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3.90's or 4.10's for a Non-Race Weekend Driver with ~400 RWHP?

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Old 02-02-2012, 07:52 PM
  #21  
JM20
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Originally Posted by JustinStrife
With 3.90's, I'm turning about 1800-1850 rpms at 70. So with 4.10's I'd think you'd be around 2000 rpms.
The chart states you should be at 1725 RPM's with the 3.90's at 70MPH.

I'm looking for it, must not be using the right search words.
Old 02-02-2012, 08:50 PM
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vetfeva2
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Originally Posted by JM20
The chart states you should be at 1725 RPM's with the 3.90's at 70MPH.

I'm looking for it, must not be using the right search words.
This is what I found...

Old 02-02-2012, 08:57 PM
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JustinStrife
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Originally Posted by JM20
The chart states you should be at 1725 RPM's with the 3.90's at 70MPH.

I'm looking for it, must not be using the right search words.
That might be what the chart says, but I find it's about 100 rpms off of what my car runs.
Old 02-02-2012, 09:58 PM
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Buggyman
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JM20 ... I am surprised at those numbers. I would have thought the 4:10 would have been up over 2000 rpm's. I am running the 3:42's I think, so going to 4:10's would make a lot of difference. I can sure relate to your comment of actually passing someone in 6th however it is fun to feel the go when shifting down to 4th or 5 th for a pass.
Old 02-03-2012, 05:34 PM
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Nofreee
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I went with 3.90's in my Z06, now that I've had them for a few months I'm glad I chose them over the 4.10.

Took me a few weeks to get used to the new gear ranges and I had to upgrade to a stickier tire to put the power down.
Old 02-03-2012, 05:39 PM
  #26  
Endeka
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4.10's would be 1800 RPM's (And apparently you can actually pass someone in 6th gear)
I've also read the highway fuel loss with 4.10's is approx ~2mpg
Where do you drive? The Autostrada? I can easily outpace almost any non-sports car in 6th at highway speeds.



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