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Optional axle ratio

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by K5_73, Sep 30, 2001.

  1. K5_73

    K5_73 Registered Member

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    My Options list that's on my driver's fender well says "optional axle ratio" and the number before it says "1ZN8". Without counting the teeth, who knows where I can find out what that code means? Thx in advance.

    Stupid hurts
     
  2. RedDwarf

    RedDwarf 1/2 ton status

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    Sorry, don't have that option listed, but here are the options: 3.07, 3.73, 4.11
    That really narrows it down eh?
    Standard with the 6 was 4.11, with the 8 it was 3.73.
    What engine did it come with?

    Still Poundin' "pavment" after 283 Posts!!!
     
  3. solowookie

    solowookie 1/2 ton status

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    2.73's also I believe

    <font color=blue> Jeff - may the force be with you</font color=blue>
    <a target="_blank" href=http://coloradok5.com/gallery/Jeffs-Stuff>link to k5's</a>
     
  4. RedDwarf

    RedDwarf 1/2 ton status

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    Not in '73

    Still Poundin' "pavment" after 283 Posts!!!
     
  5. solowookie

    solowookie 1/2 ton status

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    oh you could be right... I had 3.08's in my 89, and I know I've seen people complain here about 2.73's...

    as far as what came in what years I got no idea...

    <font color=blue> Jeff - may the force be with you</font color=blue>
    <a target="_blank" href=http://coloradok5.com/gallery/Jeffs-Stuff>link to k5's</a>
     
  6. K5_73

    K5_73 Registered Member

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    It came w/ a 350/4bbl, sm465 tranny.

    Stupid hurts
     
  7. Grim-Reaper

    Grim-Reaper 3/4 ton status Author

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    with the 465 you probably got the 3.73. 3.08 is the standard gear in most years so it having the option gear it is probably 3.73. 4.10 is not unheard of also.
    On the front diff on one of the cover bolts may be a tag from Dana (even on 10 bolts because Dana built them too) and it will list the gear if it's still there.

    I don't need no damn shop manual, I got a pornographic memory.
    <a target="_blank" href=http://communities.msn.com/OffroadK5s>communities.msn.com/OffroadK5s</a>
    75 Jimmy, Dollar
    Grim-Reaper
     
  8. Executioner

    Executioner 1/2 ton status

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    Do you have any verifable soruces to quote that Dana built the 10 bolt ?
    If you do please share.
     
  9. Grim-Reaper

    Grim-Reaper 3/4 ton status Author

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    Yeah the DANA &lt;&gt; Diamond cast into the side of the pig and the fact that all the parts from the knuckles out are interchangable between the D44 on them and every seal including the inner axle seals are DANA parts. If you order a 10bolt axle shaft from GM it comes in a DANA box. Need anymore proof?

    I don't need no damn shop manual, I got a pornographic memory.
    <a target="_blank" href=http://communities.msn.com/OffroadK5s>communities.msn.com/OffroadK5s</a>
    75 Jimmy, Dollar
    Grim-Reaper
     

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