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IRS vs SRA for the corner carver/street car...help me pick

Discussion in 'Mach 1' started by bwahl602, Aug 13, 2009.

Swap the SRA out for an IRS??? remember, just a fun street car

  1. DO IT!!! IRS ROCKS!!!

    30 vote(s)
    54.5%
  2. Build the SRA!!!

    25 vote(s)
    45.5%
  1. bwahl602

    bwahl602 New Member Established Member

    Messages:
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    Location:
    West Grove, Pa
    04 mach 1. Ive got an 04 cobra IRS swap available if i want it..

    First off. My mach is a street car and not much more... Its gonna see 1 or 2 autocross events a year and hopefully a little open tracking. The car might head to the drag strip once a yr and trust me, im no drag racer. Car takes long trips sometimes and the roads around here suck.
    Im looking for ride quality, performance, reliability.
    One thing to add, the mach will get an eaton swap sometime soon. 500rwhp is the goal
    IRS vs SRA
    Currently im running a SRA in my mach with steeda control arms, adj upper arms and steeda lowering springs all around... Personally i dont think the ride is that bad but i will admit, the sra is a bit harsh at times.. especially whe n the road surface gets a bit choppy...

    Im completely on the fence about the irs... i know it may handle a little better at first... But i have torque arm and panhard bar peices on my list to go on the mach. I have no idea how they will make the SRA ride once i get rid of the upper control arms.

    Anyone have experience with a built SRA and a built IRS???

    Either way: if i go IRS, at the minimum it will get urethane, if not some delrin bushings. All bushings will be replaced and it will get the brace and usual parts

    if i stay SRA, it will get a MM torque arm, PHB and MM coilovers


    Im worried about wheel hop with the irs. I dont want to not be able to slide the rear end making a turn every now and then.. and lighting the tire up from a take off is fun sometimes too...
    Am i going to loose the ability to do this? (remember the IRS will have all new bushigs/ brace etc)

    Ride quality, built SRA vs Built IRS? Anyone have experience here

    IRS worth the headaches of aligning it etc etc???


    Anyone who has an opinion is welcome to share it and i thank you for it.

    IRS the mach or no?

    EDIT: Another thing that came to mind was overheating with the IRS diff..

    most people say that the fully built 3 link SRA is superior to a modded IRS..
     
    Last edited: Aug 13, 2009
  2. FEARED

    FEARED New Member Established Member

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    NAS Lemoore, CA
    unless you plan on getting serious with auto cross, or open track, etc... stick to the solid axle.
     
  3. 97desertCobra

    97desertCobra Procharged! Established Member

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    Back in the USA!
    Watts link..........
     
  4. speedofsound

    speedofsound Centrifuged Established Member

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    See above.
     
  5. Driver500

    Driver500 Member Established Member

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    Feb 26, 2007
    Location:
    Baton Rouge
    your SRA with panhard and torque arm will be fine. If anything try it out since you already have it. If you don't like it switch then. I run road course, street, and drag and my SRA performs well across the board.
     
  6. Furinox

    Furinox New Member Established Member

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    Denton, Tx
    ...
     
    Last edited: Oct 19, 2009
  7. cobrasvtcoupe25

    cobrasvtcoupe25 Active Member Established Member

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    I went from IRS to SRA and couldn't be more happy. I like going fast straight though.
     
    Harman likes this.
  8. Gallows

    Gallows Make My Day... N/A Established Member

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    For a weekend DD and the odd trip to the track I would sooner have a IRS over the SLA but the roads here are terrible and that is being polite.
     
  9. blackbob

    blackbob Nurburgring GTO Established Member

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    My .02
     
    Last edited: Aug 14, 2009
  10. EVO-lution

    EVO-lution Active Member Established Member

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    IDK...I feel IRS would be better for circuit racing. SRA is stronger for straight line I feel. IDK i could be wrong. When I had IRS in my 99 Cobra it felt soooo much smoother around turns. The SRA in my Mach nbow feels sloppy at times when I'm hitting a big on/off ramp.
     
  11. ponygt65

    ponygt65 Multi-Quotin' Fool Established Member

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    Central CA
    I'm not into road racing, but what I can tell you, is I was able to push my AB mach around corners and easy/comfy as my 03 cobra. It had H and R SS's and 18"s (265s). It road very smooth IMO.

    And takign corners at high speeds has been skeptical for me ever since my roll over.
     
  12. blackbob

    blackbob Nurburgring GTO Established Member

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    I will agree my buddies Cobra does that from time to time. I chuck it up to it not being aligned ( the only shop with a 4 wheel alignment is broken and we're in Guam so yeah..).
     
  13. 1hot281

    1hot281 Active Member Established Member

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    IRS FTW... i'm looking to do the swap as well... not really into drag racing
     
  14. Nocturnal'14

    Nocturnal'14 '18 ROUSH RS2 #18-0103 Established Member

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    Jul 6, 2008
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    OH/KY/MO
    I did the IRS and LOVE it....
    of course I have no intentions on ever SCing it! (That's what my Saleenm is for!)
     
  15. RcodeStang

    RcodeStang New Member Established Member

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    Cherry Hill, NJ
    IRS would be nice but I don't want to have to change out all the friggin bushings. If you can afford fully built IRS /w diff cooler, do it. Otherwise, SRA.
     
  16. 97desertCobra

    97desertCobra Procharged! Established Member

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    Back in the USA!
    SRA with Griggs watts link. Will give you incredible corner carving ability and the strength and reliability of the SRA.
     
  17. Furinox

    Furinox New Member Established Member

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    I love how my IRS rides. Much better than my solid did.
     
  18. Four cam slam

    Four cam slam Bacon Enthusiast Established Member

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    Jul 29, 2009
    Location:
    Orangeville Ontario
    IRS all the way.....DO IT!!!!!!

    I swapped to IRS in my 97 Cobra.......AWSOME just change the bushings while its out!!!!!
    The exhaust routing on the IRS is SOOOOOOO sweet, looks exotic.:rockon:
     
  19. ON D BIT

    ON D BIT Finish First Established Member

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    Currently in Sonoma County
    second this! search griggs racing on youtube! they are on rails with their setup! the bonus is that they change the attachment points so you can drop your car without losing suspension travel!
     
  20. 04Mach1Blurr

    04Mach1Blurr 1st GT500 M122 Eaton Mach Established Member

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    Leesburg, VA
    Doing the swap either tomorrow or Sat!
     

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