Regearing and Locking Diffs

KingKJ said:

Does anyone know if any of the years past 07 would have 4.10 gears? I wouldn't think they changed the suspension that mich between the years

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duderz7 said:

Not what I was told when I called a few yards. I'll take your word for it since you were/are directly involved. Anyhow, nobody had any 4.10 anything on the site...yet, they did?

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u2slow said:

Some could be so backwoods on their operation they don't do immediate inventory on receipt of the vehicle.

Even if they do, there's also a possibility of unknown details/options. Gets lumped in under the usual 3.73 stock until the diff is physically checked over and inventory is updated.

Anyway, I see the Yukon 30HD 4.10 gearset is back on Amazon

https://a.co/d/78gPMOm

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KingKJ said:

this would be for front differential?
and then rear is easier to find?

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u2slow said:

Maybe, maybe not. A 4cyl Jeep XJ or 4cyl Dakota might have 4.10.

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duderz7 said:

Yes, and they could potentially have a dana 30, but the dana 30a is what is in a kj and no other gearset fits it. The pinion gear is shorter.

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u2slow said:

I was commenting on the rear only in post #24.

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