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Thread: A question on springs

  1. #1
    Join Date
    Jan 2003
    Location
    St. Augustine, FL
    Posts
    398

    Question A question on springs

    What are you using for rear spring rates? Koni recommended 250# springs for the back, which do give a good ride and allow enough movement to help traction out some. They do also allow the car to give the shock snubbers a good workout, so I'm thinking that 350#'ers might be a good jump.

    Whattya got on yours?
    Yeehah

  2. #2
    Join Date
    Jan 2003
    Location
    Shepherdsville, KY, USA.
    Posts
    1,725

    Big Block Car, 2,600#

    Presently 350# Hypercoils, with Billstein Shocks charged with 125# of nitrogen. The 400# springs would not be out of the picture.
    Rick
    427 S/C , 427 Side-oiler, 4 Speed Close Ratio Top Loader, 3:73 Gear
    #4279405

  3. #3
    Join Date
    Dec 2004
    Location
    Prince Frederick, Maryland, USA.
    Posts
    1,561

    Paging Alan Weaver

    Good Question.
    I am running QA1 650# 9inch springs up front.
    I haven't touch the rears as they seam to be fine. They are what came from Unique with the adjustable shocks.

    Alan, What is the spring rate on the rear of the adjustable set ups?
    Tony
    Unique 427 #4279480 Precision Engine Machine Company 427 s/o 483.47 stroker close ratio toploader 3.31 jag rear

  4. #4
    Join Date
    Feb 2004
    Location
    Baton Rouge, LA, USA.
    Posts
    100
    550lb up front, 400lb in the rear. A bit stiffer ride, but not at all unreasonable and handles mucho bettero.
    Robert
    Unique Motorcars 289 F.I.A. # 9142
    Southern Automotive 354 stroker

  5. #5
    Join Date
    Jan 2003
    Location
    St. Augustine, FL
    Posts
    398

    Smile

    Mmm....this is good. Looks like the 400#er's are the better choice; I was a hair uncertain that they might turn the backend into a buckboard. I did go to 450# on the fronts, and good to know that more can be had without popping eyeballs outta sockets.

    Thank you, mens. This is what I needed.
    Yeehah

  6. #6
    Join Date
    Mar 2006
    Posts
    75
    I have the standard shocks-- and I get a little wheel rub on the right fender of my FIA- especially with larger passengers. If I replace my springs with 400 # I would think I might solve my problem and I might not need new adjustable coil-overs?

  7. #7
    Join Date
    Feb 2003
    Location
    Birmingham, AL, USA.
    Posts
    487
    I've got 300 lbs 11" on front and they really give a smooth ride on city streets. I had 330 lbs 10" and my fillings kept falling out.
    Bob

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