Diesel gladiator with 4.10 gears and 4/1 transfer case?

[Phil3333]

I thought the rubicon diesel didn't have them?

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[TheSolarWizard]

The rubicon diesel has 3.73 axle gearing

 

[Phil3333]

The rubicon diesel has 3.73 axle gearing

 

[TheSolarWizard]

Yep see bottom right of that sticker

 

[Phil3333]

Ya I'm stupid. How do I find the invoice price on this jeep

 

[CerOf]

Ya I'm stupid. How do I find the invoice price on this jeep

Ask the dealer to show you.

Tell the dealer you’ll buy at x% below invoice. When you agree, they should show you the invoice. Invoice price, it seems, is about 10% less than sticker.

 

[MoxiesDad]

Ya I'm stupid. How do I find the invoice price on this jeep

Check the thread on JT monthly pricing sheets in the ordering section. It will list FWP (invoice price) and MSRP for the model and also all options. BTW invoice price is not 10% below MSRP.

 

[dcmdon]

Look at it this way. The diesel has a 4500 RPM(ish) redline. The gas 6 is somewhere around 6500.

So putting 4.11 gears would have the diesel turning too fast at highway speeds. I'm not saying it couldn't be done. But
1)its not necessary with all the low end torque, to multiply it so much.
2) streetability would suffer with reduced fuel economy and increased noise.

 

[Phil3333]

Look at it this way. The diesel has a 4500 RPM(ish) redline. The gas 6 is somewhere around 6500.

So putting 4.11 gears would have the diesel turning too fast at highway speeds. I'm not saying it couldn't be done. But
1)its not necessary with all the low end torque, to multiply it so much.
2) streetability would suffer with reduced fuel economy and increased noise.

Depends on tire size 4.10 with 40s might be the ticket

 

[CerOf]

Look at it this way. The diesel has a 4500 RPM(ish) redline. The gas 6 is somewhere around 6500.

So putting 4.11 gears would have the diesel turning too fast at highway speeds. I'm not saying it couldn't be done. But
1)its not necessary with all the low end torque, to multiply it so much.
2) streetability would suffer with reduced fuel economy and increased noise.

It’s a 10% difference.

So if I’m at 1800rpm at regular highway speeds with 3.73. This would put me at 1980. Not a huge difference.

Now, run a 35” tire and you are 6% over a stock 33” tire. The net rpm increase would only be ~4%. (10% difference going from 3.73 to 4.10 less the 6% increase of tire size)

The extra rolling resistance, wind resistance and weight of the larger tire would make 4.10 gears pretty darn comparable to stock.

 

[CerOf]

Depends on tire size 4.10 with 40s might be the ticket

I believe it would become boring.

the added weight + size would need more gear. I think 4.10 would be spot on for a daily driver on 37s.

If I’m on 40s, I’m certain to have a 3”+ lift, added wind resistance, and all that comes with it, I’d probably want 4.56.

 

[dcmdon]

It’s a 10% difference.

So if I’m at 1800rpm at regular highway speeds with 3.73. This would put me at 1980. Not a huge difference.

Now, run a 35” tire and you are 6% over a stock 33” tire. The net rpm increase would only be ~4%. (10% difference going from 3.73 to 4.10 less the 6% increase of tire size)

The extra rolling resistance, wind resistance and weight of the larger tire would make 4.10 gears pretty darn comparable to stock.

Except we aren't talking about add ons. We are talking about stock to stock.

A diesel with 373s is appropriate for stock ish sized wheels and will give more torque at the wheels than a gas engine with 4.11s.

I'm not saying if you put 37s on your jeep that 373s are ideal. Just like I wouldn't say that 4.11s with a gas engine and 37s wouldn't be ideal.

Jeep gears the truck to optimize it based on the wheels and tires that come on it. Not based on the idea that someone might put larger tires on it.

 

[CerOf]

Except we aren't talking about add ons. We are talking about stock to stock.

A diesel with 373s is appropriate for stock ish sized wheels and will give more torque at the wheels than a gas engine with 4.11s.

I'm not saying if you put 37s on your jeep that 373s are ideal. Just like I wouldn't say that 4.11s with a gas engine and 37s wouldn't be ideal.

Jeep gears the truck to optimize it based on the wheels and tires that come on it. Not based on the idea that someone might put larger tires on it.

Totally agree! Gas engine can’t put down the same torque. 3.73 in diesel vs 4.10 in gasser.

Torque	1st Gear	T-Case	Axle Ratio	Total
260	4.71	4	4.1	20,083.4
442	4.71	4	3.73	31,060.75

Even if you get the gasser up to 300 torque with a super charger, or for fun, lets say 350, you're still at 27,035.4 to the ground.

For all out grunt, can't beat the diesel in the gladiator.

 

[dcmdon]

Ha. I thought about doing the math but was lazy. Thanks. Its more of a disparity than I though it would be.

 

[rharr]

So is it true the JTRD comes with a 4:1 transfer case? My build sticker says it has it. Dealer was telling me it's the 2.73 trans case.....

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