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3.31 vs 3.73 Anyone see faster 1/4 mile times?

Discussion in 'Driveline/Suspension' started by az20115.0, May 23, 2014.

  1. az20115.0

    az20115.0 Member Established Member

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    I have 3.31 on my 2011 GT with some bolt ons including JPC long tubes, and a few other small things.. I love the 3.31 gear it has for regular street driving but contemplating getting the 3.73s.. So if anyone switched over to the 3.73s, have you seen improved track times?
    Thank you
     
    Last edited: May 23, 2014
  2. Torchy

    Torchy Active Member Established Member

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    M6, 28inch tire with 3.73 requires 5th gear in 1/4mile. Don't do it.
     
  3. el jefe 302

    el jefe 302 Making all kinds of gainz Established Member

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    Need more info.. How much are you willing to rev?

    28 inch tall tire with 3.73's in 4th gear

    110 @ 6500

    118 @ 7000

    127 @ 7500

    135 @ 8000

    If you don't run a boss or CJ intake stick with the 3.31's IMO
     
    Last edited: May 23, 2014
  4. Torchy

    Torchy Active Member Established Member

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    Real results are whats real. My car:

    4th gear
    28.4inch tire
    121mph @ 7500rpm

    Track and datalogged proven
     
  5. Voltwings

    Voltwings Well-Known Member Established Member

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    3rd gear goes to 112 at 7800 rpms with 3.31's, but with the CJ they're somewhat of a dog at the track. Awesome on the street, not so much at the track...
     
  6. oldbones

    oldbones The blue bowtie Established Member

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    In a da of 5014ft with 3.31, Boss intake, x-pipe, axle back,tune and cai I ran a 12.84 at 113. I'm very happy with the 3.31 gear set.
     
    Last edited: May 24, 2014
  7. FivePointOmg

    FivePointOmg BOSS 302 #1853 Established Member

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    Had 3.31's in my '11 GT...Have 3.73 in my '14 GT and I love how it feels more lively...Moves out much quicker and more eager to go...Hard to explain...You just have to drive a 3.73 car and you'll see...Plus as mentioned above you can run supporting mods that raise your shift point so you can easily stay in 4th for the 1/4...
     
  8. Holovacko

    Holovacko Member Established Member

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    3.73 feels much better than 3.31 on the street, but at the track you'll need a good tuner, to tune for it. Otherwise it falls flat shifting into 4th (Auto) at about 1,000ft. If tuned correctly, it will keep pulling though.. Don't have any pre-3.73 times, but I was mid 11's with them... I've since switched to a different gear. If your M6 I hear 3.90 is the way to go
     
  9. az20115.0

    az20115.0 Member Established Member

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    I'm planning to do cams and CJ intake.. wanna bump redline to 7900 so then I will definitely need 3.73 ...
     
  10. az20115.0

    az20115.0 Member Established Member

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    Ok thanks everyone.. I had a great memorial weekend at the track (Inde Motorsport Ranch) although my sissy factory brakes failed me pretty early on.. I couldn't help it wonder what it would be like with 3.73s back there.. Anyway, I'll probably get them soon enough.. Sounds like its the way to go
     

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