G56 with 4:10???

[kah68]

I ordered my truck in January with a 6 speed and 4:10 L/S , has anyone odered a truck like this, and if so did it show up with a G-56 or NV 5600 ? Or did you order a 4:10 only to recieve 3:73 and the G-56. No sign of my truck yet so I am wondering if anyone else is in the same boat. Oh BTW please don't adivse me to find a 5600 on the lot, I ordered a reg cab dually. Hard to find reg cabs with the options i want.



Thanks



Kirk

 

[dhill]

The G-56 with the 3. 73 is gear like the NV5600 with 4. 11. Actually the top speed is about 2 mph higher with the G-56. I don't think anyone has a 4. 11 in a G-56, I don't think they are an option. You said you ordered that way, but I's bet that it comes with 3. 73.



Dave

 

[smenard]

When I ordered my truck in Feburary with the G56 (option code DEG) I tried to get it with 4:10 gears but was not able to do it. If you ordered the 6 speed HD manual (I don't know what the option code is and it was no longer available when I ordered) then you will get the NV5600 which the 4:10 gears are avaiable for. I am not sure if the NV5600 was still available in January for order. My guess is that if you were able to order the 4:10 gears you also ordered the NV5600.



Seth

 

[Tim]

You can't even order a G-56 truck with 4. 10s. If your dealer told you they did, they're wrong.



4. 10s are not desirable nor beneficial to nearly anyone with a truck with an I6 Diesel. Even if I was going to pull a trailer with 37" tires, I'd still keep my 3. 73s.



With 3. 73s I have pulled 9,000 lbs up mountain passes in overdrive with the cruise locked at 75... there is no need for lower gears.

 

[macdaddy]

Your right!!!!!!!!!

You can't even order a G-56 truck with 4. 10s. If your dealer told you they did, they're wrong.



4. 10s are not desirable nor beneficial to nearly anyone with a truck with an I6 Diesel. Even if I was going to pull a trailer with 37" tires, I'd still keep my 3. 73s.



With 3. 73s I have pulled 9,000 lbs up mountain passes in overdrive with the cruise locked at 75... there is no need for lower gears. [/QUOTE



Tim



Your right 3:73's are all you need when you have a "WHIMPY" load like 9K. With a SRW and a short bed.



Mac

 

[JHardwick]

4. 10s are not desirable nor beneficial to nearly anyone with a truck with an I6 Diesel. Even if I was going to pull a trailer with 37" tires, I'd still keep my 3. 73s.

Speak for yourself

 

[dhill]

I'll see if this works. The G-56 with 3. 73 and the NV5600 have a final drive ratio that are the same. I'll try to attach copies of the spread sheet with the gearing. If it doesn't work then go to klenger's home page and look for your self



http://www.klenger.net/dodge/index.html



Near the bottom there is a link to gear/speed calculator.



Dave

 

[LDobie]

Good spreadsheet, isn't it so obvious that they need to offer 3. 43's or something as an option with the G56?? From other discussions they were saying that the sweet spot for efficiency is around 2000-2100 rpms, well thats at 65mph. Great for toting a big load in O/D, but who drives only 65 empty?? In many interstates, you'd get run over lugging along like that :-laf From my spreadsheet, with 3. 43's, that magic RPM band would be at 69-73mph, sounds perfect to me...

 

[RJOL]

I had a 2001 with a NV4500 five speed and 4:10 gears. When I ordered my 2005, I was expecting a better setup with the 3:73 gears. After the info came out about the G-56 I was a little disappointed. Essentially, you have a 4:10 setup with the 3:73 because of the new gearing (take a look at the chart above, at different rpms and you will see what I mean). If they ever offer a 3:54 that would be a better setup for most of us that use our trucks for everyday driving and the occasional heavy tow.



That being said, I've been pretty happy with my 2005, to this point. The mileage is about 1-2 mpg lower then my 2001, but I have more horsepower and torque (you don't get something for nothing) in my 2005. I get about 11mpg towing, and just over 16mpg cruising, empty (3K on the clock).



As others have said, you can't order the G-56 with a 4:10, and I don't think you would want it that way. With an auto, it's another story, but with the 6 speed, the 3:73 is the best match until they come out with a 3:54 option.

 

[kah68]

I want 4:10's as the truck tows 100% of its life in winding hilly terrain ( see pic in readers rigs ) with some highway running. The 3:54's in my 01' are just too high for my particular needs. I hope the 4:10's come with a 5600 but being this late in the game I wouldn't be surprised if it showed up with a G-56 and 3:73. Oh BTW 4:10's were an option when the truck was ordered.

 

[Tim]

Speak for yourself

I'm turning the same RPMs as you at cruise, with 3. 73s, even though you have 4. 10s. I stand behind my statement.



I have driven an NV 5600 truck with 4. 10s. I hated it, too...



More gears, YES!! Lower gears, NO!

 

[kah68]

I don't remember asking for any ones personal preferance for gear ratios, I'm a big boy and I know what works best for my own application. All I asked was if there was anyone who has rec'd a Jan. ordered truck with 4:10's what they ended up getting.



Think about this , DC working with Eaton and there Med. duty 7 speed. Same 1st to 5th (direct 1:1) but a . 8_? O. D. and a second . 73 O. D. make it standard with 3:73 and 4:10 and 3:54 option.

 

[DPKetchum]

One I don't TOW AT 75 MPH. I pull about 10k and 4. 10s is the only way to go. Neighbor has 3. 73s and always says what a mistake they were for towing in hill country. Says the only way to pull is to run 75MPH and its not safe or easy on the big inclines and curvy interstates. Says my truck pulls MUCH better then his. I go into 6th at 40 or less and its 65/68 mph up the hill and down the hill. Takes a LOT of incline to force a downshift. Plus if in the future I end up with more trailer no problem.

 

[Tim]

You're comparing apples to oranges. The NV5600 in your truck has a . 73:1 OD. The G-56 is . 79:1. . 79/. 73*3. 73 = 4. 03 effective gear ratio with the G-56. In other words I'm cruising like I have 4. 10s anyway.



Me personally, I want HIGHER gears. I don't think anyone needs LOWER gears at what this truck is rated to pull... but certainly at full GCWR, the 3. 73s would be desirable over 3. 42 or 3. 55.



4. 10s are not even an option for a G-56 truck so I don't even know why this is here in the first place. It can't be ordered and if the dealer told you that, they lied.

 

[surfbeetle]

I have the nv4500 and 410s. I would prefer to see a higher final gear and have more gears to shift through. The 410s suit me fine when towing on a curvy mountain road, but once you leave california, the freeway speeds while towing are 75mph in states like Arizona and New Mexico. At that speed, too much fuel is wasted doing 75.



Now to address Kirk's orginal question, even though the dealer says you can order something won't mean you'll get it that way, my brother in law ordered a '04. 5 3500 with a sunroof. By the time it actually showed up, it was an '05 with no sunroof, but all of the other options were there.

 

[QWaller]

I'm turning the same RPMs as you at cruise, with 3. 73s, even though you have 4. 10s. I stand behind my statement.



I have driven an NV 5600 truck with 4. 10s. I hated it, too...



More gears, YES!! Lower gears, NO!

Does this mean that Tim doesn't care for his new trucks gearing? Are basically ALL new G56's the equivalent of the old NV5600s running 4:10s?

 

[Tim]

Does this mean that Tim doesn't care for his new trucks gearing? Are basically ALL new G56's the equivalent of the old NV5600s running 4:10s?

Not really. Even though the G-56 has closer gear spacing than the NV-5600, with 4. 10s, you have to shift an NV-5600 faster in order to accelerate. Thus why I couldn't stand the NV-5600 with 4. 10s... . too much shifting, you were in 5th by 20 mph.



I would like to see one of two things happen with the next generation of these trucks:



A) More gears. A . 5:1 OD for empty crusing would rock.



B) Space the gears out more. The Cummins does have a fairly narrow powerband compared to the V8s but I don't think it would hurt it. 2nd, 3rd, 4th, and 5th are pretty close together if you ask me.

 

[RJOL]

I want 4:10's as the truck tows 100% of its life in winding hilly terrain ( see pic in readers rigs ) with some highway running. The 3:54's in my 01' are just too high for my particular needs. I hope the 4:10's come with a 5600 but being this late in the game I wouldn't be surprised if it showed up with a G-56 and 3:73. Oh BTW 4:10's were an option when the truck was ordered.

Kirk... Don't kill the messenger... Here is how it is: If you ordered a truck after January 05 or it was built after about the second week of January 05, and you ordered the 6 speed, it will come with a G-56 and 3:73 gears. There is no other option. It will not come with an NV5600 or 4:10 gears. The only way you can get the 4:10's is to order an automatic.



If you really want 4:10's in a 6 speed, you will have to buy a used one or get real lucky and find one at a dealer that is left over from before January.



The reason Chrysler went with the 3:73 is that with the new G-56 it is essentially the same gearing as the NV5600 with 4:10 gears.



Maybe Chrysler will offer a different setup for the 2006, but my guess is that if there is any change, it would be to a 3:54 or 3:73 choice with the G-56.



I hope you find what you're looking for... Have fun...

 

[LDobie]

KAH68, I can see how it would be impossible to find the truck you need on someones lot, i took me several hours of internet inventory searching to find one close to what I would buy, and mine is pretty ordinary. After all my searches, I don't think I found a regular cab dually, that market must be less than 0. 5% of total HD sales, but there is certainly a niche. Those look like some serious loads. If there is any saving grace in not being able to get 4. 10's anymore, the G56 has a deeper 1st gear than the NV5600 (6 something, compared to 5 something I believe), so she should pull the loads out of the hole a little easier. Hope you get everything straightened out to where you need it.



BTW, does anyone know of an aftermarket company that makes gears for the Ram HD's??

 

[kah68]

Thanks for the info guys, I wasn't trying to 'shoot the messnger', Just don't appreciate people thinking there opinions should be viewed the same by everyone else. I'll be looking for my G-56 3:73 if it ever arrives.





Thanks



Kirk