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Old 11-24-2017, 09:38 AM   #1
RockinRam96
 
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Gear Swap

My dad has a 98 automatic trans with 4.11 gear ratio. Looking to swap to 3.55 or 3.73. Does the carrier need to be swapped, as well? Not sure where the cutoff is.


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Old 11-24-2017, 10:31 AM   #2
nasty 2005
 
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Yes you will need to swap it out, 4.10 up is a different carrier.
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Old 11-24-2017, 10:45 AM   #3
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The front will swap ring and pinion if it's 4x4. The rear as mentioned above needs the carrier swap.
 
Old 11-24-2017, 03:54 PM   #4
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Thanks guys. Forgot to mention it is a 4x4. Checked today and it only has a Dana 70 in it. I know where there is a Dana 80 with 3.55s and disc brakes. Maybe what I go with.


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Old 11-24-2017, 08:18 PM   #5
andy2

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When I swapped my 1997 dana 80 4:10's out for 3:54's the ABS light came on.The 3:73 and down carrier had moved the ABS tone/exciter ring over far enough that the ABS sensor would not pickup at low speeds.The position of the sensor must be different on the 3:54 axle housing.

Also I had to change the speedo gear out in the transfer case to get the speedo/odo to read correctly.

With yours being a 98 you might have the speedo/odo/abs all running from that axle sensor If I'm thinking correctly ? If that's true then an axle swap is a must.
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Old 11-24-2017, 08:23 PM   #6
andy2

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When I swapped my 1997 dana 80 4:10's out for 3:54's the ABS light came on.The 3:73 and down carrier had moved the ABS tone/exciter ring over far enough that the ABS sensor would not pickup at low speeds.The position of the sensor must be different on the 3:54 axle housing.

Also I had to change the speedo gear out in the transfer case to get the speedo/odo to read correctly.

With yours being a 98 you might have the speedo/odo/abs all running from that axle sensor If I'm thinking correctly ? If that's true then an axle swap is a must.
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Old 11-25-2017, 07:42 AM   #7
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Quote:
Originally Posted by andy2 View Post
When I swapped my 1997 dana 80 4:10's out for 3:54's the ABS light came on.The 3:73 and down carrier had moved the ABS tone/exciter ring over far enough that the ABS sensor would not pickup at low speeds.The position of the sensor must be different on the 3:54 axle housing.



Also I had to change the speedo gear out in the transfer case to get the speedo/odo to read correctly.



With yours being a 98 you might have the speedo/odo/abs all running from that axle sensor If I'm thinking correctly ? If that's true then an axle swap is a must.


It is a 98 with a 12 valve if that makes a difference.


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