chzuck

I have a 2005 F-150 with 4.2 V6 that I bought used a year ago. The new vehicle window sticker and the data on the door says it has a 3.73 8.8 LS differential. I discovered that it was not working as it should, so I removed the cover and to my surprise, it is not a LS diff. Apparently someone changed the carrier to a conventional rear. Is there anything besides the carrier that I need to convert this back to LS?

Marc D

What did the manufacturers tag bolted to the rear end diff. cover say? LSD spyder gears look very similar to standard gears. I would suspect the rear end was serviced w/o adding friction modifiers to the gear oil. This will make the vehicle act like it doesn't have LSD.

chzuck

The tag on the cover indicates that it is not a LSD. I removed the left side spider and there are no clutch packs. Maybe a Ford mistake?

RLXXI

Someone must have replaced the rear axle assembly. I'm almost positive you can replace just the chunk assembly with a LS one but the tools and skill set required are not exactly DIY. Would be cheaper and easier to get an entire rear end from a salvage yard. That can be swapped out in less than a day with minimal tools and a basic mechanical aptitude.

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chzuck

I have written to the original owner to see what he will tell me. I could see the rear cover was off before. I plan on getting the LS carrier "chunk" and having an expert set everything up for me.

RLXXI

Average cost parts/labor is about $700, or at least it was 10 years ago.

Good luck.

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chzuck

My fellow is retired and charges about $125 for the job to change it out.
I can get a carrier at a U-pull-it yard for about $60 + about $120 for a clutch kit.

RLXXI

I quoted new parts with warranty. good luck with used.

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chzuck

I don't think I would be willing to spend that much money to have LS. If I had that much to spend it would include a better LS than the Ford LS.

RLXXI

I don't think you would be satisfied with Anything Ford, do you troll often?

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