What if I stuck this in my 01 1500?

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Jimmy68

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Dana 110 rear axle from a 2008 dodge 5500 has 4.88 gears with a Detroit true track limited slip.
$400 asking price. :roflsquared: Be AWESOME.
Edit: Front diff comes with but it is bent.
 
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Jimmy68

Jimmy68

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4:88 rear gears and 42" tires with a 60 front with 4:10 gears and 35" tires. Be crazy man.
 

Marksman

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Are they the same width as what you have?
 

dapepper9

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Wouldn't bother trying to mix tire/gear combos on the same truck. That's how you lock one of your axles up.
 

dudeman2009

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As Dappeper said, you will destroy your transfer case if you ever try to put it in 4wd with that custom setup. All part time 4wd systems in existence require the front driveshaft and rear drive shaft to lock together and spin at the same speed. Meaning your carriers in both diffs need to spin at the same speed. Two different sized tires or two different gearings will prevent that and cause the same result as putting it in 4wd and doing tight circles in a dry parking lot.

Only AWD or full time 4WD systems can do what you're trying to do, even then that will cause premature failure of certain parts.
 
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Jimmy68

Jimmy68

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LMAO.
Ya ya ya. Gears etc must match.
This is true.
No. I'm not sticking a big ass dually diff in my 1500.

But also in reality. 42" tire with 4:88 gears = 2538 RPM and 35" with 4:09 = 2552 RPM. Unless your driving on dry asphalt your not going to wig out anything.
You do need to be certain your tires are the actual size stated as not all tires are equal.
Some 35's are 33 and some are 34 etc.
Plus when your in the mud off road you want your front pulling more for better control.

Example: 4:09 front and 4:11 rear in a stock truck.
Same enough. Now burn off your rear tires screwing around for your buddies. Your bald 33's are now 32's. 2805 RPM. Your new 33's with 4:09 2707 RPM.

So me with 35's and 4:09 and 42's with 4:88's my RPMs are 14 apart but yours are a 100 apart. If you run 33's all around the 4:11 will still be 2720 RPM which is 13 RPM difference. Not so much less than my 14 RPM.
 
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Csanders1992

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Lots of mud trucks will run different gears front and rear. But these are usually mud only trucks


Sent from my iPhone using Tapatalk
 
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Jimmy68

Jimmy68

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Lots of mud trucks will run different gears front and rear. But these are usually mud only trucks


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Especially if theyre running same tires front and rear. Helps keep the front up and digging rather than sinking.
 

Yeret

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While it is true that the wheels would rotate at the same speed, you have to remember that that is the OUTPUT speed. The input speed is at the differentials are going to be quite different.

The driveshaft at the 4.88 rear axle is going to spin faster than the driveshaft at the 4.1 front axle PERIOD. However, the rotational speed of the wheels can be equalized by using larger diameter wheels on the short ratio axle.

How does this equate to drivetrain wear and tear? I dunno, LOL. What I do know is the factory setup has something like a 3.92 ratio axle in the front whereas the rear axle is 3.55 and you definitely don't want to drive high speeds while the front axle is engaged. I've read a few stories of guys blowing up their transfer cases because of driving highway speed with the 4x4 engaged.
 

dudeman2009

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LMAO.
Ya ya ya. Gears etc must match.
This is true.
No. I'm not sticking a big ass dually diff in my 1500.

But also in reality. 42" tire with 4:88 gears = 2538 RPM and 35" with 4:09 = 2552 RPM. Unless your driving on dry asphalt your not going to wig out anything.
You do need to be certain your tires are the actual size stated as not all tires are equal.
Some 35's are 33 and some are 34 etc.
Plus when your in the mud off road you want your front pulling more for better control.

Example: 4:09 front and 4:11 rear in a stock truck.
Same enough. Now burn off your rear tires screwing around for your buddies. Your bald 33's are now 32's. 2805 RPM. Your new 33's with 4:09 2707 RPM.

So me with 35's and 4:09 and 42's with 4:88's my RPMs are 14 apart but yours are a 100 apart. If you run 33's all around the 4:11 will still be 2720 RPM which is 13 RPM difference. Not so much less than my 14 RPM.

I don't really disagree with anything you say. However, you would never see me burning up tires that I plan on driving daily with. I'd go buy some cheap junkyard rims and the most bald tires I can get at a tire shop. I do remember those mud trucks with vastly different sized tires, however they are oranges to our street truck apples. I thought it went without saying that mudding, topsoil driving, or complete and thick snow cover driving where the wheels can slip all the time would be fine for such a setup. I was talking about winter driving where there are patches of dry or salted pavement where tire slippage on decent tires is difficult. Sure when they are matched to what you presented with different front a rear tire sizes it would be like stock 4wd. As you pointed out, just because the tire says its a 35, doesn't mean it is, so you have to measure yourself, sure not a problem. Then you have to keep measuring them as their life is used up to make sure they don't deviate too much, as different sized tires will wear in different rates, it doesn't even have to be drastic, 2 years and your tires are just as bad as the burnout example you made.

However you did prove that you are aware of the issues. Since you are, i'd say its perfectly fine for you to do something like this (I know you said you wouldnt) as you would pay attention to the details. At first I had no idea if you knew what you do.
 
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Jimmy68

Jimmy68

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Ya. I've been mudding and modding 4x4's for near 40 years.
T-case output is equal and with correct tire sizing for different gear ratios that will stay constant. You may think it makes no difference but it does.
I just thought it would be funny to toss that big diff in my truck. That is all.

This is my 79 Ramcharger. The last mudder I built. Thats my 42 Dodge beside it for size comparison.
 

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