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Technical I give up... what are these for?

Discussion in 'The Hokey Ass Message Board' started by AGELE55, Jun 8, 2020.

  1. Maybe the idea was that as the suspension goes up the rear spring hanger goes back and up so if you push the spring hanger up it may lift the wheel faster that the rate of lifting the body??
    Or the bumper bracket is just too weak to lift the car with and Pontiac owners don't want to get under the car to place the jack. The funny thing is, my '37 Cadillac does not have them so the Cadillac owner has to get under the car. Or the Cadillac owner's driver has to get under the car. I think Cadillac just did not want to have these funny looking brackets hanging under the rear of the car.

    Oh I found the info on a site "" the have a lot of info there.
    Six Ball and lothiandon1940 like this.
  2. 56sedandelivery
    Joined: Nov 21, 2006
    Posts: 6,695

    Member Emeritus

    Jack em up, jack em up, buddy gonna shut you down! No wait.....that was tach em up. Never mind. I am Butch/56sedandelivery.
  3. Warpspeed
    Joined: Nov 4, 2008
    Posts: 532


    They are there for aesthetics.
    6inarow and blowby like this.
  4. Silly me, I thought they were redneck wheelie bars.
    HuskerNation and 6inarow like this.
  5. On really long springs,
    Without them unless you jack under the axle, can you imagine how high you would need to go to get the wheel off the ground if you jacked off the body?
    Be abit like the bloke in the pic above.
    lippy likes this.
  6. blowby
    Joined: Dec 27, 2012
    Posts: 8,273

    from Nicasio Ca

    Storage hooks
  7. gene-koning
    Joined: Oct 28, 2016
    Posts: 2,818


    Interesting concept, when you put the jack under the bracket, it would lift the car faster, and it would also lower the wheel from the body work to make it easier to get the tire out of the wheel opening.
    I've had a few cars through the years where adding extra clearance between the tire and the fender would have been helpful. Gene
    Six Ball likes this.
  8. Six Ball
    Joined: Oct 8, 2007
    Posts: 4,560

    Six Ball
    from Nevada

    Also picking up some leverage helping the jack out and not nearly as dangerous as the bumper jacks to come.

    If they'd been on Oldsmobiles Christmas Story would have been a different movie.
    Last edited: Jun 10, 2020
  9. 52HardTop
    Joined: Jun 21, 2007
    Posts: 980


    I don't know if it actually lowers the axle or wheel. To me it looks as though the spring is made flatter, when the rear shackle pivots up, and that keeps the wheel and axle from dropping. That helps to lift the rear axle more and not so much the whole car?
  10. They're silly, cut them off.
  11. 52HardTop
    Joined: Jun 21, 2007
    Posts: 980


    Oh, poooooo....
  12. The37Kid likes this.
  13. Hot Rods Ta Hell
    Joined: Apr 20, 2008
    Posts: 4,430

    Hot Rods Ta Hell

    I agree that the shackle being pulled rearward when the jack raises would seem to flatten/tension the rear spring. This would emulate placing a jack under the axle U bolts. It would raise the tire in the wheelwell allowing you to clear the tire free from the ground faster than a frame jack position where you have to wait for the leaf spring sag to clear the tire from the ground.

    I love ingenious stuff like this!

    • I'd guess it may be patented or we'd have seen the aftermarket offer it for other cars? Anyone good at patent searches?
    • I'd love to see the O/P jack up the car via two methods; a traditional frame mount jack and then the Pontiac shackle mount jack and show us two side pics and the difference (measured from bottom of frame to ground) to clear the tire tread from the ground on each method.
    52HardTop and lothiandon1940 like this.
  14. rc57
    Joined: Feb 7, 2007
    Posts: 618


    Alright, who backed the clear car into something? Can't blame the "blind spot".
  15. 19Fordy
    Joined: May 17, 2003
    Posts: 7,513


    Were they only on GM vehicles?
  16. gary macdonald
    Joined: Jan 18, 2021
    Posts: 207

    gary macdonald

    I admit I havent read the entire post BUT the extensions on the rear shackle are to prevent the shackle from rolling over . Meaning it could under some conditions, have the spring above the shackle mount ( its not on the frame ,its outside of it and could flip or rollover and make it lean . At least thats what I was told .
  17. 37gas
    Joined: May 25, 2013
    Posts: 104


    that's not a clear car it's painted with base coat clear coat
    seb fontana and AGELE55 like this.
  18. 19Fordy
    Joined: May 17, 2003
    Posts: 7,513


    Tie downs used on car transporter?
  19. Ebbsspeed
    Joined: Nov 11, 2005
    Posts: 5,770


    The mystery was solved a long time ago.

    And the springs are directly under the frame rails, with one shackle on each side. Look at the "clear car" in post #74.
    gary macdonald and Budget36 like this.
  20. gary macdonald
    Joined: Jan 18, 2021
    Posts: 207

    gary macdonald

    Thank you . Im sure one of the spring mounts are on the outside of the frame , maybe the front but it doesn’t matter now .
  21. AGELE55
    Joined: Jan 4, 2018
    Posts: 426

    Member guys skipped a page. We solved this one on post #38.:rolleyes:
  22. 36 poncho
    Joined: Jul 7, 2009
    Posts: 88

    36 poncho
    from ny

    ......... Post #11

    <-------- '36
    AGELE55 likes this.
  23. Jack E/NJ
    Joined: Mar 5, 2011
    Posts: 704

    Jack E/NJ
    from NJ

    >>>We solved this one on post #38.>>>

    No we didn't. Everbody knows the front end of a rear wheel drive tries to go slower than the rear end. So the front end lifts up to try to go slower than the rear end. So a rear wheel drive needs antiwheelie wheels like mentioned earlier in this thread to prevent this. So here's a side by side comparison from a bulgarian car magazine of what really happens when antiwheelie wheels are used and when they are not used when they obviously should be.

    AGELE55 and Budget36 like this.
  24. AGELE55
    Joined: Jan 4, 2018
    Posts: 426


    Lol...somebody needs to tell squirrel. I think that’s his car.:eek:
    Last edited: Aug 19, 2021
  25. AGELE55
    Joined: Jan 4, 2018
    Posts: 426


    Sorry... but no vacation prize pack and barrel of cash without photographic evidence. ;)
  26. choptop40
    Joined: Dec 23, 2009
    Posts: 4,229


    stunt man grab handle.......i asked Jackie hes knows spring not lying....
    AGELE55 likes this.

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