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quick gear question

Old Nov 18, 2011 | 03:56 PM
  #1  
Oxen__'s Avatar
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From: Burington Washington
Year: 1989
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Engine: 4L Renix
Default quick gear question

lookng to put 35's on my xj

i have a 5speed and 307 gears right now. i know the 307 will not cut the mustard. would 410's be decent for a slow rolling speed in the snow? or do i need to go even lower on the gear ratio 456? other possible option is i use my 410 axles and go to a lower tcase low gear if thats a option in these units
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Old Nov 18, 2011 | 05:25 PM
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4.10 gears will be great with the manual trans
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Old Nov 18, 2011 | 05:51 PM
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If you have the 4.10s already then you will be fine. If you dont then I would with 4.56s.
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Old Nov 18, 2011 | 07:25 PM
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Originally Posted by XJ Mulisha
If you have the 4.10s already then you will be fine. If you dont then I would with 4.56s.

if i still ned to go lower i could afford 456 gears this summer.

i plan to be runnign a toyota disel come spring and i am going to replace the t-case low range gears to 4.70:1 for my low range. if the 4.0 & drive train will get me by for this winter super. i can toss all the old stuff at the dump after the swap.
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Old Nov 18, 2011 | 10:09 PM
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its better if u go 4.56 with 35s and a manual tranny, it would be like 4.88 with an automatic, which is better if ur running 35s
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Old Nov 18, 2011 | 10:19 PM
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Originally Posted by Jeepjunky
its better if u go 4.56 with 35s and a manual tranny, it would be like 4.88 with an automatic, which is better if ur running 35s
even with an extremely low , low range t-case gear? thats a bout a 50% reduction from 2.xx:1 to 4.70:1? i'd be able to walk next to it.
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Old Nov 18, 2011 | 10:21 PM
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whats wrong with that? lol
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Old Nov 18, 2011 | 10:30 PM
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Originally Posted by Jeepjunky
whats wrong with that? lol
nothing lol. i was just wondering how much slower i should make it lol.
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Old Nov 18, 2011 | 10:31 PM
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just to were u have to rev it to bout 6K RPM to go 3MPH lol
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Old Nov 18, 2011 | 11:03 PM
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Originally Posted by Jeepjunky
just to were u have to rev it to bout 6K RPM to go 3MPH lol

i think that may just be a tad over kill , but i like over kill

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Old Nov 18, 2011 | 11:17 PM
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I would set the diffs up to be close to stock for 2H + 4H situations, and then have a 4.7-1 T/case for crawling. Most Toyota guys i run with have 35's with 5.29's and a dual transfer case with 2.8-1 in the first box and 4.7-1 in the back box. they literally crawl over almost anything.

But they have the 22re. the diesel is a different beast. lower rpm is needed, I would run 4.56's as that should put it in the diesels ideal operating rpm...
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Old Nov 19, 2011 | 12:55 AM
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www.grimmjeeper.com
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