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ok, someone explain to me U joint numbers

Discussion in '1969-1972 K5 Blazer | Truck | Suburban' started by R72K5, Feb 12, 2002.

  1. R72K5

    R72K5 Banned

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    i have no clue what 1350 means, cna someone fil me in on how these numbers work ? what is a 1350 ??

    and others ?

    who's numbers are these ?

    thanks for anything

    run it til it breaks, fix it, and break it again!
     
  2. Greg72

    Greg72 "Might As Well..." Staff Member Super Moderator

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    I found a nice table of U-Joints in the March 2001 "Four Wheeler" p. 56

    They go in order from smallest to largest:
    1310
    1330
    1350
    1410

    They have different ratings for the angularity that they will work with, and most importantly for most people the amount of torque that can be applied before they explode. Here are the "Continuous Lb-Ft" and "Short Duration Lb-Ft" torque values for those u-joints:

    1310...130...800
    1330...150...890
    1350...210...1240
    1410...250...1500

    That's a start.....hopefully someone else will jump in with more complete answers, OR you could always post this over on the '73-91 board.....more eyes are over there!!! [​IMG]



    -Greg72

    '72 K5 Blazer - 427BB/TH350/NP205/6" Lift/35x12.50's
    <font color=blue>See it here: </font color=blue><a target="_blank" href=http://coloradok5.com/gallery/albun38>http://coloradok5.com/gallery/albun38</a>
     
  3. R72K5

    R72K5 Banned

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    Cool !!
    So they are all the same size caps and widths and all? Just different ratings and such ? Wild,,,

    Good to learn that stuff :)

    Randy


    run it til it breaks, fix it, and break it again!
     
  4. Greg72

    Greg72 "Might As Well..." Staff Member Super Moderator

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    Well I wouldn't say that......

    The larger U-Joints are physically BIGGER.....so you can't just interchange these things....kinda makes sense. There all made out the of same materials, so the only way to make them STRONGER is to make sure that there's MORE material there in the first place!!!

    Anyway, if you can find that article, it gives you all the dimensions of the caps, and overall size, etc.

    It's a start though.... [​IMG]





    -Greg72

    '72 K5 Blazer - 427BB/TH350/NP205/6" Lift/35x12.50's
    <font color=blue>See it here: </font color=blue><a target="_blank" href=http://coloradok5.com/gallery/albun38>http://coloradok5.com/gallery/albun38</a>
     
  5. 72THING

    72THING 1/2 ton status

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    I know 1310 and 1330 have the same cap size, 1 1/16", but the 1330 has a wider cross. The 1350 has a 1 3/16" cap size and a considerably larger cross than 1330 or 1350. I'm not very familiar with the 1410 size except I know that some Dodge 1 tons came with them. Hope this helps.

    Will

    '72 C10, originally 2WD, 6"Springs f+r, Dana 60 f+r, Lock-Right front, welded rear, 4.56s, 350, SM465, NP205, 39.5" TSLs, ORD crossover steering
     
  6. R72K5

    R72K5 Banned

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    are our original stock caps 1 1/16" or ?

    how can ppl use bigger oens then ? they dont fit....

    thanks again

    run it til it breaks, fix it, and break it again!
     
  7. frito

    frito Registered Member

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    you can use bigger ones by changing your yokes on your axle and transfer case ... and then most importantly you have to get a driveshaft that takes that size U-joint it can get quite expensive very fast =)

    71 K5 Blazer,350/TH350/205 33's/ 2inch lift for now, soon to have 14B FF and D60 in a few weeks
     
  8. R72K5

    R72K5 Banned

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    so ahve to swap yokes out...... hmmmmmm they make yokes for larger joints that wil fit splines ? from what ?

    wild,,,,

    run it til it breaks, fix it, and break it again!
     
  9. frito

    frito Registered Member

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    there are bigger yokes for just about all axles but of course the bigger the axle the bigger the yoke its gonna beable to take

    71 K5 Blazer,350/TH350/205 33's/ 2inch lift for now, soon to have 14B FF and D60 in a few weeks
     
  10. 72THING

    72THING 1/2 ton status

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    I broke my original half-ton (1310 u-joint) rear driveline trying to pull a friend up a hill. Anyhow, I had to find a rear driveshaft that took one-ton size (1350) u-joints. Then I had to buy a 1350 size rear output yoke for my NP205 transfer case and a 1350 size yoke for my D60 rear axle. So, all-in-all, it cost about $250 or more to completely convert my rear driveline from half-ton to the bigger one-ton stuff.-- Which I haven't broken yet (knock on wood). Hope this helps.

    Will

    '72 C10, originally 2WD, 6"Springs f+r, Dana 60 f+r, Lock-Right front, welded rear, 4.56s, 350, SM465, NP205, 39.5" TSLs, ORD crossover steering
     
  11. R72K5

    R72K5 Banned

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    wild stuff....

    coulkd only do tjhat with certaIn axles, couldnt with 12 bolt, etc

    run it til it breaks, fix it, and break it again!
     
  12. Ryan B.

    Ryan B. 3/4 ton status GMOTM Winner

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    Yes... they make bigger yokes for most rearends..(not sure about a 10 bolt though)... I converted my(1330) 12bolt pinion yoke to a <a target="_blank" href=http://communities.msn.com/Ryans1972Blazer/picsofryansblazer.msnw?action=ShowPhoto&amp;PhotoID=45>1350 u joint.</a> I paid about $165 for the yoke. You can get the beefier yokes from mark williams enterprises, or i think currie or some other place has em for a little cheaper.
    I also went to a local driveline shop that I am really happy with their work. I bought a flange ($100) for the rear of the NP205 transfer case, to convert the 1330 fixed yoke driveshaft, to a <a target="_blank" href=http://communities.msn.com/Ryans1972Blazer/picsofryansblazer.msnw?action=ShowPhoto&amp;PhotoID=247>1350 CV joint</a> driveshaft.
    The 1350 CV joint is what it expensive... I think about $150 more than a 1330 CV joint.
    For the fabricated new driveshaft (longer for my new suspension) 1350 CVjoint, 1350 U joint ready to be installed I paid about $550.

    So all in all I have about $800 in my rear driveshaft.[​IMG][​IMG]I'd say the rear driveshaft was one of the wisest investments i've made. I'm way happy with it.
    And the 12 bolt ring and pinion breaks (i'm on a roll for once a year with 35" tires[​IMG]) before the driveshaft or u joints ever will.


    [Real Men Don't Care About Gas Mileage Or Rapid Tire Wear!]
    1972 K/5
    Ryan B.
     
  13. R72K5

    R72K5 Banned

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    good stuff, you guys rule, no wi understand everything above, only Q i have now is what size yoke owuld be on the back of a 2wd CH465 from a 68 3/4 ton camper ?
    and i suppose a 72 C20 4 speed truck driveshaft woudl have same size U joints as what is used on the 68 Ch465 tranny output yoke ?
    1 1/16" is the diameter of cap head or the width across the joint ?

    and would NAPA know what 1310 or 1330 means if I said that to them ?


    i have some measuring and figuring to do

    thanks again!
     
  14. 79Beast

    79Beast 1/2 ton status

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    Rule number one: Don't buy Napa brand Ujoints. As I have said before, they are one step above zip tying the driveshaft to the rearend. If you have a decent tech man, he might know. The numbers we have been dealing with and Spicer part numbers. A 1410 is to a 1350 as a 1330 is to a 1310. It has the 1 3/16 cap, but is wider. Probably a 3/4 ton has 1350 Ujoints. Just go to Autozone or Advance Auto and get a BruteForce Ujoint for the rear of an '80 K30. If you have problems, PM me and I'll get more part numbers. If you can, just take the yokes with you or get the measurements on them.
     
  15. R72K5

    R72K5 Banned

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    thanks, yeah no problems with size or series determination or anything, just brands problems, gonna have ot worry about it later though, i already got what i did for ocnversion joint at axle yoke, but shaft is too short by about 2.5", so,,,,, hmmm

    thanks
     
  16. 70~K5

    70~K5 1/2 ton status

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    Then the sizes go up from there. From the trans to my #2 axle on my pete it uses 1760s and from #2 to #3 it uses 1710s. A friend of mine has 1810s on his rig. the #1 axle is the steering axle.
     

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