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Old 03-04-2007, 05:58 PM   #1
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37" tires on stock axles?

I want 37" boggers. I dont want to get new axles. What gear ratio is good and what axle upgrade do i have to get so these dont break?

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Old 03-04-2007, 05:59 PM   #2
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dana 44s front and rear with cromo shafts

your dana 30 wont hold up your dana 35 will not hold up. if you have a rear dana 44 i would put the super 44 kit in. boggers are extremely hard on axles.

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Old 03-04-2007, 06:13 PM   #3
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what about a super 30 kit, 35 kit and put some ox lockers in? What should i gear it at, 4:56?
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Old 03-04-2007, 06:49 PM   #4
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that should be ok, but if your hard on the throttle at all, you'll bust that 35 even with an axle kit... D44's should be on the TO-DO list if your thinking of 37's though.
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Old 03-04-2007, 06:51 PM   #5
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Lock a 30 or 35 with 37's and you are pretty much guaranteed to break em - super or not.

There is not an upgrade that will make a 30/35 combo reliable on 37's. Lockers make it even worse.

A locked 44 with chromoly shafts can BARELY handle 37's.
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Old 03-04-2007, 06:58 PM   #6
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Lock a 30 or 35 with 37's and you are pretty much guaranteed to break em - super or not.

There is not an upgrade that will make a 30/35 combo reliable on 37's. Lockers make it even worse.

A locked 44 with chromoly shafts can BARELY handle 37's.
Just for reference, I would like to see video of how you wheel to verify your statement. Are you kidding? 44s and chromos will last on 37s if you are legit and smart about your wheelin. I am very fond of telling people go nice or go twice but I think, depending on which 37s you go with, that a 44 is more than enough axle to stand up to 37s.
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Old 03-04-2007, 08:24 PM   #7
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Im going with boggers, i dont do real hard wheeling, just mud but i do want to get locked up soon. So i can get just beef up my axles first then get the tires with proper gearing then the lockers correct?
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Old 03-04-2007, 08:54 PM   #8
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Just for reference, I would like to see video of how you wheel to verify your statement. Are you kidding? 44s and chromos will last on 37s if you are legit and smart about your wheelin. I am very fond of telling people go nice or go twice but I think, depending on which 37s you go with, that a 44 is more than enough axle to stand up to 37s.
I think you are misconstruing my statement. I don't disagree that alloyed 44's are "enough" for 37's if you wheel smart. Otherwise I wouldn't run them. My 37's and alloys are recent additions. I'm 30 spline in the front and I am light on the skinny pedal so I don't forsee any problems in the terrain I run.

Does that make a Cr 44 "more than enough"? For everyone? Not in my opinion as I know of failures (second hand) that were not in the most extreme of circumstances. It is nice however, that some manufacturers' alloy shafts have great warrantys.

Also take into consideration that not all Cr axles, u-joints or carriers are created equally and sometimes "accidents happen" even to experienced wheelers.
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Old 03-04-2007, 11:35 PM   #9
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There is nothing on earth that can save a locked D35 with any 37" tire on it. You'd probably break it just turning a corner too fast.
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Old 03-05-2007, 04:57 PM   #10
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What if i dont get a super kit no lockers no beefing up axle, just the 37"s on my d30 and d35?
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Old 03-05-2007, 05:06 PM   #11
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What if i dont get a super kit no lockers no beefing up axle, just the 37"s on my d30 and d35?

To answer this question....

I'm going to revise what Jack said.

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There is nothing on earth that can save a locked D35 with any 37" tire on it. You'd probably break it just turning a corner too fast.


There is nothing that can save a DANA 35 from the wrath of a 37" tire.

A D35 is not an option.
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Old 03-05-2007, 05:21 PM   #12
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Talking if you want a head ache

YOU WILL BUST YOUR AXELS IF YOU DO NOT CHANGE OVER TO DANNA 44'S, But if you want to be broken in the woods go ahead I wont pull you out for stupidity
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Old 03-05-2007, 05:28 PM   #13
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Then i need to get some 44's where do i start looking? how much will a set cost? What are all the components i need to change over in an axle swap?
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Old 03-05-2007, 05:40 PM   #14
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Then i need to get some 44's where do i start looking? how much will a set cost? What are all the components i need to change over in an axle swap?
Your Dana 30 can survive 37" tires. However you'd be better off if you at least put some alloy shafts in it and better u-joints. If you really want to keep the D30 and put extra beef to it then a Super 30 kit with 30 spline chromoly shafts in it would be the way to go.

So with that said if you are really wanting 37's then you either need to look into a TJ Dana44 swap in (Completely Bolt In) or a Ford 8.8 swap (Fab work required unless you spend a decent amount of $). It's funny Joe and I were just talking about this today and I had mentioned this thread. These days you can find a stock D44 bolt in for around 1200-1500.

And on a side note: Mr. Clifford was dead right in modifying my previous statement. No matter what you do to a D35 37's will shred it.
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Old 03-05-2007, 05:54 PM   #15
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Please excuse my ignorance....So keep the 30 in the front and get a super 30 kit, (what exactly does this contain? a locker?) and beef it up, How would this be done, extra brackets?, welding? Also get the 30 spline chromoly shafts, i would assume there is a kit for this. Then swap the 35 out for a tj 44. What about a used wagoneer 44? what exaclty is a "bolt in", does the backspacing change for an axle?
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Old 03-05-2007, 07:43 PM   #16
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Then swap the 35 out for a tj 44. What about a used wagoneer 44? what exaclty is a "bolt in", does the backspacing change for an axle?
A Wagoneer 44 would need fab work as it used leaf springs instead of coils like a TJ... it can be done, but you'd need the TJ mounts for springs and control arms welded on to it.

A "Bolt In" D44 from another TJ is exactly that... unbolt everything and drop kick your D35 to the curb and bolt the D44 into place. They are a perfect fit and don't require any welding.

The back spacing won't change if you get a D44 from a TJ, but if you get one from a Wagoneer, it would because the Wagoneer has "Full Width" axles wich are much wider than those of the TJ.
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Old 03-05-2007, 07:53 PM   #17
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A Wagoneer 44 would need fab work as it used leaf springs instead of coils like a TJ... it can be done, but you'd need the TJ mounts for springs and control arms welded on to it.

A "Bolt In" D44 from another TJ is exactly that... unbolt everything and drop kick your D35 to the curb and bolt the D44 into place. They are a perfect fit and don't require any welding.

The back spacing won't change if you get a D44 from a TJ, but if you get one from a Wagoneer, it would because the Wagoneer has "Full Width" axles wich are much wider than those of the TJ.
he has a yj
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Old 03-05-2007, 07:54 PM   #18
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So keep the 30 in the front and get a super 30 kit, (what exactly does this contain? a locker?) and beef it up, How would this be done, extra brackets?, welding?
Yep - the D30 is quite a bit stronger than the D35, plus it helps that its up front and doesn't take all the abuse the rear axles would.

A D30 Super Kit usualy contains a locker of your choice(depending on whom you buy it from), new axle shafts(chomoly), new U-joints installed in axles, wheel bearings and seals. That would be all that is needed to "beef it up".

And the only other thing to consider when going with 37's are new gears for those axles
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Old 03-05-2007, 07:55 PM   #19
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he has a yj
..... Didn't realize that :o :o :o :o :o


So yeah... a Wagoneer D44 would work, but its wider
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Old 03-05-2007, 07:56 PM   #20
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with the d30/d35 axles i wouldn´t install more than 35s. with HD offroad use 33s will kill the axles.


EDIT:
if you install some 37s on your stock axles i have a deja-vu for you. many broken axles:
http://www.billhughes.com/dana35c/
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Old 03-05-2007, 08:19 PM   #21
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And the only other thing to consider when going with 37's are new gears for those axles
Sorry about the mix up i guess my avatar sort of does look like a TJ..Any way What is a good gear ratio for 37's?. Who sells a super 30 kit with an ox locker? And since this conv is going to cost so much $$$$$, how hard is this all to install myself???
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Old 03-05-2007, 08:21 PM   #22
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what about an 8.8 from a ranger or exploder, would that bolt in?
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Old 03-05-2007, 08:23 PM   #23
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Sorry about the mix up i guess my avatar sort of does look like a TJ..Any way What is a good gear ratio for 37's?. Who sells a super 30 kit with an ox locker? And since this conv is going to cost so much $$$$$, how hard is this all to install myself???
how bout 5.13's?
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Old 03-05-2007, 08:25 PM   #24
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Damn man, I'm sorry. Completely didn't realize that we were talking YJ here.

Lost has a great idea for you on the 8.8, I don't quite remember the measurements on leaf mounts, but at the very most all you'd have to do is cut off the spring perches and shock mounts and add new ones.
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Old 03-05-2007, 08:27 PM   #25
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I donno who would offer an OX Locker with that kit, but you should do some searching between vendors... I'm sure some of them would give you the option of an ARB or Detroit or OX, just have to find the place that will do it...

And for gears, prolly 4.88's or 5.13's.....

Ford 8.8 into a YJ - http://www.jedi.com/obiwan/jeep/ford88.html
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Old 03-05-2007, 08:38 PM   #26
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Im running an SOA with rubicon express antiwrap perches i can have them grinded off and put on a ford 8.8. Whats the advantage for an 8.8, can i find one of these cheaper, if i do it, has to have the same gears as my front axle to go into 4x4 correct???As for my front axle i can just get a super 30 kit for the time being without a locker then later get a locker kit set up for both axles right?
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Old 03-05-2007, 08:49 PM   #27
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The 8.8 has a larger ring gear than the 44, 31 spline axle shafts to the 44's 30 spline. Larger diameter axle shafts, thicker axle tubes. It's as good and better than the 44 in most area's. It would be very easy to setup for SOA as your D35 is. Spring perches and shock mounts.

Don't know what gearing you have now, but 8.8's come with either 4.10 or 3.73.
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Old 03-05-2007, 08:51 PM   #28
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Pretty much... yeah you can usually find an 8.8 cheaper. yes you can get the super30 and then do it to the 8.8.... superior axles makes a Super8.8 kit as well.
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Old 03-05-2007, 08:57 PM   #29
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well what is the stock gear ratio for my YJ i want to get an 8.8 with the same gear ratio for the time being before i get the 37"s, But if this turns out to be not possible if i do install the 8.8 with different ratio than in the front, i can still drive my jeep but just not in 4WD correct?
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Old 03-05-2007, 09:01 PM   #30
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Hell bro, I have no idea what your gear ratio is. If you have the 4.2 6 cylinder you could have 3.07, 3.54 or 3.73. If you have the 4 cylinder then odds are it's 4.10.

Yes, if your gear ratio's don't match you can still drive it, but you will need to remove your front driveshaft.

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