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Compared 57" Ford springs to 56" GM springs

Discussion in 'The Garage' started by wayne, Jul 13, 2002.

  1. wayne

    wayne 3/4 ton status

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    Compared 57\" Ford springs to 56\" GM springs

    And I will say this the F150's have 4" more droop then the 56". They are a lot lighter too. Damn I can't wait to see how they ride and flex. /forums/images/icons/cool.gif
     
  2. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    Re: Compared 57\" Ford springs to 56\" GM springs

    You mean more free arch?

    The guy I talked to at the spring shop yesterday said he gets quite a few people in with F-150's for add-a-leafs so they can carry a camper. He was saying that they are extremely soft springs.../forums/images/icons/cool.gif

    Rene
     
  3. Chris Demartini

    Chris Demartini 1/2 ton status

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    Re: Compared 57\" Ford springs to 56\" GM springs

    <font color="blue">Whats the spring rate on these things?
     
  4. yunit

    yunit 1/2 ton status

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    Re: Compared 57\" Ford springs to 56\" GM springs

    So! If I put the F-150 springs in my truck with the ORD shackle flip moved back, then install the ORD zero rate offsets to move the axle back 1.5", how much lift will I get out of this setup? Has anyone done what I am asking before? Also, what mix matching of springs did you do?
     
  5. wayne

    wayne 3/4 ton status

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    Re: Compared 57\" Ford springs to 56\" GM springs

    You can set it up to get the same 5" of lift that you would normally have with the stock flip/zero rate combo. Not sure on where to mount the brackets to do it yet since I have not put mine in yet. I am going to use 6" long shackels and angle them back to get even more droop out of it.
    BTW I sent you an e mail in the NJK5 board about your trans/t case stuff.
     
  6. wayne

    wayne 3/4 ton status

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    Re: Compared 57\" Ford springs to 56\" GM springs

    Yep Rene. I took one of the 57" ones and used a 56" main leaf so the rest of the pack on the 56" was apart and matching the eyes as close as possible the Ford spring hung down at least 4" lower then where the bottom of the 56" pack would be. Those Ford springs are super soft. /forums/images/icons/cool.gif
     
  7. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    Re: Compared 57\" Ford springs to 56\" GM springs

    Michael had the spring rate figured at about 190 lbs per inch...it may be softer than that. My set has about 10" of free arch and I know they flatten out to about the same loaded arch as the 52's do. I'm taking lot's of pic's as I go...so stay tuned/forums/images/icons/smile.gif

    Rene
     

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