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Shackle flip vs taller rear springs.

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by KENT, May 29, 2001.

  1. KENT

    KENT 1/2 ton status

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    Aside from cost, what are the differences between a shackle flip vs other types of lift? Which is better?

    I want to build as much flex as possible with the minimum amount of lift. The plan is 35" tires and 12bolt rear end.
    Thanks
    Kent

    1989 K5
     
  2. thatK30guy

    thatK30guy 1 ton status Premium Member

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    Go for a total of 6" lift. Seems to be the best combo for most on this site.

    I would get the 4" shackle flip and 2" rear springs with 1" ORD zero-rate add-a-leaves. This 1" will help with the saggy-butt problem thats common with Blazers.

    When In Doubt, Whip It Out!
     
  3. LA91Blazer

    LA91Blazer Registered Member

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    I just finished my 6" lift as you discribed. 4" ORD shackle flip, and 2 1/2" SuperLift springs, 6" SuperLift springs up front. No saggy but. :-) If anything it sits a little higher. I'll post pics this weekend.
    L8R

    BlazingWolf
     
  4. BurbinOR

    BurbinOR 3/4 ton status

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    Kent, when you come get the axles you can see/feel what a 4" rear spring lift feels like on my K5.

    <font color=blue>'79 ONE TON TPI K5 - See it at---&gt;<A target="_blank" HREF=http://www.blazzinor.coloradok5.com>http://www.blazzinor.coloradok5.com</A>
     
  5. 1990K5

    1990K5 1/2 ton status

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    i just did my own shackle flip, it gave me almost 7 in of lift, w/ the swaybar disco's, skyjacker soft ride 6in in front, rancho 5012's, and rear shackles off a 92 chevy 3/4ton, im ramping just adout 1100. and it rides nice!
     
  6. 6.2Blazer

    6.2Blazer 1/2 ton status

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    In general a flatter spring (less arch) will give a better ride and be more flexible....assuming that the number and thickness of the leaves are the same. Because of this, my recommendation would be to at least start with the shackle flip and use the stock '89 rear springs. If you need more lift, you can always use the 1" blocks or lift springs (though I would think most rear lift springs would be at least a little harsher/stiffer than the stock springs).
    For 35" tires, my opinion is also that 4" of lift is plenty. Just keep in mind that if you flex the suspension out it will require some moderate fender trimming.
     
  7. FWP

    FWP CRS

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    My truck has a shackle flip and 4 degree shims. Still vibrates due to the pinion angle. I put 6" T/C rear springs on the K5 and have just as much flex as the SWB, with no driveline vibration.... ORD pieces are EXCELLENT, don't get me wrong, but in this case, I didn't like the results.

    <A target="_blank" HREF=http://fwp4x4.coloradok5.com>http://fwp4x4.coloradok5.com</A>
     
  8. Pure Insanity

    Pure Insanity 1/2 ton status

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    ok i have question.my blazer has a 3" bodylift on top of the 6" springs,to clear 38's,i looked at doing a shackle flip but my shackles will be right out in clear view/harms way.if i didnt have the b/l it would tuck up under the bumper.im thinkin itll look like a$$ to have em out in plain view.does anyone else have the flip w/ a b/l??and if so can i see some pics of the rear and side to see how it looks.id like to lose the blocks in the rear.

    PURE INSANITY
    86 blazer see it at:<A target="_blank" HREF=http://www.zing.com/album/pictures.html?id=4292792569>http://www.zing.com/album/pictures.html?id=4292792569</A>
     
  9. KENT

    KENT 1/2 ton status

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    I plan on triming the fenders as muchas I can to accomendate as large a tire size as possible. If I could get away with it I would run 36" with no lift.


    1989 K5
     
  10. CaptCrunch

    CaptCrunch 1/2 ton status

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    I'm not really a big shackle flip guy. I have not been sold on it and I keep hearing problems w/ vibrations after the flip.... especially w/ the slip yoke cases. I still feel the whole ride issue is kinda overdone. A full size solid axle truck lifted up running big tires ain't gonna ride like a caddy, nor should it. Obviously softer springs yield a bit nicer ride, but at the cost of body sway and roll. I'd rather be a bit stiffer with larger tires personally.

    -Mikey
    1987 Chevy K5 Blazer- 350 TBI
    <A target="_blank" HREF=http://www.geocities.com/milnerlives_2000/blazer.htm>http://www.geocities.com/milnerlives_2000/blazer.htm</A>
     
  11. californiak5

    californiak5 1/2 ton status

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    With all this advice I just thought I would throw mine out here.

    I think it is a matter of what YOU want to achive. If you want low center of gravity with good flex go with the 4 inch shackle flip, 36" tires and some cutting. If you want it to handle better on road than off road go with the all spring 6" lift, 36" tires and no cutting.

    From what it sounds like you want a great Off road K5, so I would go with the shackle flip. I have the shackle flip on my truck and love it. Yea, I had a few vibe problems in the start but a good 1 ton C/V shaft from <A target="_blank" HREF=http://www.highangledriveline.com>http://www.highangledriveline.com</A> cleard that right up. If you are planning on going with a doubler down the road you are going to be getting new shafts anyway so that is not a issue.

    Thats just my $.02................Take it, Leave it or throw it away. It doesn’t matter.

    See Ya,
    Keith

    [​IMG] <font color=green>Born to Drive My K5</font color=green> [​IMG]
     

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