Are gears a do it yourself or are they really hard to do?

 

It's not hard but it takes a lot of patience to get it right. The Ford shop manual for my old truck was very specific on the setup requirements and I think anyone could do it. The biggest problem is that you really need a pit or a hoist so that you can access the diff easily.

When I changed the gears on my Expedition, I had a buddy who runs a 4x4 shop do it for me and I am happy with the results.

We also found that the front diff bearings were in bad shape on a truck with <10k miles, so I got them replaced as well.

Ian

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99 Expedition EB
5.4l, 4x4, 4.10'S
WMS Tube, Bassani Cat Back Exhaust, Superchip Flipchip

 

Installing gears in differential are no big deal, if you know what you are doing. Otherwise, I would highly recomend that you seek a proffesional to do the job. I (as a professional gear-person), have seen countless headaches that "do it yourselfers" have inflicted upon themselves.
Special tools, such as: dial indicator, micrometer, and torque wrench are needed to set-up a diff. I personally have had very good luck with OEM Ford & US gear ring & pinion sets.


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1999 Teal Blue F-150 S/C
4.6L, XLT, 3.55 L/S 4x2
Tow pkg., Rhino liner, Engine block heater & Swiss hard toneau cover. Premium sound
255/75 R16 Generals-owl
This" is Mama's pride"

 

Mine were done here. Not a single problem with noise, chatter, etc.

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1997 4x4 Expedition- 4.6L, true dual exhaust w/Ravin DI/DO, K&N air filter, SuperChip, airbox mods, Edelbrock shocks, 285/75R16 BFG ATs, 2000 F150 "XLT" wheels, 4.10 gears, Auburn LS, Clarion In-dash CD player, Smitty Bilt push bars and nerf bars.

2000 4x4 F250 SD XLT SuperCab SWB- 6.8L, Offroad Pkg, Camper Pkg, 4.30LS, Tape & CD player, Remote Keyless Entry, Sliding back glass, tinted windows, 265/75R16 OWL tires, Smittybilt nerf bars & Line-X bedliner.

NoMo's site

 

http://www.4wheelparts.com

They have a store in Dallas close to Reunion Arena and they do installs to. I plan on having mine done by them. Going to 3.73 from 3.08...



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1998 F150 STX 4.6L V8 Black w/Grey int. 6 disc CD-Changer, 5% tint, 2" drop shackles, CheckMate Flush Style bed cover, clear corners, APC Euro Clear Tails, SuperWhites, Infinity 5725cf all around, SS Speed Grille w/ bumper, Helwig rearsway bar,Superchip, Airaid, Mangecor KV8.5 wires, Bosch Plat +4, and Jardine Cat-Back single out.

Future Mods:
Pro-M, Throtle Body, Pulleys, Carbon Fiber, Headers, High Flow Cats, and Edlebrock shocks.