What year did G56 get introduced

[DThibault]

I am looking for a 3rd gen truck. What year did Dodge change from the NV 5600 to the G56. Thanks,.

 

[n7gxz]

I believe it was either a mid model year 2004 or 2005. Easy to spot if you look under the truck, G5600 is a cast iron case and the G56 is an all aluminium case.

Kevin

 

[ENafziger]

The G56 was first used in the '06+ model trucks. A 2005 will still have the NV5600.

 

[Joseph Donnelly]

IIRC, the change from NV5600 to G56 was during the 2005 model year.

Ahhh, here it is, p. 15 of the Turbo Diesel Buyer's Guide:

Transmissions:

Throughout the 2005 model year the New Venture NV5600,

six-speed manual was replaced by a Mercedes Benz

designed G56 six-speed manual transmission. The

reason for the change: New Venture Gear was a joint

venture company between DaimlerChrysler and GM. In

December of 2002 the partnership was disolved and New

Venture was/is wholly owned by GM.

The ratios of the NV5600 versus the G56 are shown

below:

1 2 3 4 5 6 R

G56 6. 29 3. 48 2. 10 1. 38 1. 0 . 79 5. 74

NV5600 5. 63 3. 38 2. 04 1. 39 1. 0 . 73 5. 63

 

[GCroyle]

Easy to spot if you look under the truck, G5600 is a cast iron case and the G56 is an all aluminium case.



Kevin

Kevin,



Agreed, and possibly easier to ID by looking at the stick. G56 REV is a knee knocker. When I bought my '05 I wanted the G56, it was new and I just wanted it. Checked with the Dodge salesman, oh yes sir it will have the new transmission you bet. Came in NV5600.

 

[Regcabguy]

It's nice having reverse close by in case you need to rock the truck when stuck. Never hit my knee and I'm 6'4". If it just had an iron case...

 

[6speed]

I want one of the G56 gear knobs for my NV 5600, so when somebody trys to steal my truck and look at the shifter for the gears, they can't find the correct geat for reverse. What ya think?

 

[GCroyle]

6speed,

I think the best one I saw was a 1st Gen 4X4 with a custom twin stick gearbox. Not sure what its formal name was. We had a dyno day on '07 and Dave D. owned the dyno, that twin stick 1st Gen around the world twice survivor truck with 3 sticks had Dave in a what stick is next quandry. the video shows him hunting for the next gear.

But why did Dodge change the markings from 1-6 to L-1-5? Acknowledging the ratio change?

 

[6speed]

There still some people that think they only put 5 speeds in our 3rd gens. Actually I have the 6 as most know that they came with and the GV. But I have buddy thats wanting to do a 9sp out of hot shot type truck. He knows that the floor will have to be modded as well as some air supply. Let him do that and maybe I'll try later it later.

 

[AH64ID]

IIRC, the change from NV5600 to G56 was during the 2005 model year.
Ahhh, here it is, p. 15 of the Turbo Diesel Buyer's Guide:
Transmissions:
Throughout the 2005 model year the New Venture NV5600,
six-speed manual was replaced by a Mercedes Benz
designed G56 six-speed manual transmission. The
reason for the change: New Venture Gear was a joint
venture company between DaimlerChrysler and GM. In
December of 2002 the partnership was disolved and New
Venture was/is wholly owned by GM.
The ratios of the NV5600 versus the G56 are shown
below:
1 2 3 4 5 6 R
G56 6. 29 3. 48 2. 10 1. 38 1. 0 . 79 5. 74
NV5600 5. 63 3. 38 2. 04 1. 39 1. 0 . 73 5. 63

Correct, 05. 5 was the changeover from the NV5600 to the G56 as well as the plastic end-capped IC to a all metal one.

 

[cerberusiam]

Correct, 05. 5 was the changeover from the NV5600 to the G56 as well as the plastic end-capped IC to a all metal one.

And lest we forget, the infamous DMF made its debut at the same time.

 

[Grizzly]

Kevin,



Agreed, and possibly easier to ID by looking at the stick. G56 REV is a knee knocker. When I bought my '05 I wanted the G56, it was new and I just wanted it. Checked with the Dodge salesman, oh yes sir it will have the new transmission you bet. Came in NV5600.

Thank your lucky stars you did get the NV5600. IMO it's a better, stronger and more reliable transmission and it doesn't have the DMF.



george

 

[6speed]

215K on mine with the AMSOIL, coolers and over fill. Been towing heavy 25. 5-27K for about 4 years now and no problem with the NV5600. Runs about 185 when towing in 5th over. In 6th over it might get up to 205 on a hot (90's) day.

 

[AH64ID]

Thank your lucky stars you did get the NV5600. IMO it's a better, stronger and more reliable transmission and it doesn't have the DMF.

george

I sure would like the . 79OD that it had from 05. 5-07. 4 thou.

 

[EDankievitch]

2005 late July they started to go into the trucks. I had an 05 that was built in July it was delayed due to the transmission change. It didn't make it to the dealer until Sept. As for reverse being close I found it way too easy to drop it into reverse rather than 2nd. It makes the guy behind you at the light all that happy... .

 

[cerberusiam]

2005 late July they started to go into the trucks.

They G56 was installed starting in January 2005, the NV was gone at the end of 2004. Don't have any idea what they were telling you but it didn't have anything to do with a transmisison change in July. July is the build out month for the current MY and tool up for the next. The MY06 trucks starting rolling off the line in August.

 

[GCroyle]

And lest we forget, the infamous DMF made its debut at the same time.

cerberusiam,



Well, that depends on what counts and what doesn't. The 1988-1997 Ford 7. 3L is the originator of the reputation of the DMF for ever and ever. In '99 the 7. 3L went solid.



Throw rocks if you want, they have been sold all over the world, mostly pass cars now, but they show up in a lot of places. I knew it was not made by the same company that made the DMF famous (insert negative comment here) and we have made many $$ off of selling them but we've made a lot more I think helping folks remove them. We bought an '07 and a few hundred miles into it we pulled the DMF and put our 1st S/F system into it.



I'm into the keep it forever mode on my '05 right now, in fact the VW TDI is a part of the plan to save the '05. I do change the oil in the NV5600 and cringe just a bit over the $$ for the Syncromesh stuff. But nothing feels like that Cummins at about 1800 RPM with the Airstream behind it, it just settles into a cruise mode and enjoy the view.

 

[cerberusiam]

Well, that depends on what counts and what doesn't. The 1988-1997 Ford 7. 3L is the originator of the reputation of the DMF for ever and ever. In '99 the 7. 3L went solid.

Does that mean you like\dislike the DMF and\or agree\disagree with what I said?



I did say IN-famous not famous which is apporpriate for the track record. In other words, putting an LD DMF on a medium duty engine and expecting GOOD results is overly optimistic. That has been proven as fact, not opinion or conjecture.

 

[GCroyle]

Does that mean you like\dislike the DMF and\or agree\disagree with what I said?



I did say IN-famous not famous which is apporpriate for the track record. In other words, putting an LD DMF on a medium duty engine and expecting GOOD results is overly optimistic. That has been proven as fact, not opinion or conjecture.

cerberusiam,



Disclaimer, I work for an aftermarket clutch company. We sell systems made by, well almost every major supplier to the OE market and a lot of our own product.



My . 02$ worth.



The DMF seems like it has many applications and from an engineering standpoint DOES have a contributing role to minimizing NVH. It actually can be sorta explained as to how it works.



My . 02$ as to its negatives. Solid Flywheels (SF's) have ruled for years and the service of them has been established, use, regrind, use, regrind until someday they finally get scrapped. The DMF while some were sorta sucessful at resufracing the 7. 3L design actually didn't realize how close they were to totally ruining it with their best efforts. Those (7. 3L DMF's) actually had a robust double row ball bearing to pilot the secondary. The versions since the D-Max have used a bushing of several versions that I have seen and the D-Max and early G56 seemed to be prone to bushing wear leading to secondary orbiting and out of balance. Later versions SEEM to have a longer life bushing material. The current version doesn't lend itself to resurfacing because there is no real way to isolate the grinding debris from getting inside the DMF guts and most importantly, its like trying to resurface a moving target. The secondary rotates and can deflect side to side against the primary. I bet a lot of shops have just said, can't do it.



The one thing that I sorta fault Dodge for is did they really listen to the market about the negative PR from the 7. 3L DMF's (which by the way were offically discontinued a few years back by the mfgr. ) if they did, was the introduction of the DMF inevitable with the loss of the NV5600 and sourcing the next trans from a "sister division"? Any crude roundtable with Dodge owners would have given them an earful about the reputation of the existing DMF let alone the customers occasionally decide to tune the Cummins up a bit.



The DMF is a bit of an engineering marvel that does one heck of a job in a challanging enviroment and if you've ever taken one apart, you'll see the content is pretty impressive. Remember the entire system satisfied the Dodge powertrain testing and product approval process so it stood up to their criteria and passed the testing.



This next piece can easily be found and I'm quoting.



LuK recently published a shop wall chart "Tips fof a sucessful clutch installation" possibly identifed as LIT202E.



"10 Things you should know to do the job right.



1. The Dual-Mass Flywheel is a wear item and should be replaced at EVERY clutch change. "



The list continues with additional points.



I believe that their message is that the DMF is a very active part and has taken millions and millions of engine pulsations and effectively filtered them as a part of the NVH contribution to the drivetrain and it has been subject to wear. It needs replaced.



The DMF has a role, but my truck does not have one, never built with one and for our use a simpler robust component does a great job. I'm quite satisfied with my NV5600 SF based system. IMHO, the KISS program for these strong powertrains has a lot of merit, YMMV.



The views express by this TDR self paying member are his own.

 

[NIsaacs]

I sure would like the . 79OD that it had from 05. 5-07. 4 thou.

I don't mind my 6th, even with 3. 55's but I would like the 1st gear of 6. 29 v/s my 5. 63.



Nick