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Go Back JeepForum.com > General Technical Discussions > Engines & Drivetrain > What years / models of 4.10 axles will fit a YJ?

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Unread 11-10-2013, 05:57 PM   #1
Mambo_Dave
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1991 YJ Wrangler 
 
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What years / models of 4.10 axles will fit a YJ?

I'm just asking to know what to look for if I go scouring wrecking yards for something like 4-cylinder Wrangler axles that are already 4.10 gears.

This is the second or third 4x4 I've ever owned that came from the factory with way messed-up axle gearing (pretty sure this is 3.07), and I'm am bleeping tired of it.

Before I go doing anything I want to gear this Jeep correctly so I'm not prematurely wearing out the clutch when just trying to use first gear (31" tires).

So I'm asking you guys for the most direct bolt-in axles. Whatever I find will most likely have lower miles than my Jeep's axles have on them already, so that's a plus.

And thank you!

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Unread 11-10-2013, 06:23 PM   #2
bigfootdave
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1997 TJ Wrangler 
 
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Nothing is for certain, so you should always pull the cover and verify the axle ratio. That said, as far as finding 4.10 ratio axles, most if not all 2.5 four cyl motor equipped Wranglers came with that ratio. I'm pretty sure all, but one never knows!
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Unread 11-10-2013, 06:40 PM   #3
Mean Max
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ALL 4 cylinder YJs with manual shift came with 4.10 gears.

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No one here knows what they are talking about. You should try Pirate 4x4 they will be happy to help you.

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Unread 11-10-2013, 08:31 PM   #4
apaTJ
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You can also check your gear ratio by lifting the front or rear and spinning the driveshaft. The number of driveshaft rotations to tire rotations is your gear ratio. It's not very exact but you should be able to tell if it's 3.07 or 4.10. Although unless someone changed it all 4 cyl models should have 4.10s
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Unread 11-11-2013, 06:36 AM   #5
Mambo_Dave
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Thanks guys, but... Yeah, I've got that part down - manual 4 cylinders have 4.10's.

My question is more about axle fit - for example, mine is a 1991 with leaf springs front and rear. Would axles from a 4 cylinder 2005 easily fit?

That's more along the lines I'm thinking (instead of identifying 4.10's). I figured Jeep guys would know.
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Unread 11-11-2013, 11:27 AM   #6
Mean Max
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There is no bolt-in swap available. Only YJ to YJ, '87-'95

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Quote:
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Quote:
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No one here knows what they are talking about. You should try Pirate 4x4 they will be happy to help you.

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Unread 11-11-2013, 04:46 PM   #7
Mambo_Dave
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Thanks Max.
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