Ford Performance GT350 Lowering Springs Group Buy

Discussion in 'Shelby GT350 Mustang' started by 50 Deep, Feb 16, 2017.

  1. VOODOO 6G

    VOODOO 6G Well-Known Member

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    Mine is still stock and sits at 27 5/8 front and 28 rear right now. Not sure how long your springs have been installed. They usually settle a bit.
     
  2. raiderjatt02

    raiderjatt02 Well-Known Member

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    Okay...so I just got back from a weekend at Sonoma Raceway and I'm thinking about selling my FP lowering springs. I haven't even installed them yet but I'm running R-Spec 6GR wheels on OEM R Sport Cup 2s and my stock, track pack front splitter was scraping at turn 3 and on heavy braking at turn 11. I don't think I want my car any lower than it is right now for the tracks. If it was street only, then the FP lowering springs will look better, but I think I might sell my set and order some R springs instead. I didn't think it would scrape at Sonoma but it happened multiple times under heavy braking/turning over the course of the weekend and I don't even have an R splitter.
     
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  3. icormba

    icormba Well-Known Member

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    I starting thinking the same thing after I looked at the picture Don took of you in Turn 6!

    picture.jpg

     
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  4. firestarter2

    firestarter2 Well-Known Member

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    Wow thats interesting. If that is your home track you probably shouldnt install the FP. Mine doesnt on my local tracks (Or I dont notice)
     
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  5. Epiphany

    Epiphany Well-Known Member

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    That is a monumental data point Jessie. Thanks.
     
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  6. raiderjatt02

    raiderjatt02 Well-Known Member

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    Yeah, I'm trying to sort through my GoPro videos from the weekend and I had one mounted to the front bumper so hopefully I caught the scrapes on one of them but my computer sucks so it probably won't be until later this week :D
     
  7. icormba

    icormba Well-Known Member

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    Yup and our other home track, Laguna Seca, would be even worse.
     
  8. superman07

    superman07 Well-Known Member

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    Dumb question. How much of it was cornering? For regular 350 guys, would an R sway, or even 35mm adjustable help at all keeping the front up by leveling it out?
     
  9. raiderjatt02

    raiderjatt02 Well-Known Member

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    Turn 3 was a combination of hard brakes and a fairly steep uphill left hand turn. The one that really surprised me was the scraping just before turn 11 since it's hard on the brakes at over 100MPH and no turn. It's a pretty flat section with a slight dip. And it didn't happen every single lap. Only when I was driving pretty damn close to my limit and I'm no professional so someone with much more skill/experience than me could probably get it to scrape pretty consistently. I heard it on both turns probably a total of 6 or 7 times over a 2 day session. That was enough to make me realize I don't want it any lower than it is already.
     
  10. icormba

    icormba Well-Known Member

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    Guys, Jessie is very modest!! His previous instructor called him "a natural". This was only his second time on track at Sonoma Raceway, which some call the most technical track in the country, and he excelled. He may not have been the fastest out there this weekend, but he can hold his own.

    Track record, street cars: (according to the interwebs)
    1. ACR 1:40
    2. GT3 1:46

    Jessie did it in 1:57!!! I find that very impressive! Heck, I was joking with him that he beat my Xbox time in the GT350R!!! ;)

    By the way... I think my best this weekend at the Shelby Mini-Nats was 3:40. Yeah, I suck!! :doh: ;)

    HOWEVER...
    I am wondering if the extra stiffness of these new springs will help the front end from dipping and scrapping???? Does anyone have thoughts on this???
     
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  11. Epiphany

    Epiphany Well-Known Member

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    Icormba....that's a great question. I believe the R springs do indeed have the potential to reduce scraping. Terry at Vorshlag plotted a curve for both stock and R springs, IIRC. Somebody here has no doubt posted it. It shows how the R springs firm up quicker than the non-R units.
     
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  12. Zombo

    Zombo befejezett

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    From the Supplement, the R springs are ~24% stiffer up front, and both appear to be linear in design. Thus, I would expect ~24% less displacement (compression) when exposed to the same weight increase over the front axle, due to weight transfer. Am I missing something? Not sure if the R springs change the static ride height though (probably not as the R already potentially sits lower due to the smaller tire diameter). springrate.JPG
     
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  13. AMpowerJ

    AMpowerJ Well-Known Member

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    I have an extra set of these springs sitting in the box unopened. I'll match the GB price of $225+shipping. Just PM me if you want them.
     
  14. EF300

    EF300 Well-Known Member

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    I am having my springs put on in 2 days by a local speed shop. What alignment specs are you guys using after the drop ? I am just going to be street at this point no track. Just keep it to the OEM street alignment ?

    Not installing Caster camber plated at this point. Having 3 daughters does not leave much time (or money) for the track.

    If anything I would bias an alignment more towards handling rather than tire wear.

    Any guidance appreciated.
     
  15. Tomster

    Tomster Beware of idiots

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