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V8 and V6 Transmissions / Driveline (6L80 / 6L50 / TR6060 / AY6) Driveshafts | Differentials | Gears | Rearends | Clutch | Shifters

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Old 10-02-2011, 10:43 AM   #1
Cornflakes'Camaro
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MPG for 3.73 or 4.10?

Does any one know the highway MPGs for 3.73 or 4.10 gears? Also any input on what gears are the best for our cars would be great. Thanks yall
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Old 10-02-2011, 04:10 PM   #2
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I was getting 19.5 mpg before gears and im getting 19.0 with my 4.10s now, but i only do weekend city driving. 2010 ss m6
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Old 10-06-2011, 09:02 AM   #3
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I am getting around 25mpg on the highway with my 3.70 gears from ADM. That is running around 70-75mph around 2000 rpm's and about 16-17mpg City. I have a Maggie, Cam, Headers, Intake, Tune as well. Over 600rwhp. Hope this helps !
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Old 10-06-2011, 09:27 AM   #4
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I have AAM 3.70's in my car and during a recent 430 mile one way trip recorded 24.6mpg at speeds between 60mph and 90+mph with the engine mods listed in my signature. Car consistently gets 17.4mpg just driving around town, stop and go driving. IMO the 4.10/4.11's are a tad too much for most folks and have had problems, the new AAM 3.91's may be the best bet or the AAM 3.70's.
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Old 10-06-2011, 09:45 AM   #5
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Quote:
Originally Posted by Cornflakes'Camaro View Post
Does any one know the highway MPGs for 3.73 or 4.10 gears? Also any input on what gears are the best for our cars would be great. Thanks yall
Our customers typically report only a 2-3 MPG change after a gear swap. My general recommendation for street driven SS applications is 3.73 for the auto cars and 4.11 for the manual. The more aggressive transmission gearing in the auto raises the cruising RPM a little higher than a lot of people want with the 4.11s. Below is a link to an article on our blog that discusses this in more detail and has complete number on the different combinations. If you have any questions afterwards feel free to shoot me a PM.

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