"Ultimate" Combo
#11
03-07-2012, 02:04 PM
There are some medium duty trucks with Cummins engines in them backed by the Allison transmissions. Usually most are the Allison 2000 and 2400 transmission. Although the bell housings between the two interchange. The Allisons are mounted up using a SAE #3 bell housing and there are stock Cummins SAE #3 adapters out there. If you get those parts you can mate the Allison behind the Cummins very easily. The electronics is where things get pricey. Since Allison transmissions are behind stock Cummins engines then it will last fine behind a stock 12v/24v or CR Cummins.
You can take a stock GM Allison TCM and modify the wiring harness to make it work for your application. It has been done on the 6 speeds as well to make it a stand alone transmissions. To take advantage of the Tap Shift and Tow Haul modes you need to wire up a BCM as well. In all the wiring isn't difficult. There is a very detailed thread on it all over at 4btswaps.com.
As far as the "ultimate truck", I personally would go with a CR Cummins with a built Allison 1000 6 speed in a Chevy or Ford body. The Ford would be good for the 4x4 with the solid axles vs. the Chevy. Although if I wanted a rock solid motor and transmission with little to none electronics. I would go with a P-Pumped 24v with a NV5600 or a NV4500. You can do almost everything mechanical on that setup. Once again I would choose an older Chevy or Ford truck for that setup.
You can take a stock GM Allison TCM and modify the wiring harness to make it work for your application. It has been done on the 6 speeds as well to make it a stand alone transmissions. To take advantage of the Tap Shift and Tow Haul modes you need to wire up a BCM as well. In all the wiring isn't difficult. There is a very detailed thread on it all over at 4btswaps.com.
As far as the "ultimate truck", I personally would go with a CR Cummins with a built Allison 1000 6 speed in a Chevy or Ford body. The Ford would be good for the 4x4 with the solid axles vs. the Chevy. Although if I wanted a rock solid motor and transmission with little to none electronics. I would go with a P-Pumped 24v with a NV5600 or a NV4500. You can do almost everything mechanical on that setup. Once again I would choose an older Chevy or Ford truck for that setup.
#12
03-07-2012, 02:15 PM
I just don't see the allisons being as strong as some of the others. IMO, a BTS 4R100 is one of the strongest autos available. I guess at that point most of the built autos will hold up to what 90% of the guys can throw at them
what i would like to see is a continuously variable transmission that can hold up to the rigorous demands of a diesel truck.
#13
03-07-2012, 02:27 PM
Agreed, the tap shift feature is nice. Not having to buy the adapter plate would be nice, but either way you're going to have to buy something to get it to bolt up, whether it be stock cummins or destroked mount. The cost comes from having to buy the allison, pay to have it built, pay for the electronics to get it working (I believe Painless sells a wiring harness for this trans), etc. Price it out, it's scary. Especially if you've got a cummins with an auto already bolted behind it. Just unbolt, get it built, bolt it back up. Simple. I guess if we're going for the "ultimate" cost wouldn't be a consideration though right?
isn't the 4R100 a 4 speed? this would make for higher RPMs during highway cruising and hurt MPGs but i guess a under/over dive unit could solve that. i think that the allison 1k can be built to hold 1000+ HP, SC G-Max or what ever its called.
what i would like to see is a continuously variable transmission that can hold up to the rigorous demands of a diesel truck.
what i would like to see is a continuously variable transmission that can hold up to the rigorous demands of a diesel truck.
As you can probably tell I am a fan of the Allison. Although I am not opposed to other transmissions. If I cannot find a good Allison I will most likely just install a NV4500 in my truck until I can find everything needed to put the Allison in it.
#14
03-07-2012, 02:56 PM
isn't the 4R100 a 4 speed? this would make for higher RPMs during highway cruising and hurt MPGs but i guess a under/over dive unit could solve that. i think that the allison 1k can be built to hold 1000+ HP, SC G-Max or what ever its called.
what i would like to see is a continuously variable transmission that can hold up to the rigorous demands of a diesel truck.
what i would like to see is a continuously variable transmission that can hold up to the rigorous demands of a diesel truck.
Allisons don't seem to hold up to well nearing the 1000hp mark and above.
#15
03-07-2012, 03:06 PM
#16
03-08-2012, 12:02 AM
for me, that would mean a do it all truck, dyno, drag, sled pull etc) who cares about fuel mileage at that point?
They really don't. Although it also depends on what your ultimate truck would be used for. I personally would use it for a toy hauler the occasional drag. Really just a DD that won't fall apart. So I wouldn't need 1000hp. I think 500hp would be fine.
i still think there is a combo that can do-it-all.
what about doing away with the transmission all together and going with a hybrid setup? mount a generator to the engine and an electric motor to the front and rear axles. with a capacitor bank and drive controller. this would make the turbo spooling a non issue, make instant torque right off the line, would help with MPGs as the engine would just be idling when doing stop & go driving or light cruising around town, these electric motors could also spin to 10K+ rpms so with the right gearing this would give h#ll on the sled pull and drag strip. less mechanical parts to brake too
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any one familiar with the VW 5.0L V-10 diesel engine? could this even be on the drawing board?
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^^^Why is this "auto merging"? these where two separate posts^^^
Last edited by 2004LB7; 03-08-2012 at 12:02 AM. Reason: Automerged Doublepost
#18
03-11-2012, 05:55 AM
I don't think many people got into it. I personally think it would lead to some good projects later on. People can see what others would think is a great combo and add to it in their own projects.
I am not sure about the whole Hybrid setup. It would be cool and all but then you get a ton of weight with batteries and then the electrical would be a nightmare if something got messed up. But I guess it really depends on your personal plans of usage.
I haven't read anything about the VW V-10 diesel at all so I am no help there. haha
I am not sure about the whole Hybrid setup. It would be cool and all but then you get a ton of weight with batteries and then the electrical would be a nightmare if something got messed up. But I guess it really depends on your personal plans of usage.
I haven't read anything about the VW V-10 diesel at all so I am no help there. haha
#19
03-11-2012, 06:01 AM
#20
03-11-2012, 06:09 AM
Although in my version of an ultimate combo I am looking for a good DD with plenty of power to play around. The Allison appeals to me real well with that double overdrive. (well the 6 speed)
