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Axle code

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by outlaw612, Jul 10, 2001.

  1. outlaw612

    outlaw612 1/2 ton status

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    Does the code "RJU" make sense to anyone? It was on top of te rear axle in my 79 3/4 ton pickup
    .
     
  2. OFFRDK5

    OFFRDK5 1/2 ton status Premium Member

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    I wanna find out what that means too....but no one seems to know of a place to get them other than a junkyard!!
    I think there would be an online place....but no one coughs up the place....

    SK-15
    J**P...it's whats for dinner!
    Roads? Where we're going, we don't need any roads!
     
  3. OFFRDK5

    OFFRDK5 1/2 ton status Premium Member

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    DOH!! I just realized that was you!! I am still looking for the code man!! I want them axles!!


    SK-15
    J**P...it's whats for dinner!
    Roads? Where we're going, we don't need any roads!
     
  4. HarryH3

    HarryH3 1 ton status Author

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    The only place I've ever seen those codes listed is in the Hollanders manuals. Every junkyard on the planet has a set of those manuals. GM assigned their own code to the axles, known as the RPO code. The RPO codes are the only ones I've ever found in a GM manual. However, the RPO codes are not stamped on the axle anywhere. [​IMG]

    <font color=black>HarryH3 - '75 K5</font color=black>
    <A target="_blank" HREF=http://www.angelfire.com/super/ThunderTruck>http://www.angelfire.com/super/ThunderTruck</A>
    It's a great day to be alive...
     
  5. dyeager535

    dyeager535 1 ton status Premium Member

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    Axle codes aren't in my Hollanders, nor are the in the Haynes manual. (although the Haynes manual for the Cutlass lists them..go figure) Not sure where else you can get that information...maybe try a local dealerships parts counter??


    Dorian
    My tech/links page: <A target="_blank" HREF=http://www.dorianyeager.com/index2.html>http://www.dorianyeager.com/index2.html</A>
    No anti-theft measures on your truck? No pity when its stolen
     
  6. 84_Chevy_K10

    84_Chevy_K10 Banned

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    Take the cover off and look at the ring gear. It'll have the number of pinion teeth, followed by the ring gear teeth. There's some numbers before that, but at the end of the sequence it'll have it.

    Mine says XXXX 10 41, which if you divide out 41/10, you get 4.10.

    Tim
    '84 Chevy K10, lifted, loud, fast, and 3/4 ton axles
     
  7. Executioner

    Executioner 1/2 ton status

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    Wish I could remeber the book that I seen them in, it was in the public libeary, and if I rember right it was for
    cars and not trucks.
    Good luck
     
  8. OFFRDK5

    OFFRDK5 1/2 ton status Premium Member

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    After about 15 min of searching by the dealer in my area they came up and told me that they are 3.73 gear ratio.


    SK-15
    J**P...it's whats for dinner!
    Roads? Where we're going, we don't need any roads!
     

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