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5 series gears and 33's.

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Old Oct 10, 2008 | 11:45 AM
  #1  
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From: Texas
5 series gears and 33's.

Are any of you running 5.29's or 5.71's and 33" tires?

I ask becuase I'm thinking that after my lift I might go with 33's and a re-gear. I know 4.88's are the 33" standard but I'd like to go a little deeper into the crawl department.

Of course this means that my 5 ,less than 2000 miles on them, Treadwrights and 4.56 thirds will be up for sale, if it works that is.
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Old Oct 10, 2008 | 11:50 AM
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From: maple ridge, British Columbia, Canada
5.71 would be WAY to high.. 5.29's would work pretty well, HWY crusing would suffer but it sure would be peppy around town

I would also consider doing a dual t-case setup.. It would be better in the long run.
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Old Oct 10, 2008 | 11:51 AM
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I didn't know BMW gears fit our trucks.
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Old Oct 10, 2008 | 12:01 PM
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From: maple ridge, British Columbia, Canada
Originally Posted by Matt16
I didn't know BMW gears fit our trucks.
Explain...
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Old Oct 10, 2008 | 12:27 PM
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Originally Posted by Jay351
Explain...
BMW classifies their cars by series. 1, 3, 5, 7 series cars. Higher the number the nicer it is. A 325 is a 3 series, with a 2.5 liter engine.
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Old Oct 10, 2008 | 12:28 PM
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5.29's sounds good to me
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Old Oct 10, 2008 | 01:43 PM
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I have 5:29s and 33s now I went to them so I can swap between 33s and 35s.
If you have an auto its fine, the OD helps out and plenty of pull! Even if I had a 5spd Id go 5:29 based on I know i wonr run anything smaller than a 33 and bigger is always an option.
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Old Oct 10, 2008 | 01:48 PM
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I'd never run anything under 35s with 5.29s. You do realize with 33s your top speed is going to be around 50-55 right? I've got 35's and I still run out of engine around 60-65mph.

http://www.grimmjeeper.com/gears.html input all your numbers and play with it there.
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Old Oct 10, 2008 | 02:54 PM
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Originally Posted by SwampThing
You do realize with 33s your top speed is going to be around 50-55 right? .

Yeah that's an issue but I want to be able to crawl a little better and not get too big. The last time I went out I was taunted for hours because I couldn't make it up a simple 6 foot shelf with my 31's. I really believe that if the spotter hadn't had a bias towards Toyota's he would have helped me pick a better line. My only other option (besides SAS which I can't afford) is dual t-cases but that involves drivelines, braces, armour etc.....

Just trying to eliminate reasons for the Rubicon Jeep owners to laugh at my expense.
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Old Oct 10, 2008 | 03:19 PM
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Bah, you aint need duals just yet. Plop in some 4.7 crawl gears in your tranny. Aint hard at all, no real special tools needed other than some snap ring pliers.

Going from 4.88s to 5.29's with 33s is only 11fpm (foot per minute) change. Basically with 4.88s it'll crawl 148fpm @ 750rpm (43.73:1 fgr-lo), and with 5.29s it'll crawl 137fpm @ 750rpm (47.40:1 fgr-lo).

You'd get much better results sticking with 4.88s and 33s with those low 4.7:1 lo-range gears for your tranny. Then you'll crawl 72fpm @ 750rpm (90.14 fgr-lo).

And you do know that smaller tires makes for slower crawl speeds right?
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Old Oct 10, 2008 | 03:21 PM
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Btw those numbers were calc'ed with g52 tranny numbers, since that's what I got lol...
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Old Oct 10, 2008 | 03:44 PM
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From: Texas
Originally Posted by SwampThing
You'd get much better results sticking with 4.88s and 33s with those low 4.7:1 lo-range gears for your tranny. Then you'll crawl 72fpm @ 750rpm (90.14 fgr-lo).

With those kinds of numbers in your head we have got to meet and do some drinking........ don't worry I won't tell anyone about how I drank your @ss under the truck......
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Old Oct 10, 2008 | 03:57 PM
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Goooooood luck. You've been outta Texas too long, and have forgotten how to drink my friend.
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Old Oct 10, 2008 | 04:52 PM
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Originally Posted by SwampThing
And you do know that smaller tires makes for slower crawl speeds right?
This episode of "Crawling with SwampThing" has been brought to you by the letters S and M and what every tire is made of- rubber.
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Old Oct 10, 2008 | 04:59 PM
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Paid for by viewers like you.
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Old Oct 10, 2008 | 05:06 PM
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From: Grew up in S.C.V, So Cal.....now in Hampstead, NC
I want my penny back!!!
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Old Oct 10, 2008 | 05:08 PM
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The number you are trying to reach, has been disconnected. Message Number FU-101

Haha pwned. Got yo penny and ran!
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Old Oct 10, 2008 | 05:09 PM
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From: Grew up in S.C.V, So Cal.....now in Hampstead, NC
thats what he thinks! Ya can't buy jack with a canuck penny.....suckafish!!!!!

pwned
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Old Oct 10, 2008 | 05:11 PM
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Bah. I can make a collect call to mexico. 10-10-321 biatch
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Old Oct 10, 2008 | 05:15 PM
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From: Grew up in S.C.V, So Cal.....now in Hampstead, NC
ya got a point there. But we call, when you can just walk over?!!? I bet they are some nice neighbors......
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