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I need help. I am going to to install 3.73 gears with an eaton posi. This will be my first and wanted to know if there is a good link that will help me to do this task, especially with finding out how to figure out the backlash. will appreciate any info
 

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IMHO if you do not have the tooling or experience have a qualified shop do it. should be about $150-$200.

...also don't be surprised if you need to replace axles and outer bearings

if you do it yourself and don't have a press to remove and install the new reluctor gear than take the pinion shaft and new reluctor gear to a machine shop for that work
 

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I need help. I am going to to install 3.73 gears with an eaton posi. This will be my first and wanted to know if there is a good link that will help me to do this task, especially with finding out how to figure out the backlash. will appreciate any info
this is almost like handing a loaded gun to a baby but here goes

http://www.yukongear.com/Downloads.aspx
 

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I need help. I am going to to install 3.73 gears with an eaton posi. This will be my first and wanted to know if there is a good link that will help me to do this task, especially with finding out how to figure out the backlash. will appreciate any info
best info to you. i have been working on cars for 15 years and airplanes/helicopters for 10 years. i would not recommend doing that unless you have someone with you who can show you or walk you through this. if the measurements are not exact, you will end up wasting time and money buying new gears. good luck to you if u decide to do it. a good shop (i.e. dealer or transmission specialist) will take about 6-8 hours doing it PROPERLY. i was charged $300 for my swap. and thats a reasonable price unless you have a hookup on labor.
 

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Remember, It's not a mistake, it's a learning experience...
I think you need to invest a lot in these tools, micrometers and such. Maybe not worth it, if only do it once.

I would be real interested in having someone show me the swap process but not be brave enough to attempt it alone. I am the kind of guy whose repairs always turn into long nightmares, dropped bolts, stripped threads, broken wires or vacuum lines... I can pretty much assume something will go wrong. For me, a successful repair means I don't injure myself, and the car doesn't fall off the rack. cwm3

I applaud your bravery anyway. I guess the real problem is I already have the gears I want. Unless I get the urge to install a huge truck tire and 4.10s, which is not likely.

Take a lot of pictures and post them here...
 

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take it to a shop and pay to get it done correctly, you will not be able to set the backlash correctly. you'll also need pressed and air tools because the rear has to come apart almost entirely...
 

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take it to a shop and pay to get it done correctly, you will not be able to set the backlash correctly. you'll also need pressed and air tools because the rear has to come apart almost entirely...
+1. Do not do this yourself. You will be buying a new set of gears after you screw it up. It is not a "learning experience". Also, if you pay a differential shop to install it and there is a problem, you have somewhere to go with it besides your own wallet.
 
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