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10% Lower Pulley vs Gears

Discussion in '2013-14 Shelby GT500' started by scottGT500, Apr 6, 2014.

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  1. Apr 6, 2014 #1
    scottGT500

    scottGT500 Active Member Established Member

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    Hey guys! My plan is to do another round of mods very soon. I currently have Van's 13-6 kit with a 2.4" pulley.

    I plan on adding a set of American Racing headers with the O/R H. I am debating either doing 3.73's or a 10% lower. I know the 10% + 2.4" upper would be right on the top of the 93 octane limit. The O/R headers should bring the actual PSI back down within limits from what I have been told.

    This car has been my daily driver...but it isn't any more. So it will be just a pleasure toy that I want to be a beast.

    What would you do? 10% lower or 3.73's?

    Scott:beer:
     
  2. Apr 6, 2014 #2
    MikeHoncho

    MikeHoncho Who cares... Established Member

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    My vote would be gears.
     
  3. Apr 6, 2014 #3
    1 Alibi 2

    1 Alibi 2 If not today, when ?????? Established Member SVTP OG 4 Life

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    3.73's are going in my 14.
     
  4. Apr 6, 2014 #4
    lockman

    lockman New Member Established Member

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    Gears
     
  5. Apr 6, 2014 #5
    Sigus

    Sigus Member Established Member

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    Gears makes sense
     
  6. Apr 6, 2014 #6
    stutter

    stutter eat me Established Member

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    I don't have a 2.4 upper but I got a 13-6 kit with the 10% ati lower and ARH 1-7/8 headers AND 3.73 gears from Van. I am doing both at once lol
     
  7. Apr 6, 2014 #7
    biminiLX

    biminiLX never stock Premium Member Established Member

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    No daily driver and mods, definitely need drag radials and then gears! Gears will help save your clutch BUT I think you'll want/need something much stickier than the stock tires :)
    -J
     
  8. Apr 6, 2014 #8
    scottGT500

    scottGT500 Active Member Established Member

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    Dang! 100% for gears so far...

    After thinking about it...the gears will give the "feel" of more power without raising PSI which adds more heat ect...thanks for the input guys...keep 'em coming!

    Scott
     
    Last edited: Apr 6, 2014
  9. Apr 6, 2014 #9
    scottGT500

    scottGT500 Active Member Established Member

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    555R's are on my True Forged Chicanes already...you are definitely correct biminiLX!!!

    Scott
     
    Last edited: Apr 6, 2014
  10. Apr 6, 2014 #10
    biminiLX

    biminiLX never stock Premium Member Established Member

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    Nice!
    First time you pull out of the shop with the gear you will know why :)
    -J
     
  11. Apr 6, 2014 #11
    scottGT500

    scottGT500 Active Member Established Member

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    Really? That much better?
     
  12. Apr 6, 2014 #12
    biminiLX

    biminiLX never stock Premium Member Established Member

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    I'll wait and have you tell me :)
    Just much easier to drive and you can actually use 6th.
    -J
     
  13. Apr 6, 2014 #13
    stutter

    stutter eat me Established Member

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    Yeah I can't wait to get mine in, I can barely use 6th, and mines a DD!!
     
  14. Apr 6, 2014 #14
    scottGT500

    scottGT500 Active Member Established Member

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    You are using 4.10's right? That might be overkill for me @700 to the ground lol...

    I hope you are right!! Which I am confident you will be...

    Scott
     
  15. Apr 7, 2014 #15
    scottGT500

    scottGT500 Active Member Established Member

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    ttt
     
  16. Apr 7, 2014 #16
    Fastfish420

    Fastfish420 New Member Established Member

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    Do both you will love it! I have 4.10 with the 10% and its a rocket ship!
     
  17. Apr 7, 2014 #17
    5BANERZ

    5BANERZ New Member Established Member

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    You must only drive in town. The GT500 owner's manual supplement recommends shifting into 6th gear at 43MPH. LOL!!! Those recommended shift points crack me up.
     
  18. Apr 7, 2014 #18
    stutter

    stutter eat me Established Member

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    Yeah you can't get any power out of it if you shift into 6th before 60mph!! Even then it shudders till about 70mph!!
     
  19. Apr 7, 2014 #19
    David Neibert

    David Neibert Member Established Member

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    I don't shift into 6th at anything under 75 mph, because it feels like the engine is lugging.

    David
     
  20. Apr 7, 2014 #20
    biminiLX

    biminiLX never stock Premium Member Established Member

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    Not with 4.10s, and parking lots and rolling stops are 2nd.
    My girlfriend thought it was an improvement (wife didn't notice ;-) )
    -J
     
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