GT350R Springs for GT (high rate, minimum lowering)

Discussion in 'Suspension, Brakes & Chassis' started by valentinoamoro, Oct 12, 2016.

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  1. 2015Etrac

    2015Etrac Well-Known Member

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    Nice, I need to make one of those. It will help with the rears too, they are tough to reach and since the adjustment knob was rusted a bit I need some additional leverage to move it.
     
  2. Norm Peterson

    Norm Peterson corner barstool sitter

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    Don't overlook the edit I made about only needing 90° rotation if you cut it like that.


    Norm
     
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  3. 2015Etrac

    2015Etrac Well-Known Member

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    Thanks. Got it. Also, you guys confirmed that one full turn on a Koni is 360 degrees and not 180?
     
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  4. BmacIL

    BmacIL Enginerd

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    Oh if only you could adjust the S550 rears from the trunk...
     
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  5. 2015Etrac

    2015Etrac Well-Known Member

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    I was thinking the same thing. So much easier and no rust on the adjustment knob.
     
  6. Jonyxz

    Jonyxz Well-Known Member

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    Need a little help:
    I'm planning to go exactly this route for minimal drop and mild spring increase: 194/800

    However, I am trying to find the current part# for the 194 lbs springs but it seems like they have been revised so not sure which is the right one. Can someone confirm this is the right one?
    FR3Z-5310-K
     
  7. Brian@BMVK

    [email protected] Well-Known Member

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    To be honest, I would not do that combination. It will have reverse rake. If you want to use OEM springs, get the GT350R springs, FR3Z-5310-M (240 lb/in, 0.7" drop).

    You'd probably be best off getting Steeda's min drop fronts (200 lb/in, 0.5" drop) and the SP088 rear (800 lb/in, 0.5" drop).
     
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  8. Jonyxz

    Jonyxz Well-Known Member

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    Hi Brian, I was planning on using 1/8 spacers on the rear to negate the reverse rake.
    The steeda fronts are nice but from what I know they only sell them as set of 4
     
  9. Brian@BMVK

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    When I have asked in the past, they would sell them separately as pairs if you call them. Either of those options would work.
     
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  10. SteedaTech

    SteedaTech Well-Known Member
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    Brian,
    You are correct, we will sell them separately.

    Thank you,

    Steeda Tech
     
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  11. Jonyxz

    Jonyxz Well-Known Member

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    Do you guys think the base gt350 front spring (194 lbs) would match well with rear pp springs(728 lbs) for street use only?

    According to Bmacil's excel sheet it shoud have a similar 1.01 ride frequency f/r ratio as the gt350r
     
  12. Brian@BMVK

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    Not bad, but I'd still look at my suggestion above to get 200/800, especially for a street car.
     
  13. Jonyxz

    Jonyxz Well-Known Member

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    You also suggested to use the gt350r fronts with the sp088 rear (240/800) which is an even lower f/r ratio: 0.96.
    If that works well then gt350 front and pp rear(194/728) should drive similar just a little less stiff, right?
     
  14. Brian@BMVK

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    The only reason for that suggestion was to avoid reverse rake. 200/800 is an ideal street setup.
     
  15. Jonyxz

    Jonyxz Well-Known Member

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    I'm reluctant to stiffer springs as streets are pretty bad here. My inicial plan was to only change struts and shocks (frpp track) with base springs. However, I'd like to improve agility of the heavy front end so I think a little stiffer might help. For the rear I want I dont need it as much, just want it to follow the front correctly and be as comfortable as possible.
    I used to really like driving 2 wheels with stiffer front end than rear but I dont know how this car will drive with that setup
     
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