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degree shims in front???

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by CaptCrunch, Feb 21, 2001.

  1. CaptCrunch

    CaptCrunch 1/2 ton status

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    Just got a quote on a BDS lift and he says it uses degree shims in the front to help correct driveline angle. I thought I heard here on the board this is bad? Will this affect the steering? What are my other options for the driveline angle other then a CV shaft?

    1987 Chevy K5 Blazer- 350 TBI
     
  2. DPI

    DPI 1/2 ton status

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    The front 5.5" BDS springs I purchased did not have shims on them. The rear springs did have the shims attached.

    [​IMG]
     
  3. Butch

    Butch 1/2 ton status

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    If you run interstate speeds with shims in the front it will wander all over the place. It takes too much caster out. If you want to really fix it you have to cut and turn your knuckles then you get the best of both worlds

    I thought I was wrong once,
    but I was mistaken
     
  4. Emmettology 101

    Emmettology 101 3/4 ton status

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    I have been running shims in the front for about 2 years... They were already attached to my 6" superift springs.... They say not run more than 3 dgrees in the front.

    HTH

    Mike [​IMG]
    See <font color=green>EMMETT</font color=green> -&gt; <A target="_blank" HREF=http://emmett.coloradok5.com>http://emmett.coloradok5.com</A>
     
  5. DPI

    DPI 1/2 ton status

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    How does it handle at hiway speeds? What about braking, does it pull to the left or right?

    [​IMG]
     
  6. CaptCrunch

    CaptCrunch 1/2 ton status

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    I know Superlift has them built in... but it is going to vibrate like a sun of gun if the angle isn't corrected on the front... so how are you supposed to get 4x4 vibration free? Buy 2 CV axles at 300 a piece? Ouch!

    1987 Chevy K5 Blazer- 350 TBI
     
  7. ftn96

    ftn96 1/2 ton status

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    If Im not mistaken you should have a CV drive shaft already in the front. Not sure about your year model though. Mine is a 90 and I have one, and my skyjackers didn't come with adny shims for the front. But with the Big dix 5.5 i dont know.
    But check and make sure you dont already have a cv in the front.

    Will work for beer, parts and tools.
    90 Jimi,350/700R4/241/10bolts/4.10's/33's/4"
    <A target="_blank" HREF=http://www.nashvillek5.freeservers.com>http://www.nashvillek5.freeservers.com</A>
     
  8. Impex

    Impex 1/2 ton status

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    Would it still wander all over the road if you ran a 2-3 degree shim with crossover steering?

    [​IMG] [​IMG]
     
  9. CaptCrunch

    CaptCrunch 1/2 ton status

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    How does it work w/ the skyjackers? (looking at them as well) Just spring and go? Stopped on the way home from school and looked at a nice rig and it did have shims in the front? yeah it is the double u-joint design in the front....

    1987 Chevy K5 Blazer- 350 TBI
     
  10. bigblue

    bigblue 1/2 ton status

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    My rear gave me hell-a-vibration with my 6 inch lift but in the front i have no shims and no vibration whatsoever. Ii have been at highway speeds too in 4H ( even with my front driveshaft a little on the short side)

    baja surf nazi -...A late storm NEVER comes...

    [​IMG]
     
  11. fr8train

    fr8train 1/2 ton status

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    I ground the pads ground off. Then made new ones out of 2x2 box/square steel at the required angle. I have no wander at 75 mph. And my pads are as buff as my axles plus it gives you 1/2" of lift aside from the 3/4" lift of the 1-ton axle.

    [​IMG]
     
  12. ftn96

    ftn96 1/2 ton status

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    All right Capt Crunch---On my Skyjacker 4" springs the fronts come with no shims. And they are reversable, being that either end of the spring can go toward the front or toward the back, at least for my 90, but your 87 should be the same.
    And if you go with springs in the rear they will come with a shim already installed in the spring pack. If you go with the blocks, they to have a slant already incorporated in it to copy the sping shim. But NO, I have no shims in the front. The only thing I have noticed when using 4 HI is that when Im gassing it, everything is smooth, but if I let off the gas real quick the front end shutters a little bit. I haven't gotten up there to check all my u-joints and stuff yet, But I have the CV shaft in the front and that should fix any driveline vibration from the lift.
    You will also need to get some brake lines, but if funds are short, you do with the old ones, but down go flexing yet till you get the new ones. But for street driving you'll be ok.
    If you have any more ??'s about the 4" skyjackers I'll be glad to tell you what I know in relation to what I've been through with my rig. So far Im happy as can be with them. Although it did take some patience to get the vibrations within limits. I had to play with the t-case spacers a little bit.

    Will work for beer, parts and tools.
    90 Jimi,350/700R4/241/10bolts/4.10's/33's/4"
    <A target="_blank" HREF=http://www.nashvillek5.freeservers.com>http://www.nashvillek5.freeservers.com</A>
     
  13. CaptCrunch

    CaptCrunch 1/2 ton status

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    Well I called up BDS and talked to Glen their tech guy and he told me to leave them out. Said w/ a t-case drop you should be ok... I just hope I don't have problems when I drop the t-case like some of the guys here. What about springs that have degree shims built in like superlift? I know Glen and superlifts talk about getting an alignment after this is done. Is it possible some are just throwing in the shims and not aligning it so the chamber and stuff is all whacked? That would seem to make sense for it going all over.

    ftn96... you have the softrides? How you like them? I hear they are kinda rough riding... but trying to grab as many opinions as I can. I know motors, tannys, etc... but when it comes to actually installing a 6" lift kit I'm a rookie. Have found a lot of great help here on K5 thus far.

    1987 Chevy K5 Blazer- 350 TBI
    [​IMG]
     
  14. ftn96

    ftn96 1/2 ton status

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    Rough????? Well, Im not sure what all you all mean by ruff.
    But these springs are...ahhhh, lets see. soft as HELL... I love them. Very smooth. Very bouncy ride. I mean if I hit a big pot hole, its like was that a beer can or something we just ran over. The bounce can be annoying if your trying to drink out of an open top container, but thats trivial. I still have the sway bar connected, and I dont get much body roll at all. I still take off ramps and such at regular speeds.
    But anything you install is going to be like totally different than what your use to. SO expect a big difference. But I really like the ones I have.

    Will work for beer, parts and tools.
    90 Jimi,350/700R4/241/10bolts/4.10's/33's/4"
    <A target="_blank" HREF=http://www.nashvillek5.freeservers.com>http://www.nashvillek5.freeservers.com</A>
     
  15. Shawn

    Shawn 1/2 ton status Premium Member Author

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    I agree with Glen and I would leave the shims out. When I first did my Skyjacker lift, I left the shims on and that thing was all over the road. Soon as I took them out, it was much better. It's better to have the stock caster in the front. At the same time, I'd suggest ORD's HD front shackles. I've been finding a few out there (like Pete) that have broken the stock front shackles.

    Shawn
    87 K5
    few mods[​IMG]
    <A target="_blank" HREF=http://www.off-road.com/chevy>http://www.off-road.com/chevy</A>
     

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