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What is your RPM with 28s and 4.56 gears?

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Old 01-20-2011, 04:32 AM
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Default What is your RPM with 28s and 4.56 gears?

I am on the verge of ordering me a midwest 9. I am pretty sure I am going with 4.56s, so I am just wondering if anyone is running 28s and 4.56 gears on the street all the time what RPMs you are running on the highway at say 70 or so? Thanks for your time.
Old 01-20-2011, 08:13 AM
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Under make a selection, pick 98 fbody, then adjust your rear gear, tire diameter and redline.

http://www.f-body.org/gears/
Old 01-20-2011, 10:17 AM
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Originally Posted by Steve Gunn
Under make a selection, pick 98 fbody, then adjust your rear gear, tire diameter and redline.

http://www.f-body.org/gears/
According to this, if you have an A4 you'll be at a steady 2700 RPM at 70 MPH. if you have an M6, You'll be around 1950 RPM at 70 MPH.
Old 01-20-2011, 12:39 PM
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i have 4.11's in an a4 and driving around at 70 nets me right at 2350-2375 so 2700 sounds spot on for 4.56 gears! Make more power so you can use a 3 series gear! LOL More power = more streetable cruising rpms in this case.
Old 01-20-2011, 06:40 PM
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I forgot to mention it is a 6speed car. I think I am going with the 4.56s. Thanks for your time.
Old 01-20-2011, 07:35 PM
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I have this setup and is right at 2000 rpm, Either way there awesome you be fine.
Old 01-21-2011, 01:25 AM
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Thanks man. I can't wait to get it.




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