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Unread 07-08-2007   #1 (permalink)
stangsnstyle is offline Rookie

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Default 2001 Mustang 5-Speed, what is the stock gears?

I need to know what the stock gear ratio is? I searched it and all I can come up with is 2.73 but that sounds absurd for an '01 w/5speed. Does anyone know?

2001 Mustang 5-speed Manual 3.8 V6
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Unread 07-10-2007   #2 (permalink)
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Mustang's 3.8-liter split-port V6 engine develops 190 horsepower at 5250 rpm, with 220 foot-pounds of torque at 2750 rpm. All models, regardless of engine or transmission, have a 3.27:1 rear axle ratio.



http://www.internetautoguide.com/rev...001/index.html
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Unread 09-17-2009   #3 (permalink)
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so i have an 2001 cobra..what are the stock gears for it..i currently have 4:10's but i don't like them cuz i drive to many highway miles everyday...i need to know what to go back too..
thx
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Unread 09-29-2011   #4 (permalink)
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Default 2001 gears

i bought a 2001 v6 5speed. the previous owner said he installed 373 gears, positrac syncro unit. my speedometer is off about 12-15 mph. going by gps i run 65mph, speedo says 80, rpms at about 2300 - 2400, tires are a 195/60/15. is there any way to sync the speedometer and maybe lower the rpms to runner better hwy. would taller tires be better. also have dual exhaust cross pipe, magnaflow mufflers, no cats.
thanks in advance
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Unread 09-30-2011   #5 (permalink)
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Quote:
Originally Posted by 2001SilverSteed View Post
so i have an 2001 cobra..what are the stock gears for it..i currently have 4:10's but i don't like them cuz i drive to many highway miles everyday...i need to know what to go back too..
thx
If you have 4.10's and don't like them on the highway or interstate then I suggest 3.73's for you maybe even a set of 3.55's but most will tell you 3.73 for a 5spd doing mostly highway driving!
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Unread 09-30-2011   #6 (permalink)
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Quote:
Originally Posted by alfredlewis View Post
i bought a 2001 v6 5speed. the previous owner said he installed 373 gears, positrac syncro unit. my speedometer is off about 12-15 mph. going by gps i run 65mph, speedo says 80, rpms at about 2300 - 2400, tires are a 195/60/15. is there any way to sync the speedometer and maybe lower the rpms to runner better hwy. would taller tires be better. also have dual exhaust cross pipe, magnaflow mufflers, no cats.
thanks in advance
The problems you mentioned all could basically be taken care of with a handheld tuner!
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Unread 09-30-2011   #7 (permalink)
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Quote:
Originally Posted by 02stang46 View Post
The problems you mentioned all could basically be taken care of with a handheld tuner!
Except lowering the RPMs for highway driving. That would require new gears, again. Or even get a new 6 speed trans!
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Unread 09-30-2011   #8 (permalink)
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Quote:
Originally Posted by IsaidWOT View Post
Except lowering the RPMs for highway driving. That would require new gears, again. Or even get a new 6 speed <acronym title="transmission">trans</acronym>!
6 speed trans won't really fix that. The only real benefit aside from it being a little stronger than say a TR-3650 is that the gear ratios are closer to one another. But if you compare the 6th gear ratio on a 03 Cobra trans to that of 5th gear in a 3650 trans like the 01-04 GT's have, they're nearly identical. In a typical 5 speed, 4th is a 1:1 ratio and 5th is the overdrive gear, whereas in a 6 speed 5th is the 1:1 and 6th is the overdrive gear.
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Unread 09-30-2011   #9 (permalink)
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Quote:
Originally Posted by SoCal2V View Post
6 speed <acronym title="transmission">trans</acronym> won't really fix that. The only real benefit aside from it being a little stronger than say a TR-3650 is that the gear ratios are closer to one another. But if you compare the 6th gear ratio on a 03 Cobra <acronym title="transmission">trans</acronym> to that of 5th gear in a 3650 <acronym title="transmission">trans</acronym> like the 01-04 GT's have, they're nearly identical. In a typical 5 speed, 4th is a 1:1 ratio and 5th is the overdrive gear, whereas in a 6 speed 5th is the 1:1 and 6th is the overdrive gear.
One advantage of a 6 speed trans would be saving gas though. Because of the closer gear ratio's you can change gears at lower rpm's and still get the same speed.
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Unread 09-30-2011   #10 (permalink)
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Quote:
Originally Posted by 02stang46 View Post
The problems you mentioned all could basically be taken care of with a handheld tuner!
do my numbers make sense. could those tires cause that big diffence. i've tried using some of the calculators and my own math, but come up with different numbers like a 2.39 ration gears. that could be because of the 5th gear ratio combined with the rearend? this is my first mustang as you can probly tell. thanks for all the input.
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Unread 10-01-2011   #11 (permalink)
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Your speed is off if your gears have been changed or if you're using different sized tires, maybe a combination of both. Going back to stock 3.27 gears and stock tire size will correct the issue, but you can also have it corrected by reprogramming the ECM.
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Unread 10-01-2011   #12 (permalink)
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Quote:
Originally Posted by IsaidWOT View Post
Your speed is off if your gears have been changed or if you're using different sized tires, maybe a combination of both. Going back to stock 3.27 gears and stock tire size will correct the issue, but you can also have it corrected by reprogramming the ECM.
Yup, going back to original tire sizes (inside the gas cap there should be a sticker saying what the original tire size, tire rating, and air pressure is) and original 3.27 gears. But I believe it would be cheaper to just get the ECM reprogrammed, like IsaidWOT mentioned. You could either have this be done by a shop, or buy a tuner yourself for around $300-$400 dollars.

Side note: I believe the stock tires on a New Edge GT Mustang (01-04) should be 245/45 ZR17, where the Z is the performance rating of the tires. If I am not mistaken, the 99-00 New Edge GT's came with 16 inch rims instead of 17 inch, which was optional? Correct me if I am wrong, but just thought I'd let you know.
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Unread 10-01-2011   #13 (permalink)
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Here's a gear ratio calculator, just enter your transmission type (OP should have a T-5) and rear tire size.

PaladinMicro
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