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Transmissions and Drivetrain Need help with your trans? Problems with your axle?

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Old 05-27-2008, 10:21 AM   #1
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Join Date: Feb 2008
Location: Waynesville ohio
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Car: 1986 corvette Z51
Engine: L98
Transmission: doug nash 4+3 speed
Axle/Gears: 3:42 posi

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gas between 2:73 to 3:73 posi

Ok right now i have the 2:73 and i never am on the highway. I am going to put 3:73 posi in it and woundering what my mpg will do?
thanks
kevin
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Old 05-27-2008, 03:07 PM   #2
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Car: 02 Mustang
Engine: 3.8 about to be punched out to 4.3
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Axle/Gears: 3.73 Detroit true trac

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Re: gas between 2:73 to 3:73 posi

it wont go down to much, my old 92 used to do 20s on the highway even with 3.73s
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Old 05-27-2008, 10:30 PM   #3
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Re: gas between 2:73 to 3:73 posi

Quote:
Originally Posted by abyliks View Post
it wont go down to much, my old 92 used to do 20s on the highway even with 3.73s
I bet it goes down 30%.
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Old 05-27-2008, 10:30 PM
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