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Widened OEM PP Wheels and NT05R test

Discussion in '2013-14 Shelby GT500' started by Planeswalker, Feb 3, 2013.

  1. TORQJNKY

    TORQJNKY Authorized Vendor Authorized Vendor

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    I'll strap my GoPro to the rear of the car next weekend and take you for a ride :rockon:
     
  2. Dave G

    Dave G New Member Established Member

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    Once they get well worn be careful in the rain! I've been sideways on the interstate at 60mph with NT05Rs...they hydroplane in a heartbeat.
     
  3. Dave G

    Dave G New Member Established Member

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    If they did that then every one would have gear whine/rear end issues. The 8.8 is a weak link.
     
  4. Carbd86GT

    Carbd86GT You're Gator Bait Established Member

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    Our 2 Shelby's making 4 digit power beg to differ :poke: These cars could definitely use more wheel and tire from the factory, the rear is fine. The 8.8 is quite proven.

    OP, car looks great, but the only real way to test a tire is to take it to the track. A 60 roll isn't a real good test for a drag radial, especially for a bolt on car. Thanks for posting your results though.
     
  5. Dave G

    Dave G New Member Established Member

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    So you have two cars with 4 digit power on a stock 8.8 with a traction lok diff and no problems? What is the secret? I am obviously doing something wrong.
     
  6. Carbd86GT

    Carbd86GT You're Gator Bait Established Member

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    The 2013 is still using the stock diff, the 2010 is using a spool. The "8.8" is not the problem, but the stock traction-loc differential itself is not going to hold 1000+ rwhp for a very long time without numerous rebuilds. All you would need is a new diff or a spool, depending on the use of the car.
     
  7. Dave G

    Dave G New Member Established Member

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    I know a modified 8.8 will hold up. I made my other comment about the stock 8.8 not holding up. I'm not happy about having to modify the rear in a new car.
     
  8. rwboring

    rwboring Member Established Member

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    just a guess but i bet if the tranny or bottom end was the weak point you would still be complaining about having to modify them in a "new car" once stickier tires on it... there has to be a weak link
     
  9. Dave G

    Dave G New Member Established Member

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    It's on stock tires and never been to the track yet...soooo...your point is?
     
  10. rwboring

    rwboring Member Established Member

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    the point is, although you have had problems with the differential in an 8.8 I don't think there is a problem with the 2013 GT500. In all actuality they are different units. Even the upgrade from ford with carbon disks "excludes 2013 GT500".

    People have had bent axles, broken clutches, etc which are all drivetrain related. There have been some cars that have been to the track multiple times and have a decent amount of mileage on them with zero issues (including mine). Until we start seeing these fail in multiple cars maybe you should resist claiming they are an issue (2013 vs I think you stated a 2006, maybe it has been solved).
     
    Last edited: Feb 5, 2013
  11. Dave G

    Dave G New Member Established Member

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    My 06 had the 8.8 upgraded with gt500 rear end parts at the time (2 1/2 years ago the second time the traction-lok went out)...the third time it went out I ended up putting a detroit locker in it and it was pretty bullet proof after that (also went from 4.10 to 3.73 that time). Do you have a torsen or traction lok? I still have a beef with the traction lok design. It can't handle the abuse this car can dish out. Just my opinion. I've only had 4 mustangs so I'm not that informed. I only ever ran a nitto nt05r or nt555r...never slicks. Less than 3k rpm launches. 60ft times 1.7X-1.8x with an occasional 1.6x when track was well prepped. The shock load from burn-outs and wheel hop are what kill the traction-lok
     
    Last edited: Feb 5, 2013
  12. Dave G

    Dave G New Member Established Member

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    I agree that with slicks and 5,000rpm launches...it should be on you to upgrade the drivetrain. But on the street with stock tires there should be no issues! If you give me ten new shelbys with the traction lok after they are properly broken in. I can drive them for one day on the street and give you gear whine and excess backlash.
     
    Last edited: Feb 5, 2013
  13. rwboring

    rwboring Member Established Member

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    I have the torsen.

    Didn't Ford have the standard clutch pack in the GT500's till the 2011 model year? Which did you rebuild with?

    And we all know that anything can fail but they haven't YET, you are throwing up all these flags (every time the rear is mentioned) and I could very well eat my words the next time I step into my car but as of right now the batting average is showing that under stock power (and stock tires) they aren't going out left and right.


    Anyone can tear a car up but not everyone can keep them together... trust me I've went through 3 turbo motors.
     
    Last edited: Feb 5, 2013
  14. Dave G

    Dave G New Member Established Member

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    I had a torsen in my Boss and I beat the hell out of it...no issues. But that's only 380ft lbs of torque. I am certain the torsen can take more abuse. I'm pissed that the traction lok was the standard diff for this car. I hate the fact that I will have to get it repaired before I have 1,000 miles of normal abuse. I didn't buy it to let it sit in the garage...it gets driven hard.
     
  15. Dave G

    Dave G New Member Established Member

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    5 years from now when I buy the latest cobra with an irs I don't want to have to worry about the rear going out. It needs designed for abuse and durability. If it raises the unit cost so be it. At least offer a drag racer package that can handle lots of burnouts and hard launches. 5,000 pass durability standard on a drag radial (no slicks)...including a clutch dump burn-out without a line lock. Ford doesn't compromise on engine durability...the rest of the drivetrain should follow the same standard.
     
    Last edited: Feb 5, 2013
  16. rwboring

    rwboring Member Established Member

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    Dude there are many people here with more then 1,000 miles and track time on their non PP cars and they haven't had a problem... maybe it is the term "normal abuse"...
     
  17. 19COBRA93

    19COBRA93 Tire shredder Established Member

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    All GT500's from 07-12 got the carbon fiber clutch packs. So did the '08 bullitt.

    These 8.8's are very strong, and the only weak link really is the Ford track-loc.

    Give me 10 brand new Shelbys off the show room floor and I'll show you gear whine and incorrect backlash. It's not the 8.8 that's giving up, it's the assembly job from day 1.

    Install a proper diff, set it up correctly, and the rest of the stock parts will take you to 10.00 or quicker without a problem.
     
    Last edited: Feb 5, 2013
  18. Farmer-Ted

    Farmer-Ted I pooped a little. Established Member

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    So with all this advance knowledge of how "bad" the trac-lock is, why did you not get the PP with the Torson diff? From you past experience it seems you know what you were getting into.
     
  19. Planeswalker

    Planeswalker New Member Established Member

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    Track here is shut down for some renovations, hoping to take it in about a month. On stock tires the car would have been sideways on that same run in those temps. I originally took it out to get some kill vids (since I was in Mexico :coolman:) but they were all such blow outs they wasn't even worth bragging about. Even had one guy stop me and ask if it was a Super Snake, I said "nah, its just a regular GT500" lol.
     
  20. Dave G

    Dave G New Member Established Member

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    I don't think the svt package is worth the money unless you do road course racing. The car I bought I didn't order either...I was lucky enough to find what I wanted on a showroom floor within an hour drive of my house. I think down the road drag racers are going to have issues with the torsen also. I wish a 9" rear was an option...I would have paid for that, or even just the torsen upgrade. Traction lok is garbage for a high power car that will see drag strip use.
     
    Last edited: Feb 5, 2013

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