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Gear Ratio?

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Old Aug 4, 2005 | 03:30 AM
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Default Gear Ratio?

I have a C6 with Z51, how can I tell what gear ratio I have?? VIN#1G1YY24U25103718
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Old Aug 4, 2005 | 03:41 AM
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Originally Posted by '03blackonblack
I have a C6 with Z51, how can I tell what gear ratio I have?? VIN#1G1YY24U25103718
you have the close-ratio; if it's MN6 - if you have the automatic - you have upgraded rear-end to 3.15 ratio.

I lifted this from the forum the other day - can someone help share credit?

Axle Ratio's
2.56*x6L80E = [10.31, 6.05, 3.92, 2.95, 2.18, 1.71] (*expected axle with A6)
2.73*x4L65E = [ 8.35, 4.45, 2.73, 1.91] (*current std A4 axle)
3.15*x4L65E = [ 9.64, 5.13, 3.15, 2.21] (*current hi perf A4 axle)
3.42*xT56 = [ 9.10, 6.09, 4.45, 3.42, 2.53, 1.71] (*current M6 axle)
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Old Aug 4, 2005 | 04:46 AM
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Default Gear Ratio Sucks on 4th 5th and 6th.

[QUOTE=jkonkle]you have the close-ratio; if it's MN6 - if you have the automatic - you have upgraded rear-end to 3.15 ratio.

I lifted this from the forum the other day - can someone help share credit?

Axle Ratio's
2.56*x6L80E = [10.31, 6.05, 3.92, 2.95, 2.18, 1.71] (*expected axle with A6)
2.73*x4L65E = [ 8.35, 4.45, 2.73, 1.91] (*current std A4 axle)
3.15*x4L65E = [ 9.64, 5.13, 3.15, 2.21] (*current hi perf A4 axle)
3.42*xT56 = [ 9.10, 6.09, 4.45, 3.42, 2.53, 1.71] (*current M6 axle)[/QUOTEI



I have the Z51 and I think that the ratio on 4th 5th and 6th are poorly spaced; they are too far apart. 1-3 gears are just perfect.
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Old Aug 4, 2005 | 08:07 AM
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Let's back up a minute. He could have meant transmission ratios, but likely meant rear axle.

If it's an automatic, the Z51 package gets you the 3.15 upgrade as part of Z51. All six speeds have 3.42 ratios.
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Old Aug 4, 2005 | 01:43 PM
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Yes I wanted to know there rear end gear ratio. It is an automatic.
I guess from what you are saying I have a 3:15 gear ratio. Thanks guys. Great forum by the way.
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