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My rear end bit the dust...

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Old 07-11-2015, 09:00 PM
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My rear end bit the dust...

On my way in to work this morning, I noticed a louder than normal whine coming from the rear end of my truck('95 F150 XLT). Working at a dealership, I had one of the techs I work with raise it on the lift to have a look see. Well his prognosis was grim and he showed me where the rear end had hemorrhaged gear oil all over the place. His advice to me was to find a replacement rear end because mine is dead.

After punching in my VIN on the VIN decoder elsewhere on this forum, I found out that I have an 8.8 inch rear end with a 2.73 rear axle ratio.

Since I have to replace the rear end, can't I just use a good old 9 inch rear with a Traction Loc differential? What do you guys think?
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Old 07-11-2015, 09:05 PM
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Have you inspected the parts inside? Those 8.8's are pretty tough rear ends...Just replace a few bearings and seals and your usually good to go.
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Old 07-11-2015, 09:22 PM
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Have you inspected the parts inside? Those 8.8's are pretty tough rear ends...Just replace a few bearings and seals and your usually good to go.
If I went that route, could I yank out the gears and replace it with this?

Click the image to open in full size.
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Old 07-11-2015, 10:34 PM
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IF it is for a 8.8" and it matches your Axle splines then yes. I think your axles are 31 Splines. I could be wrong. You would have to check.

Although, You would need to have it professionally installed.
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Old 07-12-2015, 01:06 AM
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Originally Posted by frank5079 View Post

Since I have to replace the rear end, can't I just use a good old 9 inch rear with a Traction Loc differential? What do you guys think?
No place for the VSS, so no speedometer and rough shifting along with codes out the wazoo if you have a E4OD transmission...
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Old 07-12-2015, 04:01 AM
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No place for the VSS, so no speedometer and rough shifting along with codes out the wazoo if you have a E4OD transmission...

I have a 5 speed manual transmission...



Quote:
Originally Posted by Toplait View Post
IF it is for a 8.8" and it matches your Axle splines then yes. I think your axles are 31 Splines. I could be wrong. You would have to check.

Although, You would need to have it professionally installed.
It is for an "8.8" rear end. I did this to the rear end of my Chevy Monza, several years ago, but it had "C" clips which held the axles to the differential gears. Pull them and the axles slide out and you just pop the LSD unit in place, slide the axles back in, reinstall the "C" clips, and the rear cover, and refill with LSD specific gear oil.
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Old 07-23-2015, 06:51 PM
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If I swap out my rear axle housing with one from a '95 F250, will the 5 lug axles from my rear end swap in place of the 8 lug axles of the '95 F250 rear??
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Old 07-23-2015, 07:13 PM
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If I swap out my rear axle housing with one from a '95 F250, will the 5 lug axles from my rear end swap in place of the 8 lug axles of the '95 F250 rear??
No...the F250 uses a Sterling 10.25" rear axle. Completely different animal.
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Old 07-23-2015, 07:39 PM
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Now would be the time to swap in some sensible gears.. like 3.55. If you want a little tidier swap go find a complete 3.55LS axle at the junkyard, have it gone through and bolt that in under the truck.
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Old 07-24-2015, 12:09 AM
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If the differential was run without or very low oil the front pinion bearings are likely toasted, replacing the spider gear assembly with a LS won't fix this.
Unless you are very good at setting gears (it's more complicated and expensive to have done then you would think) I would recommend finding a used axle with a 3.55 or 3.73 gear ratio and then think about changing the spider gear assembly.
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Old 07-24-2015, 06:40 AM
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As long as it was only the bearings and the the housing is still undamaged, replace the bearings and get back on the road. If you want to add a LS that reuses the same carrier that is up to your wallet. If a different carrier is needed it would have to be set up correctly.
You could get another 8.8 from the junkyard with a better ratio from a Bronco or F150. As stated you need the speed sensor in the rear diff for the speedometer and ABS to work.
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