All of the information in this video will also apply to the GM 12 bolt as well as other differentials of this type.
The #FairmontProject needed a new differential. The stock 7.5″ wasn’t going to cut it. So I got an 8.8″ out of an ’86 Mustang. The Mustang rear end had Traction-lock, but I’m not reusing that carrier. Since I’m upgrading to 31 spline axles, I needed to upgrade it anyway.
Perhaps at some point I’ll go back and do a rebuild of the stock traction-lock differential, but since I was upgrading anyway, it really wasn’t necessary.
***I show how to make a ‘set up’ bearing in this video. I learned the hard way that this may not always work out. If you are going to use a set up bearing, I recommend purchasing 2 new pinion head bearings and using one for set up. You can purchase set up bearings separately, but they are way more expensive than just getting a second bearing.
The best place for answers to your automotive questions: https://www.ericthecarguy.com
Camera: Brian Kast
Thanks for watching!
Discussion about this video: https://www.ericthecarguy.com/kunena/18-The-EricTheCarGuy-Video-Forum/64381-ford-8-8-differential-complete-tear-down
Useful info
Ford 8.8 PDF: https://performanceparts.ford.com/download/instructionsheets/FordInstShtM-4209-8.pdf
A great book on Differentials: https://www.amazon.com/Ford-Differentials-How-Rebuild-Inch/dp/161325038X
Tools
Brake Tools: https://www.jbtoolsales.com/atd-tools-5147-drum-brake-tool-set-7-pc#oid=1002_1
Slide Hammer: https://www.jbtoolsales.com/sunex-3911-professional-slide-hammer-puller-set#oid=1002_1
Axle Bearing Attachment: https://www.jbtoolsales.com/astro-pneumatic-78820-rear-axle-bearing-service-set#oid=1002_1
Bearing Splitter: https://www.jbtoolsales.com/cta-tools-8065-large-bearing-splitter#oid=1002_1
20 ton press: https://www.jbtoolsales.com/sunex-tools-5720-manual-shop-press-20-ton#oid=1002_1
Pinion Flange Holder: https://www.summitracing.com/parts/aaf-all68372?seid=srese1&gclid=CIffkOfUgs0CFYU2aQodViUGqg
Zep Penetrating Oil: https://www.zepautomotive.com/product/Super-Rust-Breaker
Related Videos
Fairmont Playlist: https://www.youtube.com/watch?v=L22GsHQi7tU&list=PLSzhQ6St-ov2nxWVKCeU14Vt7JJ_QSZvs&spfreload=5
Rear Brake Replacement (Drum): https://www.youtube.com/watch?v=MCpCkun2qxA
Hoarding Parts: https://www.youtube.com/watch?v=EdKH2NzzkNs
**Answers to your automotive questions found here: https://www.ericthecarguy.com/faq
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Stay Dirty
ETCG
Due to factors beyond the control of EricTheCarGuy, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. EricTheCarGuy assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. EricTheCarGuy recommends safe practices when working with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video. Due to factors beyond the control of EricTheCarGuy, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained in this video is the sole responsibility of the user and not EricTheCarGuy.
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