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Rear End Gears

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Old 06-20-2013, 07:37 AM
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Hwbzrr
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Default Rear End Gears

New guy here, Hopefully I'm posting in the right place here. I just purchased a 2004 Mach 1 with the 5sp. I'm looking for a little more get up and go off the line and was wondering if there Is there a way to tell if the rear end gears have been changed or if they are the stock. The rest of the car is bone stock except for a flowmaster exhaust.
Thanks!
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Old 06-20-2013, 02:11 PM
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Sonic Mustang
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Originally Posted by Hwbzrr
New guy here, Hopefully I'm posting in the right place here. I just purchased a 2004 Mach 1 with the 5sp. I'm looking for a little more get up and go off the line and was wondering if there Is there a way to tell if the rear end gears have been changed or if they are the stock. The rest of the car is bone stock except for a flowmaster exhaust.
Thanks!
If your bone stock Mach 1 has original size 245/45 17 tires (25.7" diameter if I remember), then:

70MPH in 5th gear = 2,000 RPM.
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Old 06-20-2013, 02:12 PM
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Originally Posted by Hwbzrr
New guy here, Hopefully I'm posting in the right place here. I just purchased a 2004 Mach 1 with the 5sp. I'm looking for a little more get up and go off the line and was wondering if there Is there a way to tell if the rear end gears have been changed or if they are the stock. The rest of the car is bone stock except for a flowmaster exhaust.
Thanks!
If your bone stock Mach 1 has original size 245/45 17 tires (25.7" diameter if I remember), then:

70MPH in 5th gear = 2,000 RPM = 3.55 gears.
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Old 06-22-2013, 07:25 PM
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Hwbzrr
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Thanks!
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