone's computers refuse to admit that such a thing as a 454 bound K20 existed, I've been proven wrong by VIN's from other board members. also, Pep boy's computer admits the existance, and the mounting holes that allow either a big block, small block, or I-6 to be used kinda argue towards the fact they sold 454 bound K20's at some point, to someone. afterall, punching another hole costs another few cents, and a few cents saved over 30,000,000 vehicles is a few million bucks....

    but what do I know...
     
  7. u2slow

    u2slow 1/2 ton status

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    I seem to remember '92 being a landmark year for the Burb since it was the first year you could get a the BBC in a 4x4. /forums/images/graemlins/thinking.gif

    3.21 & 3.42 are common 14FF ratios in 2wd BBC applications.
     
  8. azblazor

    azblazor 1/2 ton status Premium Member

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    1992 was the first year you could buy a 454 4x4 Suburban. (Rich won't ever admit it though). If this thread goes on long enough - somebody will chime in about how they used to work for a mining company (etc.) and they saw a 454 4x4 suburban that they swear came from the factory that way. Well.......maybe a special order for commercial customers could have gotten some built....maybe..or maybe a dealer did a mass swap. But......I'll still wager a fair amount that you could not order one as an individual ...ever... until 1992 (I tried my best in 1984). I will pay to see an actual vin on an actual (pre 1992) 4x4 Suburban that shows a code for a 454. If you can't produce that....the truck has nothing more than a swapped in BBC.(period)
     
  9. BIG B.

    BIG B. Registered Member

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    [/ QUOTE ] I will pay to see an actual vin on an actual (pre 1992) 4x4 Suburban that shows a code for a 454. [ QUOTE ]
    How much would you be willing to pay? LOL
     
  10. azblazor

    azblazor 1/2 ton status Premium Member

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  11. BIG B.

    BIG B. Registered Member

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    I will see what I can find. LOL /forums/images/graemlins/shocked.gif
     
  12. fatboy

    fatboy 1/2 ton status

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    another way to check the gearing ruffly is to rotate the wheel or drum 1 time and count how many times the yoke turns if it is slightly under 4 it is 3,73 if slightly over 4.10 just a quick clean way.....
     

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