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Hi everyone! I need some info..

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by **DONOTDELETE**, Jul 6, 2001.

    I just found this awesome site last night and I hope to make alot of new friends here.

    I have a 89 Chevy K5 Blazer with a 350 tbi, 700R4 trans, NP 241 transfer case and 3.73 gears with a factory limited slip in the rearend. I have a 4" Tuff Country suspension lift and 33" BFG Mud Terrains with 10" aluminum baja wheels.

    What is the fix for the slight vibration I have because of the 4" lift? Is it the SYE kit or is there a CV style driveline available for the rear driveline? I don't do any rock crawling, I wheel in some mud, but most of my wheelin is in snow. Any help would be greatly appreciated!

    Thanks, Doug

    4 wheelin's not a job, it's an adventure!
     
  1. rocko

    rocko 1/2 ton status

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    If you haven't lowered the transfer case already.. you should.
    My truck had the same problem til I lowered it..
    There are spacers above the frame rail, or below the crossmember.. just loosen everything up.. and put the spacers between the frame and crossmember..
    It's a very inexpensive fix... and it works.. [​IMG]
    Welcome aboard also...
    You'll love it here..


    A well armed society is a polite society.UPDATED <A target="_blank" HREF=http://www.rocko.rockcrawler.com>http://www.rocko.rockcrawler.com</A>
     
  2. 4xmac

    4xmac Registered Member

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    Doug,welcome to CK5. To answer your question you can go several ways. Sence you don"t do any heavy wheeling right now, you can just drop the T-case down about 1" . There are too other ways of eliminating your vibration that you have allready said. They will also work but a CV shaft and SYE will cost alot more money. Hope this helps

    MAC
     
  3. Pugsley

    Pugsley 1/2 ton status

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    Welcome aboard! Like Rocko said, try lowering the transfer case before putting money in a driveline - You just may be surprised at the effect you get for free[​IMG]

    <font color=red>Cripplefight!!</font color=red>
    <A target="_blank" HREF=http://pugsley.alloffroad.com>http://pugsley.alloffroad.com</A>
     
  4. Thunder

    Thunder 3/4 ton status

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    I cant add to what anyone else said. Just wanted to say Welcome!
    I have an 89 also. Similar to yours but 2" lift.

    <font color=orange>GOT HORSEPOWER?</font color=orange>
     
  5. I forgot to mention that I lowered the transfer case 1" with some heavy wall square tube. That helped but it didn't take all the vibration out.

    4 wheelin's not a job, it's an adventure!
     
  6. BigTex

    BigTex 1/2 ton status

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    I have a 4" lift on mine and used to have 33s and lowering the t-case took care of most of the vibrations. How are your u-joints?

    <A target="_blank" HREF=http://www.thehungeronline.com>http://www.thehungeronline.com</A>
     
  7. rocko

    rocko 1/2 ton status

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    Did you put your driveshaft in wrong? might want to disconnect it again.. and turn it 180 Degrees..
    Forgot to mention mine did this also...
    It's simple.. but hey.. it could work..


    A well armed society is a polite society.UPDATED <A target="_blank" HREF=http://www.rocko.rockcrawler.com>http://www.rocko.rockcrawler.com</A>
     
  8. K5Jimmy

    K5Jimmy 1/2 ton status

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    I'd check the Tranny mount, check that the driveshaft is in phase.......is the vibration mostly in the seat, or in the steering wheel?....my 89 is nearly identical to yours....I get a bit of vibration with my 10" Rallies w/33 BFG Muds, but no vibration with 8" Rallies and AT's.....Most everyone in here has dealt with vibration to some extent....Lots of really good advice/help on this site.....Welcome aboard...JD

    Stuck?...Hell no..I still got some gas left..
     
  9. BurbinOR

    BurbinOR 3/4 ton status

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    Sounds like it could be a u-joint - since you said you already lowered the T-case.

    Another Oregonian - cool! Gresham here, lots of us NW'ers on this board. Where are you located in Oregon?

    <font color=blue>'79 ONE TON TPI K5 - See it at---&gt;<A target="_blank" HREF=http://www.blazzinor.alloffroad.com>http://www.blazzinor.alloffroad.com</A>
     
  10. I just put 2 new hi performance u joints in the rear drive line. I live in Weston, Oregon which is in the NE corner of the state. My rear driveline slips into the NP 241 t case, there isn't any slip yoke in the shaft. How would turning it 180 degrees help? I'm just curious what benefit that would be.

    Thanks, Doug

    4 wheelin's not a job, it's an adventure!
     
  11. jimmyjack

    jimmyjack 1/2 ton status

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    Check the obvious. I just had 4 ounces of weight removed from my back tires after a rebalance.

    "My blazer may be slow, but it goes faster at higher speeds"
    <A target="_blank" HREF=http://community.webshots.com/user/blazerk5>http://community.webshots.com/user/blazerk5</A>
    Jim
     
  12. rocko

    rocko 1/2 ton status

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    In Refence to :
    _____________________________
    check that the driveshaft is in phase
    _____________________________
    If you remove the drive shaft.. you're supposed to mark the yoke and driveshaft to make reference to the way you took it out.. then it's supposed to go back in the same way you took it out.. by "lining up the marks" to the yoke and driveshaft..
    Don't ask me why.. but mine did this when I removed mine.. noticed some vibrations.. I removed and turned it 180 degrees and it stopped..
    Hope this helps..

    A well armed society is a polite society.UPDATED <A target="_blank" HREF=http://www.rocko.rockcrawler.com>http://www.rocko.rockcrawler.com</A>
     
  13. mpascino

    mpascino 1/2 ton status

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    Welcome aboard!! Did you use blocks or new springs in the rear? Is the rear axle shimed in any way? If it is not and the angel between the t-case and the shaft and the angel between the shaft and the rear are not similar you will get a vibration..... Let us know!!
    Mike

    You call that dirty!?
     
  14. riz

    riz 3/4 ton status

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    <font color=purple> Check your transfer case mounts in general.....they could be worn and the lowering wouldn't do as much good if they're shot.
    Welcome aboard !

    L8r,
    . Riz . <A target="_blank" HREF=http://www.geocities.com/rizmonkey>http://www.geocities.com/rizmonkey</A>
     
  15. Itali83

    Itali83 1/2 ton status

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    I just did my tranny mount in my stock 87 Jimmy. took out all of my bad vibes. if you can grab tail shaft housing and move the transfer/tranny, it is bad, but a new one from GM, you can't get a poly one [​IMG] But it mad a HUGE difference on my truck. Welcome aboard!!!!!
    Ben 87 Jimmy
     
  16. riz

    riz 3/4 ton status

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    <font color=purple> Oooops, I meant tranny mounts .........what the hell is wrong with me tonight ???? Don't answer that !!

    L8r,
    . Riz . <A target="_blank" HREF=http://www.geocities.com/rizmonkey>http://www.geocities.com/rizmonkey</A>
     
  17. I used 4" blocks in the rear and I don't have any shims in the rear axle. I know the angle of the ujoint at the t-case has more angle on it then the one at the rear end. The ujoint at the rear end looks pretty close to being right.

    Thanks, Doug

    4 wheelin's not a job, it's an adventure!
     
  18. wayne

    wayne 3/4 ton status

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    Welcome to the site. If all else fails you can always take the expensive route to fix it. About $700 for a slip yoke eliminator kit and a rear cv shaft from Jess at High Angle Driveline.
    <A target="_blank" HREF=http://highangledriveline.com/>http://highangledriveline.com/</A>

    <font color=blue>Wayne<font color=blue>
     
  19. shawnboy

    shawnboy 1/2 ton status

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    Nothing to say that hasn't already been. Welcome aboard.
    Shawnboy.

    If you are having too much fun it's probably illegal.
     

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