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shackle flip aftermath

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by laketex, Feb 11, 2002.

  1. laketex

    laketex 3/4 ton status

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    Hey guys, trying to get my shaft angles lined out. I put new springs on last night and 3 degree shims from the back side. Think I put them in the wrong side cause now the pinion is in line with the driveshaft. DOH!!! Oh well no biggie to switch them. But the real pita is that the d/s ears on the t/c side want to hit from the angle. What's the solution? Do I need to drop my tcase an inch with the spacers? In doing this, anyone have any problem with distributor to firewall clearance. Thanks in advance for any help.

    Bryan

    Sherman, Tx
    <font color=red>The blazer's almost on the road....anyone got tree fiddy?</font color=red>
     
  2. Kyle89K5

    Kyle89K5 1/2 ton status

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    When I dropped mine I had no problems. Mine wasn't binding up much, but it did vibrate like MAD!!! After the drop I've still got tons of room back there.

    Kyle
    89K5
     
  3. jekbrown

    jekbrown I am CK5 Premium Member GMOTM Winner Author

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    yeah, i finally test drove my rig after the shack flip + revolver + 1" zero rate install (no shocks out back, but its all good!)...got some nasty vibes even at 10 mph. Guess I need to drop the x-case and maybe get some shims. I'm a noob to shims...my old lift blocks were angle cut and I didnt need them...oh well, something new to learn I guess.

    J


    See the on-going build up of my '85 Jimmy! <a target="_blank" href=http://community.webshots.com/user/jekbrown>http://community.webshots.com/user/jekbrown</a>
     
  4. Mudstud

    Mudstud 1/2 ton status

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    We're talking about a 79 K5 right? How much lift? Are you running a cv in back?

    "Think I put them (shims) in the wrong side cause now the pinion is in line with
    the driveshaft." --If you're running a cv shaft that's exactly what you want. If not, then you need to take an angle finder and hold it up against the flat side of the pinion yoke (where the holes are for the u-joint straps and take a reading. Then do the same at the t-case end. There should not be more than 2 degrees difference between them. If there is, then you decide what to change. These readings are taken with the truck on level ground of course and not jacked up. Get back to us if you don't figure it out.

    Mudstud
    <a target="_blank" href=http://communities.msn.com/OffroadK5s/6superliftand33s.msnw>http://communities.msn.com/OffroadK5s/6superliftand33s.msnw</a>
    76K5 6" with 33s, sb400/350/203parttime/3.73-D44/GM12bolt
     
  5. laketex

    laketex 3/4 ton status

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    Yep it's a 79. Thanks. I was just being a dumbass and not thinking clearly when I put the shims in. It's the stock rear driveshaft for now without a CV. I'm going to lower the case and see what that gives me, but I'm pretty sure I'll have to flip the shims too. D'oh!!!

    Sherman, Tx
    <font color=red>The blazer's almost on the road....anyone got tree fiddy?</font color=red>
     
  6. Mudstud

    Mudstud 1/2 ton status

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    Get an angle finder and take the readings so you know where you stand. Otherwise you're just guessing.

    Mudstud
    <a target="_blank" href=http://communities.msn.com/OffroadK5s/6superliftand33s.msnw>http://communities.msn.com/OffroadK5s/6superliftand33s.msnw</a>
    76K5 6" with 33s, sb400/350/203parttime/3.73-D44/GM12bolt
     
  7. yunit

    yunit 1/2 ton status

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    My truck has a shackle flip with stock springs and I dropped the case an inch. I also angled my pinion down about 3 degrees. I recently took it out for a test ride on a section of highway by my house that has an incline doing 75 and she never vibrated at all. Good luck.

    1987 Jimmy Sierra Classic, Palisades Park, NJ 07650
    <a target="_blank" href=http://coloradok5.com/gallery/yunit>http://coloradok5.com/gallery/yunit</a>
     

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