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As i mentioned in my other topic i'm looking for my future GT500 and was reading up on some tech info. I saw in another topic that the GT500 only came with a 3.31 gear ratio.
Is there any reason why they went so low? If i remember correctly a manual stock GT came with a 3.55 gear ratio. After reading the "kissing cousins" topic, in which they say the same tranny in the CTS-V had a 3.73 gear ratio, i just wondered why it wasnt also stock for the GT500.
Are there any owners that changed the gearing for their GT500?
Also just read that the new 2010 Mustangs come with an optional 3.73 ratio.
Wish it'd had been an option when i bought my Stang. I changed my gearing 2 months ago and i get a dreaded noise when decellarating, maybe also when accelerating but i might not hear it due to the catless borla's. Again bought NEW 3.73's this time from FRPP along with the Master shim kit. Still waiting for my Royal Purple diff. fluid to arrive. (does the royal purple also require friction modifier?)
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2007 Mustang GT, Borla LT Headers, O/R X-Pipe, Borla Stingers, C&L CAI + SCT Brenspeed 87 Octane Tune, Steeda UDP's, 20" American Racing Wheels, And Other Appearance Mods.
2005 Nissan 350Z, Grand Touring, Nismo Cold Air Intake, Nismo Y-pipe Exhaust
The GT500 has so much power that putting in 3.73 gears would make it even less streetable than it already is.
No sense in putting in new gears, and getting the kinds of problems you're experiencing, with 500 hp on tap. Of course if you want to set new lap records what's a little gear whine?
The GT500 has so much power that putting in 3.73 gears would make it even less streetable than it already is.
No sense in putting in new gears, and getting the kinds of problems you're experiencing, with 500 hp on tap. Of course if you want to set new lap records what's a little gear whine?
And on that note, has anyone already tried going with smaller gears like say, 2.90s?
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2008 Shelby GT500<---- stock for now
LLR Member # 441
LEGEND LIME 05 Auto GT Premium
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BBK Ceramic coated shorties
Pypes O/R H-pipe
SCT X3 w/ Brenspeed 87 tune
Black 18x9 Shelby Torq Thrust M wheels
Slotted rotors and steel braided brake lines.
That's right.
The gear ratio of all gears are obviously different between the 2 trannies.
The first gear on the 6 spd will be shorter (taller number), so that makes up for the 3.31 rear axle ratio...
Usually the more engine hp/tq is the less aggressively it will be geared. The CTS-V may not have had the low/mid range power so the 3.73 was more fitting. Sometimes tranny gearing can play a role, like '03-'04 Machs and Cobras. Both have 3.55s, but 1st gear in the Mach's 5 spd. is 3.38, and just 2.97 1st gear for the Cobra's 6 spd. Again, the car with less power gets the needed steeper gear. '07-'09 GT500 is 3.31, 2010 is 3.55 with a taller .50 6th gear. 1/4 mi. got quicker while MPG went up. 3.73s are not available on GT500, only optional on GT and standard on KR and Super Snakes.
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3.31 on a GT500? but why..
