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T-case lowering?

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by BozoWise, Jun 27, 2002.

  1. BozoWise

    BozoWise 1/2 ton status

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    I just flipped the rear shackels and removed the blocks to get a 6" lift in the rear. Going to get a set of 6" TC springs for the front. Should I lower the t-case on my fulltime case? If so where can I get a kit? Can I build one? Thanks for the info.
     
  2. SkulzNBonz

    SkulzNBonz 1/2 ton status

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    On my 4 inch, I just used the 1 inch "spacers" that GM supplied for the transfer case x member mounting bolts. I don't know if a six inches will need more than 1 inch drop.

    John
     
  3. mudhog

    mudhog THEGAME Staff Member Super Moderator

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    All you need to do to lower it 1 inch is use the spacers that are already there /forums/images/icons/grin.gif they will be on top above the frame just move them between the frame the cross member and your set /forums/images/icons/smile.gif
     
  4. BozoWise

    BozoWise 1/2 ton status

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    Thanks should an inch do the trick? I'll have to check and see if my 79 has the spacers there.. Will check in the AM
     
  5. mudhog

    mudhog THEGAME Staff Member Super Moderator

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    it should do it but each truck is different lol all blazers have the spacers from the factory unless someone took them out /forums/images/icons/shocked.gif
     
  6. chevyfumes

    chevyfumes Court jester

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    Watch for the muzzleflash!
    If you don't have the spacers ... I think you can just use 1" square tubing. Like Mudhog said all rigs are different....
     
  7. BozoWise

    BozoWise 1/2 ton status

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    Thanks guys ;-)
     
  8. Blazin Ed

    Blazin Ed Registered Member

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    After I lowered my transfer case 1" it got rid of the low speed vibration but now when I accelerate in reverse it makes a loud grinding sound on the firewall! Any else experience something like this?
     
  9. BozoWise

    BozoWise 1/2 ton status

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    Mine hasn't yet, but I also have a body lift on mine.

    All hte spacers were there all I needed was the impact w/ 11/16 and a 5/8 backup took me about 20 minutes w/ 2 smoke breaks ;-)
     
  10. trailblazer87

    trailblazer87 1/2 ton status

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    Make sure the driveline is not rubbing against the muffler heat shield. The torque in reverse might be kicking the tcase over just far enough for light contact, when the t-case is stock height it is above the heat shield.
     
  11. tori89k5

    tori89k5 1/2 ton status

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    Another thing to note.... As most of us have lowered our T-cases this way... (including myself) these lengths of tubing and their little contact patch between the frame and the crossmember really take some of the strength out of the crossmember. It no longer contacts the frame in a smooth wide flat area to keep things rigid, I think this allows some exta frame flex. I will be removing mine and using some nice flat, square thick wall tubing to get it back into direct contact with the frame.
     
  12. BozoWise

    BozoWise 1/2 ton status

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    Great point Tori
     
  13. trailblazer87

    trailblazer87 1/2 ton status

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    Skyjacker sells a lowering kit for about $25, it comes with new grade 8 bolts, nuts, washers, and 4 grade8 plates that fit in between the frame and crossmember, its what I did to mine.
     
  14. Blazin Ed

    Blazin Ed Registered Member

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    Thanks for the advice Trailblazer, I'll check the muffler heat shield when I get home from work!!!
     

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