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Speed in Gears


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Can I have a Sticky Please. Updated on 2/8/06 for 4.88 gears. The question of top speed, speed with 4.11, ...



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Old 05-18-2006, 09:29 PM
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Speed in Gears

Can I have a Sticky Please.

Updated on 2/8/06 for 4.88 gears.

The question of top speed, speed with 4.11, 4.56, 4.88, 5.13, 5.38 rear ends, and speed in gears keeps coming up. I figured I would compile it in one spot and then ask Roktman to make it a sticky.

The data for the 4.11 is straight out of Car and Driver. I extrapolated the speeds for the other gear ratios from that data. I also dropped the Transmission Gear Ratio and MPH/1000 rpm from the other data sheets as it does not contribute to the data that most owners are interested in.

Transmission 6-speed manual
Final-drive ratio 4.11:1, limited slip
Gear Ratio Mph/1000 rpm Max test speed
I - 2.66 - 8.3 - 50 mph (6000 rpm)
II - 1.78 - 12.4 - 74 mph (6000 rpm)
III - 1.30 - 17.0 - 102 mph (6000 rpm)
IV - 1.00 - 22.1 - 133 mph (6000 rpm)
V - 0.74 - 29.8 - 153 mph (5100 rpm)
VI - 0.50 - 44.2 - 153 mph (3500 rpm)

Okay, some quick conversions for 4.56 gears.
I - 44.5 mph @ 6000rpm
II - 65.9 mph @ 6000rpm
III - 90.8 mph @ 6000rpm
IV - 118.4 mph @ 6000rpm
V - 153 mph = 5726rpm (160.3 mph @ 6000rpm)
VI - 153 mph = 3930rpm (6000rpm in sixth? To damn fast)

For 4.88's
I - 41.4 @ 6000rpm
II - 61.3 @ 6000rpm
III - 84.4 @ 6000rpm
IV - 110.1 @ 6000rpm
V - 149.1 @ 6000rpm
VI - 220.2 @ 6000rpm

For 5.13's
I - 38.9 @ 6000rpm
II - 57.7 @ 6000rpm
III - 79.5 @ 6000rpm
IV - 103.6 @ 6000rpm
V - 140.3 @ 6000rpm
VI - 207.2 @ 6000rpm

For 5.38's
I - 36.5 @ 6000rpm
II - 54.1 @ 6000rpm
III - 74.5 @ 6000rpm
IV - 97.1 @ 6000rpm
V - 131.5 @ 6000rpm
VI - 194.2 @ 6000rpm

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Old 05-18-2006, 09:43 PM
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You got it
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Old 05-19-2006, 01:58 AM
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those are some nice numbers.
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Old 05-19-2006, 06:55 AM
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Quote:
Originally Posted by mole'
those are some nice numbers.
I made them up. Just don't tell anyone, and it will be our secret.
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Old 05-23-2006, 11:54 PM
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How about the RPMs you would be turning at 80mph in 6th with the listed gear ratios?
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Old 05-24-2006, 07:06 AM
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Quote:
Originally Posted by RatMotor
How about the RPMs you would be turning at 80mph in 6th with the listed gear ratios?
I will do that this weekend.
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Old 05-24-2006, 07:43 PM
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Quote:
Originally Posted by RatMotor
How about the RPMs you would be turning at 80mph in 6th with the listed gear ratios?
Here you go. I will double check them this weekend, but I believe they are correct.

4.10 = 1810.0

4.56 = 2055.0

4.88 = 2181.6

5.13 = 2316.8

5.38 = 2471.4
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Old 05-26-2006, 01:01 AM
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Bitchin'
Thanks
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Old 05-26-2006, 01:20 AM
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I had 4:10 and now a 4:56 axle from an 06. Its a coincidence , but 80 mph was my comparison point.
4:10 @ 80 MPH= 1600=1650 RPM
4:56 @ 80 MPH= 1850=1900 RPM

This is what I measured aprox (pretty damn close though) on my speedo.





Quote:
Originally Posted by RatMotor
How about the RPMs you would be turning at 80mph in 6th with the listed gear ratios?

Last edited by silversrt; 05-26-2006 at 01:26 AM.
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Old 05-26-2006, 07:03 AM
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Quote:
Originally Posted by silversrt
I had 4:10 and now a 4:56 axle from an 06. Its a coincidence , but 80 mph was my comparison point.
4:10 @ 80 MPH= 1600=1650 RPM
4:56 @ 80 MPH= 1850=1900 RPM

This is what I measured aprox (pretty damn close though) on my speedo.
Looks like I better go back and double check my figures this weekend. Thanks for the info.
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