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Best Street Gears

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Old 02-27-2009, 09:59 AM
  #11  
JDWalton
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I'll check to confirm, but I think at 70 I am at like 2400- 2600 rpm in 5th.
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Old 02-27-2009, 10:24 AM
  #12  
Norm Peterson
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Originally Posted by clentonz
But, I have just one question....one that I can't seem to find a defiant answer for....Cruising at exactly 70mph with 4.10s, what RPMs are y'all running in a S197 Mustang GT 5-spd manual?
You should be at 2500 assuming stock diameter tires. Plus or minus no more than 50 rpm.

If I was going to skip any gears it would only be 3rd on the way up. I'd be unlikely to downshift into second for driving through a corner that I did not have to come to a full stop for. Starting from a dead stop in 2nd even with 4.10's puts quite a bit of extra wear on your clutch because whether you realize it or not you do have to slip it a bit more.

Even though I don't have 4.10's in my '08 I have been through all of these situations and more in another car of similar weight where the overall gearing matched what's going on here so closely that you'd never notice any differences. It is a little higher-strung on the highway than necessary, but around town I've never found the different shift point speeds to have been a problem. The more you keep yourself aware of how hard you're making the engine work, the less a little "extra" shifting will bother you.


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Last edited by Norm Peterson; 02-27-2009 at 10:27 AM.
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Old 02-27-2009, 10:27 AM
  #13  
Riptide
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For sake of comparison.

Stock 235/55/R17. 27.18"

3.55 gears

1st gear tops out, 6200RPM, @ 41.78MPH
2nd gear tops out, 6200RPM, @ 70.60MPH
3rd gear tops out, 6200RPM, @ 106.97MPH
4th gear tops out, 6200RPM, @ 141.21MPH

4.10 gears

1st gear tops out, 6200RPM, @ 36.17MPH
2nd gear tops out, 6200RPM, @ 61.13MPH
3rd gear tops out, 6200RPM, @ 92.62MPH
4th gear tops out, 6200RPM, @ 122.26MPH
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Old 02-27-2009, 12:19 PM
  #14  
VistaGT
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You're going to what shift a few times less a day???

The extra grunt/milage is worth it IMO. It doesnt seem worth it to me...
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