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Skyjacker Lift

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by blazer_87, Oct 3, 2001.

  1. blazer_87

    blazer_87 Registered Member

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    I am looking at a skyjacker 4" lift system. What is the difference between the 52" rear springs and the 56" rear springs. What are the pros and cons of each?
     
  2. mnstr_fx

    mnstr_fx Registered Member

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    The 52" springs came on 1/2 ton trucks only. The 56" springs are for the 3/4 and 1 ton trucks. The main difference is that the extra 4" is behind the the axle. Basically, the axle stays in the same spot, just the rear shackle location needs to be moved ~4" to the rear.

    The benefit? The main benefit is that you have a longer spring with which to flex. You will get some more flex by having a little longer spring, but you can also get more flex by other means, (i.e. different shackle design, length, pivots, compression vs tension etc...)

    I went with a shackle flip and ended up doubling the rear shackles to offset my spring length difference.

    76-82 Chevy Pickup / Blazer - K5-K10-K30
    90' TBI
    TH 400
    203 / 205 Doubler
    Dana 60, Corp 14 - 4.88'd - Detroit Locked
     
  3. blazer_87

    blazer_87 Registered Member

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    I have an 87 blazer. Do you think I should spend the extra money for the flex and get the 56" or just stick with the 52"?
    I am pretty new to this game and dont know alot about suspension and what it takes to move the shackles, but I am learning quickly. Thanks a lot!
     
  4. MudFrog

    MudFrog 1/2 ton status

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    I'd recommend sticking with 52" springs for now. Unless you feel up to challenge.

    89 K5 Silverado
    <a target="_blank" href=http://mudfrog.rockcrawler.com>http://mudfrog.rockcrawler.com</a>
     
  5. jackedjimmy350

    jackedjimmy350 1/2 ton status

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    i am happy with my 52'' skyjackers!

    [​IMG]Mash Out![​IMG]
    82 Blazer 1 Ton "Big Nasty"
    78 Jimmy 3/4 Ton
    <font color=red>"Red Dawg" </font color=red>
     
  6. michaelm

    michaelm 1/2 ton status

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    go look at your frame it may already be predrilled for the longer hanger location

    sorry forgot this was a blazer forum for a minute there.
    pickups can have the extra holes
    <P ID="edit"><FONT class="small">Edited by 77chev on 10/03/01 11:11 AM.</FONT></P>
     
  7. 84_Chevy_K10

    84_Chevy_K10 Banned

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    All longbox 1/2 tons are drilled for the 56" springs because:

    1. 1/2 ton and 3/4 ton frames are identical
    2. Some 1/2 tons came with 56" springs.

    If you already have 52" springs, I'd go with the shackle flip. If from there, you desire more height, I'd still keep the 52" springs, just get lift springs.

    Tim
    '84 Chevy K10, lifted, loud, fast, and 3/4 ton axles
     
  8. 502Burban

    502Burban 1/2 ton status

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    Just for the record, some 3/4-ton trucks did come with the 52" springs. My 3/4-ton Suburban has them [​IMG]. Unfortunate for me, as I would rather have the 56" pieces. The rear spring mounts can be moved back 4" to accomodate the 56" springs; just too much effort for a minor benefit, IMO.

    Robb
    '73 GMC Suburban - 502DFI
    <a target="_blank" href=http://community.webshots.com/user/robbrj>community.webshots.com/user/robbrj</a>
     
  9. TXsizeK5

    TXsizeK5 1/2 ton status

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    When you say 52" thats eye to eye straight across.. or do you actaully get a tape measure and get the legnth of the actaull spring...

    6in 87' K5 w/ 35" BFG muds.
    305/Sm465/ NP208, 4.11's coming soon.
    Kn filter
     
  10. chevrules

    chevrules 1/2 ton status

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    that is 52" across the spring,not straight across

    chevrules...always has and always will
     
  11. RGF

    RGF 1/2 ton status

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    You might consider going with a ORD shackle flip if you want some better flex instead of a spring with alot of arch in it. I used stock 56" springs on my Blazer with the flip and it worked out pretty good, just reverse the flip brackets and you will only need to move them back on the frame two inches because of the off-set they have built into them.In fact one of the two bolt holes on the bottom of the frame will line up at the new location so you can bolt it on with one bolt to use as a drill guide for the rest of the holes.
    You said that you were new to this stuff so maybe this is nothing you want to get into but you asked for opinions!!!

    RGF
     
  12. blazer_87

    blazer_87 Registered Member

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    Thank you! I will definately look into your suggestion. I am exploring all my options. I havent decided if I will make this my off-road only vehicle or daily driver.
     
  13. 84_Chevy_K10

    84_Chevy_K10 Banned

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    Either way a shackle flip is the best way to gain 4" of height.

    Tim
    '84 Chevy K10, lifted, loud, fast, and 3/4 ton axles
     

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