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rear end compatibility

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Old Jul 18, 2011 | 02:19 PM
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rear end compatibility

Hey Guys I am considering a rear end swap due to a leaking pinion bearing seal and some metal in the oil and wonder if any of you know of any compatibility info between a 2005 4wd 6.0 ltr., of the same gear ratio to an early 99 F250 2wd 7.3 ltr
also are there any other ways to get this info?
Thank You,
Jim
 
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Old Jul 18, 2011 | 02:52 PM
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Some of the early Super Duty rear axles had one of the brake calipers on the forward side of the wheel. Not sure if this would be a problem though, from what I can see it should still bolt up fine. Are you wanting to put a 99 axle in a 05 truck or the other way around?
 
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Old Jul 18, 2011 | 02:59 PM
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rear end compatibility

Thanks for the reply. I am trying to put the 2005 in my 99. and yes you are right about the left brake caliper but just need a new line setup is all for that.
Mainly interested in dimensions spring attachments things like that.
Jim
 
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Old Jul 18, 2011 | 03:22 PM
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Originally Posted by Pebs99
Thanks for the reply. I am trying to put the 2005 in my 99. and yes you are right about the left brake caliper but just need a new line setup is all for that.
Mainly interested in dimensions spring attachments things like that.
Jim
I have always thought the axles were the same length but not positive. I think 2005 was the first year for coil springs up front so the wheel offset changed and possibly the wheel stud bolt pattern and size as well. I think you are safer to find a 2004 or earlier axle for the swap. Seems like you will have a few issues to resolve if you try and stab a 2005 in your 99 truck. Maybe someone else will add some comments based on their own experience.
 
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Old Jul 18, 2011 | 06:09 PM
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If I remember correctly the bolt pattern for the rims changed between the years on those axles. I don't think you will be saving much when you get the new rims, and you can kiss rotating your tires goodbye after that.
 
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Old Jul 18, 2011 | 07:49 PM
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New info the guy says the axle code is 3L73 10 54 M15... the gear ratio is the same any idea what the rest means??
Thanks fellas
 
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Old Jul 18, 2011 | 08:22 PM
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3L73 means a "limited slip" 3.73:1 rear end, 10 5 means it's a 10.5" Sterling rear end, 4M15 is a date/production code.
 
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Old Jul 19, 2011 | 09:04 PM
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is a C1 axle code on the door sticker compatible with a D1 sticker code?
please help. Thanks
 
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