Register now to get rid of these ads!

Technical running leaf springs on a 1955 Buick

Discussion in 'The Hokey Ass Message Board' started by tcarrasco84, Jul 7, 2015.

  1. tcarrasco84
    Joined: Sep 10, 2012
    Posts: 33

    tcarrasco84
    Member
    from California

    Its another 1955 Buick rear suspension thread, i did alot of searching on here and across the web and came up empty handed. I know all about the trailing arm method of switching over to a open driveline in a 55' but has anyone ran leaf springs off a 55 bel air or comparable car. The higheth of the frame on the back half after the wheel wells are taller than the rest of the frame ,would this matter. Any input would be helpful. Thanks Hamb
     
  2. missysdad1
    Joined: Dec 9, 2008
    Posts: 2,987

    missysdad1
    ALLIANCE MEMBER

    Here's a couple photos of a '54 or '55 Olds with leaf springs. The X-member frame is similar to the Buick, so it just might work, axle and all. Food for thought... fair-cars%20207.jpg fair-cars%20211.jpg
     
    tcarrasco84 likes this.
  3. 325w
    Joined: Feb 18, 2008
    Posts: 5,508

    325w
    ALLIANCE MEMBER

    Chevy ain't heavy enough.
     
  4. tcarrasco84
    Joined: Sep 10, 2012
    Posts: 33

    tcarrasco84
    Member
    from California

    what do you suggest? shes getting a 9 inch out of a edsel and i was looking at chevy leafs. thanks for the pics
     

  5. Rusty O'Toole
    Joined: Sep 17, 2006
    Posts: 9,480

    Rusty O'Toole
    Member

    Why would you do this?
     
  6. Hnstray
    Joined: Aug 23, 2009
    Posts: 11,900

    Hnstray
    ALLIANCE MEMBER
    from Quincy, IL

    I think there is a significant difference between the Olds and Buick in the shape/contour of the frame rails in the "kick up" for the rear axle. If I am correct about that, it creates a problem with attaching the springs at the forward end under the rail. The spring runs 'uphill' to the rear.....incorrect geometry for the spring.

    I have seen that dealt with by fabricating mounts for the front spring bracket inboard of the frame rail. While that will work, it places the springs several inches closer to the centerline of the vehicle and reduces the springs resistance to body roll.

    There is a reason older Buicks are more often modified with either 4 bar or the truck arm suspension and retain coil springs or coil overs.

    Ray
     
  7. d2_willys
    Joined: Sep 8, 2007
    Posts: 4,148

    d2_willys
    Member
    from Kansas

    Someone out there should come up with a Buick "trailing arm conversion kit"! Make life a lot easier than 4 link or leafs.
     
  8. BJR
    Joined: Mar 11, 2005
    Posts: 6,804

    BJR
    Member

    Behind the axle the Buick frame is very wimpy, it would need to be boxed or re enforced for leaf springs.
     
  9. Zandoz
    Joined: Jan 23, 2012
    Posts: 307

    Zandoz
    Member

    The offroad sites typically have a large number of leaf spring mounting brackets that may help.
     
  10. 73RR
    Joined: Jan 29, 2007
    Posts: 6,545

    73RR
    Member

    You might need to make a full sized sketch of the back half of the frame (side view) so that you can play around with the front spring mount location. For the sketch just cut out chunks of cardboard that fit along the bottom of the rail and transfer to something like the garage floor or a large piece of cardboard.
    This also provides a place to show where the axle center is so you can figure out the length of the front-half of the main leaf.
    Post some photos of what you have.


    .
     
  11. Mr48chev
    Joined: Dec 28, 2007
    Posts: 28,571

    Mr48chev
    ALLIANCE MEMBER

    BJR jarred my memory from owning a 55 and remembering back there isn't much in the way of frame behind the axle as far as strength to handle leaf springs.
     
  12. tcarrasco84
    Joined: Sep 10, 2012
    Posts: 33

    tcarrasco84
    Member
    from California

    Update: bought a set of trailing arms off a 72 c10 and the crossmember problem solved! thanks as always guys
     
  13. finn
    Joined: Jan 25, 2006
    Posts: 764

    finn
    Member

  14. d2_willys
    Joined: Sep 8, 2007
    Posts: 4,148

    d2_willys
    Member
    from Kansas

    Very wise decision! I will do that too with the 53 Special, since it will have SP400 transmission in it, with the Straight 8.
     
  15. Truckedup
    Joined: Jul 25, 2006
    Posts: 3,989

    Truckedup
    Member

    Just look under a modern PU or leaf spring SUV. The rear spring eye is always about 4-6 inches higher. It gives more controllable handing at the limit than both eyes the same height
     
  16. d2_willys
    Joined: Sep 8, 2007
    Posts: 4,148

    d2_willys
    Member
    from Kansas

    What rear end are you using with the trailing arms? I would think the C10 rear end would be the obvious, since the u-bolts will fit right up. Perhaps the panhard bar too.
     
  17. Hnstray
    Joined: Aug 23, 2009
    Posts: 11,900

    Hnstray
    ALLIANCE MEMBER
    from Quincy, IL

    This is an interesting comment. I am not disputing what you say, but want to know how that geometry works in that manner. Can you refer me to a suspension article or book wherein I can pursue that subject? Thanks.

    Ray
     
  18. tcarrasco84
    Joined: Sep 10, 2012
    Posts: 33

    tcarrasco84
    Member
    from California

    As for rearend i picked up a 9 inch that came out of a Edsel once upon a time. Its a big bearing 9 inch that came factory with 5x5 bolt pattern as did the big turnpike cruisers did too. Haveing some problems finding hardlines for it and e brake cable at the moment.
     
  19. Hot rods to hell torque tube eliminator.

    [​IMG]


    Sent from my iPhone using Tapatalk
     
    Hnstray and Chavezk21 like this.
  20. desotot
    Joined: Jan 29, 2008
    Posts: 1,832

    desotot
    Member

    Looks good ^^^^^, I made a similar setup for a 40 olds coupe.
     

Share This Page

Register now to get rid of these ads!

Archive

Copyright © 1995-2021 The Jalopy Journal: Steal our stuff, we'll kick your teeth in. Terms of Service. Privacy Policy.

Atomic Industry
Forum software by XenForo™ ©2010-2014 XenForo Ltd.