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Old 02-25-2013, 07:00 PM   #1
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3.73 gears

I have a 2001 Ford mustang 3.8. I want to Change gears to 3.73. I have 18x8 tires. How bad will speedometer be?
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Old 02-25-2013, 07:04 PM   #2
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Shouldn't be that bad, you will learn to adjust your speed. My truck has the speedo off and i learned the difference. But if you have an auto you will need a re-calibration because it will mess up the shift points.
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Old 02-25-2013, 09:10 PM   #3
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Quote:
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I have a 2001 Ford mustang 3.8. I want to Change gears to 3.73. I have 18x8 tires. How bad will speedometer be?
auto or manual? you will also need to either swap rear ends to an 8.8 or swap to a limited slip
differential, get some gear oil and the bearing install kit.
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Old 02-26-2013, 03:01 PM   #4
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Auto. I will be getting a Ford racing traction-lok
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Old 02-26-2013, 03:21 PM   #5
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Auto. I will be getting a Ford racing traction-lok
then you would want the recal...autos are touchy when it comes to gear changes...if it was a 5 speed adjusting your speed would be fine, but not with an auto...either buy a tuner or pay for the recal
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Old 02-26-2013, 03:30 PM   #6
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Sweet. Would sct 3015 work well
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Old 02-26-2013, 03:42 PM   #7
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Sweet. Would sct 3015 work well
yes sir. also the ford racing tlok is no longer being sold new. if you are buying online the only choice you have is the auburn LSD.
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Old 02-26-2013, 03:52 PM   #8
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Oh. Amazon had it for 444.00. I'll check that one out. Thanks.
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Old 02-26-2013, 03:57 PM   #9
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Not Amazon, www.Stangmods.com
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Old 02-26-2013, 09:39 PM   #10
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Not Amazon, www.Stangmods.com
yea it's a bummer. if you can find a GT rear off Craigslist go for that. a bit of a more solid rear end then all you need is the gears, gear oil, and the install kit
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