gearing in a 87 mj? - JeepForum.com
 
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post #1 of 7 Old 08-09-2012, 09:03 PM Thread Starter
aaron808huber
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gearing in a 87 mj?

i have an 88 mj with dana 44 and 3.07s sitting on 33's.
i obviously need to upgrade. i found a 87 with a d44/d30 with a 2.8 in it. he's asking 450 for both axles. the guy doesn't know the ratio and wont look for me. i'm not really wanting to drive an hour and a half to find another set of 3.07's. i cant find anything online about the 2.8 specs only the 2.5 and 4.0. does anyone know what gear ratios these had in them?

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post #2 of 7 Old 08-09-2012, 11:03 PM
Pete M
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that's because the 2.8 wasn't offered in 87. based on that mistake, there's no way to know the ratio for certain without either popping open the cover and checking the stamping on the ring gear, or spinning the drums around and counting the times the yoke spins.

-88 MJ; 4.0L, ex-2wd, TJ ax15/231, 78 Ford D44 w/spool, 9" w/posi, 33" trXus MTs, custom roll-bar/bumpers/etc.
Also an 86 MJ Metric ton and 2 '90 MJs
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post #3 of 7 Old 08-21-2012, 08:59 PM
josh94xj
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I need 3.07 rear end for my Xj..
Got 8.25 with 3.55,
Sent from my 2 door Cherokee!

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post #4 of 7 Old 08-22-2012, 06:23 AM
cruiser54
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Quote:
Originally Posted by josh94xj View Post
I need 3.07 rear end for my Xj..
Got 8.25 with 3.55,
Sent from my 2 door Cherokee!
Obviously your smart phone doesn't show that he's in Hawaii.
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post #5 of 7 Old 08-22-2012, 06:23 AM
cruiser54
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Quote:
Originally Posted by Pete M View Post
that's because the 2.8 wasn't offered in 87. based on that mistake, there's no way to know the ratio for certain without either popping open the cover and checking the stamping on the ring gear, or spinning the drums around and counting the times the yoke spins.
And Pete, I can't remember but there wasn't a 2.8 with a Dana 44 behind it?
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post #6 of 7 Old 08-24-2012, 05:23 AM
automan2164
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Originally Posted by cruiser54 View Post
And Pete, I can't remember but there wasn't a 2.8 with a Dana 44 behind it?
Unless sawpped, D44's didn't show up behind 2.8's. M20's however, did.

Rob

'86 MJ 2.1L 4x4 MT LWB - Factory Diesel
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post #7 of 7 Old 08-24-2012, 05:27 AM
cruiser54
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Quote:
Originally Posted by automan2164 View Post
Unless sawpped, D44's didn't show up behind 2.8's. M20's however, did.

Rob
That's tickling the cobwebs in my memory banks. Makes sense.
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