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!!! PICS of ORD-Rear Shackle Flip Install..!!!

Discussion in 'OffRoad Design' started by Greg72, Dec 2, 2001.

  1. Greg72

    Greg72 "Might As Well..." Staff Member Super Moderator

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    I am a tired dude.....but I am SO happy. I spent the weekend installing the ORD-Rear Shackle Flip kit on my '72 K5. I now have all new greaseable bushings (Front and Rear), the ORD HD-Front Shackle and the Rear Flip completed.....it rides much better now.....softer and more pleasant. I'm not sure about flex....but I'll let you know when I get a chance to try it out.

    BTW -> A curious thing about the rear shackle flip....I didn't have to pull the tank out like I was expecting. All the bolt holes I needed to get at were reasonably accessible even with the tank in place. Maybe dropping the tank is only a '73+ up Blazer thing?

    Anyway....I posted bunch of photos and re-organized all my albums so they are more logically laid-out....follow the link below to see for yourself!!!! [​IMG]



    -Greg72

    '72 K5 Blazer - 427BB/TH350/NP205/6" Lift/35x12.50's
    <font color=blue>See it here: </font color=blue><a target="_blank" href=http://coloradok5.com/gallery/albun38>http://coloradok5.com/gallery/albun38</a>
     
  2. 2Dogs

    2Dogs 1/2 ton status Premium Member

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    Very nice! And I liked it a bunch before even. Way cool. I need a full convertible someday.....

    Can you tell me more about the tank you will be putting in? I'm checking the site now.

    Congrats!

    Dave

    Horn Broken... Watch For Finger.
    <a target="_blank" href=http://coloradok5.com/gallery/Daves-Pics>http://coloradok5.com/gallery/Daves-Pics</a>
     
  3. jeffer

    jeffer 1/2 ton status

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    Greg72,
    I just want to say great job on the photo layout and descriptions. Very informative.
    I also have a '72 and am looking to do a similar install. I am curious as to what front springs that you used. Does the truck now sit level? I've heard several people say to use 2.5" frt and 4" rear to get a level truck.
    I have also heard that doing the rear shackle flip puts the rear axle a little forward of center in the rear wheel opening. From your pictures, I can't tell much difference in the axle position with the shackle flip versus the lift blocks. Did you notice this? Also, are those your original springs?

    Thanks for the posting,
    Jeffer.
     
  4. Blazinit

    Blazinit Registered Member

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    Fantastic! Very good job on the pics. Looks like you're almost ready to put that 14FF in!!!

    '84 K5 Blazer 4"Rancho R/B w/Quad Diamond Back front 350/TH700r4/NP208/35" BFG AT/10 bolt F&R
    Washington, USA
     
  5. Greg72

    Greg72 "Might As Well..." Staff Member Super Moderator

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    Jeffer,

    I think the front springs are Rough Country (possibly Trailmaster)....I wish they were Tough Country though...(softest). The story with lifts seems to be that for Blazers you should use more lift in the rear to make it sit level due to the weight that the Blazer has versus a pickup.....However, I have what I believe are stock springs out back (the bushings sure LOOKED 30 years old![​IMG]) and with the 4" Flip it still sits level. Hmmmmmm....

    The shackle flip does seem to move the wheels forward in the wheel well slightly. I can't really blame the kit for that....I think the wheels were slightly forward even before the flip. It's not overly noticeable, but I think as you add larger tires it will make it more obvious...I think that on 1st Gens, the clearance problems are usually on the front edge of that opening anyway.....so it may have been offset slightly forward even from the factory.

    Since my driveshaft actually got SHORTER with this flip kit, I can probably mess around with trying to move the axle back a bit, and not worry about driveshaft problems.



    -Greg72

    '72 K5 Blazer - 427BB/TH350/NP205/6" Lift/35x12.50's
    <font color=blue>See it here: </font color=blue><a target="_blank" href=http://coloradok5.com/gallery/albun38>http://coloradok5.com/gallery/albun38</a>
     
  6. Greg72

    Greg72 "Might As Well..." Staff Member Super Moderator

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    Dave,

    What do you want to know about the tank?

    I've been studying the mounting setup and looking at my truck trying to figure out ways to really "tuck it under" and take advantage of the 2" body lift I have. I've heard that the NWMP tanks sometimes have interference issues with 14-Bolt Rear axles IF you use an aftermarket "high-capacity" diff cover like ORU's....that's what's motivating me to spend a little more time to think things over......It's easy to mount it higher (just cut and re-weld the mounting ears on the tank)....but there is a rear crossmember that needs to be moved or customized also...

    Plus, once the tank has gas in it....nobody will be willing to weld on it anymore!!!! [​IMG] I have to do my changes first.....



    -Greg72

    '72 K5 Blazer - 427BB/TH350/NP205/6" Lift/35x12.50's
    <font color=blue>See it here: </font color=blue><a target="_blank" href=http://coloradok5.com/gallery/albun38>http://coloradok5.com/gallery/albun38</a>
     
  7. Shorts

    Shorts 1/2 ton status

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    very good job on the install and commentary [​IMG]

    <font color=blue>Shorts</font color=blue>

    '94 K1500
     
  8. 2Dogs

    2Dogs 1/2 ton status Premium Member

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    That is perfect - thanks!

    Are you able to tell how much clearance you will lose or gain?

    I want a tank bad! After I read your post I looked at the website - the tank for my year is 43 gallons!!!

    One of these day I would like to come down and check out your truck.

    Dave

    Horn Broken... Watch For Finger.
    <a target="_blank" href=http://coloradok5.com/gallery/Daves-Pics>http://coloradok5.com/gallery/Daves-Pics</a>
     
  9. Greg72

    Greg72 "Might As Well..." Staff Member Super Moderator

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    Dave,

    I think the way they get more "gallons" is by making the tank TALLER (which means it will hang lower) and by creating that triangular shaped extension that tucks underneath the rear frame support....my stock tank just drops straight down at the frame support area.

    My intention is to raise the tank to offset the fact that it hangs lower.....so hopefully no ground clearance lost [​IMG] and then move it towards the rear bumper to provide a bit more clearance for the 14 Bolt diff cover...

    That's the theory anyway.....I'll see what I actually end up with when the time comes.



    -Greg72

    '72 K5 Blazer - 427BB/TH350/NP205/6" Lift/35x12.50's
    <font color=blue>See it here: </font color=blue><a target="_blank" href=http://coloradok5.com/gallery/albun38>http://coloradok5.com/gallery/albun38</a>
     
  10. ImpalaSS

    ImpalaSS 1/2 ton status

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    AWESOME! nice right up... seems about what i expect the job to be..... i got a ? for you..... you have a 4" suspensien lift and 2" body lift right? if you were to do it again would you have done a 6" suspensien?
    im debating on doing a 4" suspensien and 2" body lift or a 6" suspensien...... thanks

    68 SWB 4x4 1 of 1,449 made 327, 465 4 speed, rockwell tcase, dana44, 14 FF, <a target="_blank" href=http://communities.msn.com/68K10>http://communities.msn.com/68K10</a>
     
  11. Great write-up on the install. Looks like you got through your install a lot quicker than I did - course I usually don't get out to work on my truck until my kids are asleep and then I only get to work for 2-4 hours.

    1969 C20 4x4
    4" lift, 35x12.50x16 Super Swamper SSR's
     
  12. 2Dogs

    2Dogs 1/2 ton status Premium Member

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    Hey 68,
    4" front springs
    4" shackle flip
    1" zero rates all around
    1" body lift

    This isn't the cheapest way but it will give you a good ride with the flat springs and you still get the 6" clearance.

    Dave

    Horn Broken... Watch For Finger.
    <a target="_blank" href=http://coloradok5.com/gallery/Daves-Pics>http://coloradok5.com/gallery/Daves-Pics</a>
     
  13. Greg72

    Greg72 "Might As Well..." Staff Member Super Moderator

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    SWB68,

    When I bought the truck it already had the 4" Suspension Lift and 2" body Lift.....the body lift was more a function of getting clearance for the big block than anything (I think).....However, most people agree that the less arch your springpacks have, the softer it will ride....and better it can flex. If that's really true, then given the chance I'd probably do it the same way again.....

    Or maybe the way that was just suggested in this thread....use a 1" body lift, and 1" Zero-Rates instead of the 2" Body Lift.... I think it comes down to personal preference, and your own feelings about body lifts in general! [​IMG]



    -Greg72

    '72 K5 Blazer - 427BB/TH350/NP205/6" Lift/35x12.50's
    <font color=blue>See it here: </font color=blue><a target="_blank" href=http://coloradok5.com/gallery/albun38>http://coloradok5.com/gallery/albun38</a>
     
  14. Greg72

    Greg72 "Might As Well..." Staff Member Super Moderator

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    YukonJack,

    Were you able to install your flip with the gas tank still installed? I'm still curious why I didn't need to pull mine...

    -Greg72

    '72 K5 Blazer - 427BB/TH350/NP205/6" Lift/35x12.50's
    <font color=blue>See it here: </font color=blue><a target="_blank" href=http://coloradok5.com/gallery/albun38>http://coloradok5.com/gallery/albun38</a>
     
  15. Mine's a K20 with the tank in the cab so that wasn't an issue for me luckily.

    1969 C20 4x4
    4" lift, 35x12.50x16 Super Swamper SSR's
     
  16. ImpalaSS

    ImpalaSS 1/2 ton status

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    oooooh yea it has a big block forgot about that.,.... thanks96C4and91K5 do you think its fine running the zero rates all around? i was a tiny bit skeptical about doing that



    68 SWB 4x4 1 of 1,449 made 327, 465 4 speed, rockwell tcase, dana44, 14 FF, <a target="_blank" href=http://communities.msn.com/68K10>http://communities.msn.com/68K10</a>
     
  17. 2Dogs

    2Dogs 1/2 ton status Premium Member

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    Since they bolt to the pack it is better than blocks. But it does raise the entire pack which is not ideal. Still better than the higher arch springs IMHO.

    Have you looked at this?
    http://coloradok5.com/tech.shtml#Spring Rate Table

    Go with the least number of leaves that you can.


    I REALLY like my combo so far - Pro Comp 4" and ORD Flip in 4". Will be doing the zero-rates and body within a few weeks. I'll let you know but Stephen said it is a very common setup with great functionality and support.

    Dave

    Horn Broken... Watch For Finger.
    <a target="_blank" href=http://coloradok5.com/gallery/Daves-Pics>http://coloradok5.com/gallery/Daves-Pics</a>
     
  18. Greg72

    Greg72 "Might As Well..." Staff Member Super Moderator

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    Dave,

    Be careful on that spring theory....less leaves do not make a spring softer! That chart is a little misleading in that respect... For a given spring pack thickness (the overall pack thickness) the move individual leaves you have....the SOFTER it will be.

    If you look at some of the custom stuff from National Spring.....their rear spring pack for K5's is something like 12 to 14 very thin leaves!!!!

    There is a mathematical formula for calculating spring rates, and if you play with the numbers you'll see why the individual leaf thickness is really a major factor in determining the spring's stiffness or softness. Most other parameters (like overall length, and width of leaves) are NOT things we have the opportunity to change.....so the number of leaves and their thicknesses are the parameters that all the spring suppliers seem to mess with....[​IMG]



    -Greg72

    '72 K5 Blazer - 427BB/TH350/NP205/6" Lift/35x12.50's
    <font color=blue>See it here: </font color=blue><a target="_blank" href=http://coloradok5.com/gallery/albun38>http://coloradok5.com/gallery/albun38</a>
     
  19. 2Dogs

    2Dogs 1/2 ton status Premium Member

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    Yes you are correct. But most commercially available springs should be close to the same height, correct?
    (the vette has transverse mount fiberglass springs - real thin!)

    I guess we should collect some data and add to the chart a column for pack height - I'll supply the listed Pro Comps!

    And I think on our light trucks we can't go too wrong with spring pack heights what is the max anyone has?

    My goal was to keep a flat spring with a medium rate and with a reasonable pack-height. Since I will be using the zero-rates I will be adding pack height but they say not enough to worry about.

    Dave

    Horn Broken... Watch For Finger.
    <a target="_blank" href=http://coloradok5.com/gallery/Daves-Pics>http://coloradok5.com/gallery/Daves-Pics</a>
     
  20. Greg72

    Greg72 "Might As Well..." Staff Member Super Moderator

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    Dave,

    If the spring packs are all the same thickness....then that will definitely make you want a higher leaf count!

    Here's an example that pretty close to reality (for my K5 at least!)

    My front springs are 44.50" eye-to-eye and they are 2.5" wide....there are 3 leaves in the pack, and the packs overall thickness is 1 3/8".

    Effective spring rate = 683 Lbs-inch! OUCH...no wonder my springs feel stiff! [​IMG]

    !!! BUT !!!

    If you took all of those same parameters (length, width, pack height) and added more (thinner) leaves.....here's what you'd get:

    3 Leaves = 683 Lbs-in
    4 Leaves = 384 Lbs-in
    5 Leaves = 246 Lbs-in
    6 Leaves = 171 Lbs-in
    .
    .etc

    The calculated rates get lower and lower as you increase the leaves, but in reality those leaves are getting SO thin at some point that I doubt they'd be very durable. Those numbers DO illustrate the point however.

    My only suspicion about that CK5 Spring Rate table is that, in fact, the pack height DOES change from manufacturer to manufacturer.....unless maybe they're messing with slightly WIDER spring packs? Hmmmm

    Anyway....I have a whole Excel spreadsheet that I could send you if you want to save yourself the trouble of calculating spring rates one-at-a-time. It's really neat stuff.....if you're a GEEK like me, I suppose [​IMG]



    -Greg72

    '72 K5 Blazer - 427BB/TH350/NP205/6" Lift/35x12.50's
    <font color=blue>See it here: </font color=blue><a target="_blank" href=http://coloradok5.com/gallery/albun38>http://coloradok5.com/gallery/albun38</a>
     

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