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CV Type U-Joint

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by DPI, Aug 7, 2000.

  1. DPI

    DPI 1/2 ton status

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    I am thinking about putting on a CV joint on my driveshaft. The reason for this is I am getting a vibration under acceleration. I do not have any lift, however the angle from my transfer case is quite severe as compared to the pinion side. I lowered my trasfer case by moving the spacers, that are below the transfer case crossmember, to between the crossmember and the frame. This got rid of the vibration but when I put it in reverse it feels like it is binding and there is a very strange noise coming from somewhere.
    Has anyone used a CV joint on a slip yoke?
    I can get this done with the new CV joint and having the shaft shortened and balanced for around $175.
    Is this worth it?
     
  2. Emmettology 101

    Emmettology 101 3/4 ton status

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    I would think you weould have other problems and wouldn't need this. There are guys here running a lot of lift with out a CV rear shaft and without having to drop the t-case.

    How is your pinion bearings and your output shaft bearings?

    Mike [​IMG]
    1982 GMC Jimmy - <font color=green>Emmett</font color=green>
    http://emmett.coloradok5.com
     
  3. DPI

    DPI 1/2 ton status

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    Everything seems to be tight. Everyone talks about both u-joint angles being the same degress. I have not measured it yet but just looking at it, the front ujoint is at more of an angle than the rear.
     
  4. I think the 4 wheeler mag used one in the stinky blazer project.How much lift do you have?Do you have anything on the rear axle to correct the pinion angle?I tried a transfer case drop on mine,it made a lot of strange noises!
    I took mine back off,most of the noise went away.
    I have a 4"lift with a 700/208 combo,there about the same as yours in length I think.I dont have any vibes from mine.
    Hope this helps.

    IF IT AINT BIG IT AINT BAD!!!!!!
     
  5. DPI

    DPI 1/2 ton status

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    The rear pinion angle is not bad. I would say 2-3 degrees if I had to guess. But the front angle is about twice that. Maybe 4-6 degrees. I moved the transfer case back to the frame and the noises while in reverse went away but the vibration came back under accelleration. It is also getting a slight harmonic vibration when your not accellerating or deaccellerating. The blazer has the three leaf springs on the front and sits considerable higher than the rear.
     
  6. Emmettology 101

    Emmettology 101 3/4 ton status

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    I have a TH350/NP208 combo which is about 1 3/4" 's shorter than bibad82k5's and I am running a 6" Superirde lift and I am running the stock driveshft with no transfer case drop and I dont get any vibes from the rear. I do get a few from the front, but that is because I need a new front driveshaft, my slip joint is wore out.

    Mike [​IMG]
    1982 GMC Jimmy - <font color=green>Emmett</font color=green>
    http://emmett.coloradok5.com
     
  7. Hey Emmett,just pack it ful of grease man!!!Thats what I did !LOL
    I think I did drink to much yesterday!!Feel to good for a monday!

    IF IT AINT BIG IT AINT BAD!!!!!!
     
  8. Emmettology 101

    Emmettology 101 3/4 ton status

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    Ya, it helps for a little while and then starts vibin again.

    Mike [​IMG]
    1982 GMC Jimmy - <font color=green>Emmett</font color=green>
    http://emmett.coloradok5.com
     

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