It's official! 6.7L: 350/650 and 68RFE

[hammersley]

I'm sure glad there are some folks

whu want a new design... . I just can't imagine the potential "undiscovered issues" with this whole NEW setup - GOOD LUCK BUT NO THANK YOU!!!!!

 

[AKaiser]

whu want a new design... . I just can't imagine the potential "undiscovered issues" with this whole NEW setup - GOOD LUCK BUT NO THANK YOU!!!!!

Following your logic, we'd still be making wheels out of stones and pulling the carts with oxen

 

[JLight]

Hey Guts just my two cents on the automatics, Tom lindsley has one in his built for buisness pulling semi and big payloaders use them in gravel pits all day. They are truly remarkable at the pounding the trans in both of these units take. Just my input JLIGHT

 

[JLight]

Sorry About That (guys)

 

[FPettijohn]

wet clutch autoshift

NNelson



I hate to burst your bubble BUT DCX and Gertrig are teeming to build just such a transmission. Reported to be available for 2009 model year and built in the transmission capital of the world! Oo.

 

[WAlford]

According to the documents I have seen and an email from Dr. Z the 68RFE is made in the Aisin plant in Japan. So it must be an Aisin transmission.

 

[FPettijohn]

WAlford

Unlike Dr. z's mustache that is incorrect. The 68rfe is being made in the transmission capital of the world.

Fred

 

[DCoxon]

How much power and TQ do we really need????????



I have a 06 G56 and i cross the scales at just under 26K. In first gear . . loaded mind you I can still feel the rear tires slip on dry pavment when I put my foot into it... ... dully no less. So as far as I can tell I have all the power I need. I agrea derating a manual is interesting, but we also have to remember that there a 1000's of people buying this truck that no very little about driveing and all about using the skinny peadle until something breaks, the way I see it, its for warentee issues, plane and simple. to much TQ and power at the wrong time,,,,, and your going to make a cork screw out the the drive line.

Amen to that! Someone who understands why the manual version is de-rated. It's a small transmission for the torque - very small... 115mm centre distance I recall. And here you have a huge diesel motor, and a clutch that someone can side-step. In the Automatics all you have is a gas-pedal, and an engine that will (no doubt for 2007) de-fuel as the auto is shifting - basically the engine is managed against the trans, such that it is much more difficult to abuse the unit. Take as much of the idiot behind the wheel out of the equation and you can do so much more! :-laf

NNelson



I hate to burst your bubble BUT DCX and Gertrig are teeming to build just such a transmission. Reported to be available for 2009 model year and built in the transmission capital of the world! Oo.

I understood the new plant to be manufacturing a range of automotive units all under 8000lbs? I certainly don't recall reading anything different than that, but it'd be great to see a DCT behind a cummins diesel. Interestingly Audi/VW no longer offer TC auto's behind any diesel engine in the DQ250 (current transverse DCT) platform... Basically they use the DCT trans behind (next to!) any diesel engine they can. Read into that what you want, but DCT's are the future of vehicle transmissions for sure (excluding the magic that the hybrid systems are doing of course)! Oo.

 

[WAlford]

Fred What Do You Consider The Trans Capital Of The World? Indiana? if so your world must be pretty small.

 

[KOG]

Chrysler had a "DSG" under development then the "merger" ocurred. Daimler cancelled it. The automanual under development now is light duty. There's a FWD version and I have no information on RWD variants at this point. ALLPAR is keeping current information posted on this topic.

 

[RVTRKN]

September 1 is DC press kit day, and they are already revealing the January 2007 6. 7 liter Cummins for the pickups will be rated at 350 hp @3000 rpm (it actually says 3013 rpm) and 650 lb-ft @ 1500 rpm. The 68RFE will also be available at the same time.



Ready for the kicker?



The engine is de-rated for the <B>MANUAL</b> transmission - only 610 lb-ft. @ 1400 rpm... the total opposite of the second-gens.



Engine is 408 cid, 6690cc. Bore and stroke is 4. 21 x 4. 88.



68RFE ratios:

1 - 3. 231:1

2 - 1. 837:1

3 - 1. 410:1

4 - 1. 000:1

5 - 0. 816:1

6 - 0. 625:1

R - 4. 444:1



G56 carries over unchanged. Current 325/610 5. 9 liter engine and 48RE automatic end production in December, last orders will likely be November 1st, give or take.



As previously announced, the 3500 chassis cab will be rated at 305/610 for both the G56 and the Aisin AS68RC automatic.



Aisin ratios:

1 - 3. 74:1

2 - 1. 96:1

3 - 1. 34:1

4 - 1. 00:1

5 - 0. 77:1

6 - 0. 63:1

R - 3. 54:1



No changes to axle ratios... just the 3. 73 and 4. 10 diffs.

I talked to a Dodge Rep. at the Dodge Rodeo Display in Las Vegas, and he argued with me on your numbers and said that the C&C will be 305HP and the Regular trucks will get the 350HP regardless of trans for either trucks

 

[KCJackson]

I talked to a Dodge Rep. at the Dodge Rodeo Display in Las Vegas, and he argued with me on your numbers and said that the C&C will be 305HP and the Regular trucks will get the 350HP regardless of trans for either trucks

I didn't say the G56 pickups got 305 hp. The G56 pickups *do* get 350 hp, but they are limited to 610 lb-ft. That's why the hp peak is exactly 3013 rpm:



350 hp x 5252

------------------- = 610 lb-ft

3013 rpm



Because the computer doesn't know when you are going to shift a manual, it can't de-fuel like it can with an automatic. So It was decided to give the G56 pickups a dead-flat torque curve.