4:10s or 4:56 - JeepForum.com
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post #1 of 56 Old 03-12-2015, 12:17 PM Thread Starter
Towny72
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4:10s or 4:56

Going to upgrade the axles this spring. I plan to keep the 4.0 and the 5spd for the life of the jeep. I will be going to 33*12.50*15s for my tires. Medium trails is about the most I am going to hit, I am more of a slow and steady them a skinny peddle wheeler types.

So with that said what would get me back to more facotory 4:10 or 4:56.

The option of a 4cyl front axle is a good one but the savings vs performance I am going performance.


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post #2 of 56 Old 03-12-2015, 12:25 PM
Sungard
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I m having the same set up for nearly 3 years and its my DD, 4.56 will be little too much. I swap the axles from 4Cyl and cannot understand: "savings vs performance I am going performance"

'95 YJ, 4.0,(4:10)RE 2.5"+5/8 Booms,1"BL & 33"
'13 WK2 TrailHawk(V6)
'04 WJ,4.7HO,Overland,(SOLD)
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post #3 of 56 Old 03-12-2015, 12:27 PM
Anticanman
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Either one is fine. I have 4.10 and 35's and I can putt around town and zip on the freeway just fine. However if I ran my 36's all the time especially up the mountain highways, I would be at least running 4.56 if not 4.88

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post #4 of 56 Old 03-12-2015, 12:46 PM
Crunko
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4.10 is my vote if you wanted the most stock factory feel on that setup
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post #5 of 56 Old 03-12-2015, 01:06 PM Thread Starter
Towny72
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Thanks for the input guys.


What I was going by on the savings vs performance is. I know I can find a 4:10 axle from a 2cyl for less then the cost of have my current axle re-geared to 4:56 but if the 4:56 was a better option then I would rather spend the loot the save it

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post #6 of 56 Old 03-12-2015, 01:39 PM
mickcollinsb16b
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I like more gear personally. 4.56 get my vote. Not going to be a huge loss on max freeway speed. But I'm someone who drove a Toyota with 4.88's and 32" tires for 10 years. 60 tops on the freeway. Never got a speeding ticket though....

RoknRoll, beer & Jeeps
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post #7 of 56 Old 03-12-2015, 02:52 PM
skyj
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If you want performance then go with 4.56. That's what I run with a V8 .35's for the trail and 33's for the street.

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YJ 5.2 magnum MPI, AX15, NP231 SYE, Dana 30 4.56 open/ 8.8 4.56 detriot locker. 1" shackles
2" BL, 4" stretch all on saggy waggy springs.
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post #8 of 56 Old 03-12-2015, 03:11 PM
JohnnyZJ
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4.56s.

stock sucks.

its not an 'upgrade' if you get it back to factory specs.

that said, 4.10s and 33s was really decent. but then i wanted 35s. and a better rear axle. and then it starts..............

07' JKUR rollin on 35s
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post #9 of 56 Old 03-12-2015, 05:45 PM
jserna
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How about with a 4 speed non OD stick running 35s?
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post #10 of 56 Old 03-12-2015, 06:16 PM
skyj
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Quote:
Originally Posted by jserna View Post
How about with a 4 speed non OD stick running 35s?
What 4 speed??
Here you go link to all your gearing wonders.
http://www.grimmjeeper.com/gears.html

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YJ 5.2 magnum MPI, AX15, NP231 SYE, Dana 30 4.56 open/ 8.8 4.56 detriot locker. 1" shackles
2" BL, 4" stretch all on saggy waggy springs.
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post #11 of 56 Old 03-12-2015, 06:44 PM
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I've had 33s with a YJ on 3.07s... Same use as you but I'd never do it by choice. Then again I did it for 10 years and never felt a need to change the 3.07s.

And 33s in my TJR with 4.10s. Honestly I wish the Rubi had 3.73s. For my use and the use you describe I'd never go deeper than 4.10 with 33s and a clutch.

My YJ got over 20mpg all the time. My TJR struggles to ever hit 20mpg.

Why are you doing new axles?
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post #12 of 56 Old 03-12-2015, 11:53 PM
brandon789
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I run 35's with 4.10 gears and a np435 with no od. Gearing is perfect on the street any lower and I'd be running very high rpm on the highway. With that said I plan to go down to 5.13s when I can afford it to step up to a larger tire

1991 Wrangler Poverty Franken Build with some bootyfab and few jeep parts
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post #13 of 56 Old 03-13-2015, 06:46 AM
jserna
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I have the same tranny brandon789. That is what I was looking for, my YJ has 3.55s in it now and I want to re gear it.
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post #14 of 56 Old 03-13-2015, 08:59 AM Thread Starter
Towny72
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Well sounds like 4:10s will be my best option.

Again I plan to stick with a 4.0 I6 for my engine as long as I own the jeep as well as a standard 5sd tranny.

Would like to still be able to motor down the highway at 70mph at a normal RPM

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post #15 of 56 Old 03-13-2015, 11:49 AM
ghetdjc320
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x2 on 4.10's. Do a 4:1 kit in the 231 and it would be more capable on the trail without sacrificing streetabiity.

-DJC
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