will a Allison Trans fit behind the 6.7 without troubles

[Simplysmn]

Have a buddy that bought a 2010 2500 ctd and is on his 3rd trans but had Dave Smith Motor's work on his truck and for a extra 2 grand or so they put a Allison trans into his truck but he's getting crappy fuel econ and he's pulling his hair out trying to find out why ? Anybody have any Idea's ?????

 

[Bob4x4]

Way back in the day Dodge engineers found the allison used too much power / fuel to make it a good choice for our Cummins in their field testing

 

[cerberusiam]

If they used a stock Ally with the default control programs then that is likely the problem. The transmission is so busy protecting itself from the engine it just delivers crappy economy.



The only way to make it work better is build the trans and customize the shifting\lockup sequences optimized for the Cummins.

 

[Simplysmn]

Well that's what I am trying to figure out with him I did not know that Dodge Dealer could put a Allison trans into a newer truck without dodge causeing a fuss

 

[cerberusiam]

A good mechanic with access to the electronics can make it start up and run on the floor if needed. Turn off the controls for the OE auto trans and you drop anything behind it.



Now, the question is did they really put an Allison in it or just upgrade the 68RFE. Getting this information 2nd and 3rd hand with no pictures is tough to validate.

 

[Simplysmn]

Yes your right I asked him to send me a copy of the bill and a picture of trans so maybe we can figure out what is going on . Thank you Both for the responses on the other forum I posted a question all I am getting is being called a troll so I told them where they could put there advise

 

[Cummins12V98]

My guess id they put in the Asin transmission used in the cab and chassis trucks. I have had other people say that Dodge put Allison trans in trucks. Miss pronounced name.

 

[KB0OU]

There a a few Allisons out there, what did they put in and how did they program it. Some of them can be programed to do a lot of neat things if ya know how.

 

[HBarlow]

I had the same thought as cerberusiam expressed. I don't believe the story that a line mechanic in a Dodge dealer installed an Allison transmission in a late model Dodge for several reasons.

One, it would require some serious old-fashioned car-guy shade tree engineering to cobble such a rig together, two, how in the world would they program it to work with the ISB6. 7, and three, how would a dealership skate past the obvious emissions related issues.

 

[RonD]

Why would anyone do this?, the 68RFE is a fine transmission, maybe the Guy just likes to be different and spend money, Ron

 

[HBarlow]

Yes, that or gullible enough to allow himself to believe that a franchised Dodge dealer actually installed one when all they did was put a standard rebuild kit in his 68RFE.

 

[sag2]

If I recall one of the reasons Dodge did not go with Allison is the tunnel was too small to fit the trans without major redesign of the floor. As far as making it fit the Cummins, I have to believe there are many Cummins/Allison combinations in other applications, so finding an adapter plate to fit both should be an off the shelf item.

 

[RonD]

Yes, that or gullible enough to allow himself to believe that a franchised Dodge dealer actually installed one when all they did was put a standard rebuild kit in his 68RFE.

I suspect your correct, but DSM is not an ordinary Dodge Dealer, they do a lot of custom stuff, more than the normal Dealer does, they are also a GM Dealer, so it could be possible, but not probable, since the OP was not the owner of the truck, but a friend, we may never really know

 

[rwitt]

Way back in the day Dodge engineers found the allison used too much power / fuel to make it a good choice for our Cummins in their field testing

I've read that also, but if that's the case, and it uses to much power/fuel, how does the Dmax outperform Ford and Ram (which I could care less) at all of the towing tests that have been done lately? I just rode in a GM Dually for a trip to Death Valley (800 miles) towing a 13,000lb toy hauler on US395, and didn't think the Allison does any better job than the 68rfe in my truck.

Rich

 

[Simplysmn]

Untill I get more information I will hold posting that way I have Fact's and not just info from over the phone bare with me guy's

 

[HBarlow]

I've read that also, but if that's the case, and it uses to much power/fuel, how does the Dmax outperform Ford and Ram (which I could care less) at all of the towing tests that have been done lately? I just rode in a GM Dually for a trip to Death Valley (800 miles) towing a 13,000lb toy hauler on US395, and didn't think the Allison does any better job than the 68rfe in my truck.
Rich

Duraduds (and Furds) accelerate faster than a Cummins because they are a shorter stroke V8 configuration. Compare side by side performance with a Dodge with equal load and the Dodge with Cummins will pull the same grade at a lower rpm in a higher gear.

Duraduds and Furds don't impress me regardless what some claim they can do.

 

[TFucili]

After my poor experience with the Ally in an '04 Chevy, they couldn't pay me $2,000. 00 to put it in my Dodge. The big Allys are good, the 1000 is totally overrated IMHO.

 

[Bill Stockard]

The big Allys are good, the 1000 is totally overrated IMHO.

Yep, I agree. The larger Allisons in medium and heavy duty trucks are just about bullet proof. The 1000 series is nothing like its big brothers.



Bill

 

[CBlack]

I've heard the 6. 7L doesn't like the electronics with the Allison and has to have a stand alone controller for it to work properly. And from what I understand it has to be programmed correctly for it to work best.

And the 1000 is a great transmission for light duty trucks, in particular if the clutch packs are upgraded.

 

[Brianpump]

I have an allison 1000 series in a second gen truck with adaptors from destroked and a cusom tune in the computer. To those who think they rob too much power go tell another tall tale of believe one. Compared to a built to the hilt 48re the allison feels like it gets about fifty more HP to the ground. But to address the question yes you can put one in a newer truck but to intergrate the electronics would be a nightmare. Yes in other applications the 6. 7 and allison are mated and have compatable electronics, But Dodge or Ram uses a different programing than Cummins commercial engines. The cost of just the adaptors is about $1600. 00 and e;ectromics close to the same so even for a used Allisn with labor you are looking at a minimum of $5000. 00 probably more like $7500. 00 So no they did not put an Allsion in the truck for a couple grand.