Transmission Tuner

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Allison®6-Speed Swap

Why should I consider an Allison transmission® conversion for my Dodge diesel or Fordcummins truck?

Allison 6 speed conversion in action

The Allison® 1000 5 and 6 speed is known for it's dependability in OEM applications, and with it's huge case it can be built stronger than any other transmission out there for the hard working contractor truck or sled puller / race truck. The challenge with a Cummins Allison 6 speed swap or installing an Allison into a Fordcummins truck in the past has been getting a good control system.  It is possible to use a stand alone Allison control system, and that is what I offer, but sorting though all the myths and options that don't work so well on your own can be a real chore.  If you get the wrong type of system that doesn't work right, your exciting Cummins Allison conversion gets super frustrating real quick.  If you are having issues with a system you bought from someone else, join others who have already and give me call.  I can help get you on the road.  If you are considering an Cummins Allison swap, doing good research will help you make an informed decision.  Dodge Cummins, commercial medium duty truck, or Chevy gas engines are all possible engines that can be used in front of an Allison- and I can set you up with adapter parts or point you to where you can get them.

Allison®1000 6 speed Control Systems

If you are considering purchasing an Allison®controller and doing a Cummins Allison 6 speed conversion, do your homework before you buy.  Asking the following questions of any vendor will help you decide what and where to buy:

For a limited time, $1175.00 for a MD Controller, Harness with fuse/relay box option, Base Calibration, and Installation Support!

** Other parts and services may be needed for your application.

Allison 6 speed Stand Alone Control System

What can a control system from transmissiontuner.com offer?

See a video of my system in action on youtube

Below are some reasons why I believe the system I offer is the best on the market today:

It's Tunable:

A major key to my system's success is the tuneability of the system with EFI Live, which allows me to custom tune the shift points, shift quality, and torque converter lockup where they are needed, according to your specific application and use.  All of the tuning can be accomplished through emails over the internet right where you live.  While it is possible you may luck out with a "perfect pre-loaded tune", it is very rare - tuning is almost always needed or wanted- especially with high performance engines or hard working trailer pullers. 

With my system you can still drive your truck with the system right out of the box- and yet have the next step of tuning in your back pocket.  I set up the controller with a base tune that is customized for your engine, gear ratio and tire size- and we tune from there.  My price for the control system includes tech support for getting it installed, and then we switch to per hour charges for the tuning. 

An EFI Live AutoCal or V2 is required to data log your transmission in action and to load the custom tunes I build for you by studying the data logs sent in an email.  Tuning can take some time- but imagine not having the ability to modify your shift points at all, having to learn how to tune it yourself, or having to send your TCM to a vendor for changes!  Blank AutoCals are available from online vendors I can recommend for around $360.00, a price I cannot compete with, so rather than charge you more I send you to the best deal.

Other types of systems have been offered that have end user tunablility built in, but unless you really enjoy a challenge and like learning new computer programs they will not at all be beneficial to you.  Even so, if you want to purchase or already have an EFI Live V2 you can tune my systems yourself.  I do not recommend tuning it yourself and it's too complex to teach you how to do it in a few hours, however your input on what the transmission needs to do is always welcome.  If you want it to do something that is not a good idea I will tell you why and if you still want it, we can try it.

It's simpler than others out there: 

Swapping an electronic controlled transmission into your vehicle is not kindergarten stuff - it can get pretty complicated if the system being installed needs a bunch of supporting equipment for it to work.  I work hard to keep my system as simple as it can be and yet work as well as an OEM system without any unessecesary modules or ECM modifications to your vehicle - without sacrificing cruise control and other functions that you want to keep.   In fact some electronic engines can send necessary signals to my system just by plugging a connector in.  Read more about that here.

For non-electronic engines, no other aftermarket mystery modules, custom valve-bodies, or a bunch of sensors are required for fully automatic 6-speed operation- just the right Allison TCM with the correct program, wire harness, and throttle position sensor.  If you have a 12 valve Cummins, you may be able to use the original style Throttle Position Sensor, however the Allison® TPS is much more durable- so if your 12 valve had a manual trans behind it originally, or if your Dodge tps is worn out, it is worth the extra money to buy an Allison TPS.  Rather than rip you off on parts you can buy yourself from other vendors, I can send you to the best places to get one.  

For the more complicated swaps, I offer what I call a TCR module.  This module can convert throttle position signals from a sensor you may already have in your vehicle to work with the new transmission control system- and for some vehicles, it can also be configured to merge factory servo-less cruise control systems and factory dash gear displays with the Allison control system.  Pricing for the TCR module depends on your needs, but is between $350-$450.00. 

It has OBDII diagnostics:

You won't have to find an Allison® dealer or shop with an expensive scan tool to diagnose issues if you have them.  The AutoCal has exceptional diagnostic abilities when used with a laptop computer- including reading diagnostic codes, and dynamic testing such as fast learn and manual gear command.  If you have problems that aren't easy to solve you can do a data log and get me involved with whatever issue you are facing.  If you go on a trip and happen to leave your AutoCal at home, any OBDII code reader or scan tool will connect to the system.

Good Value:

Even though the Allison 6 speed swap is by far the most expensive transmission conversion out there, I can offer a system with good value- one that works with very available tech and tuning support start to finish.  There might be cheaper ways to do it using junk yard parts that you can get working kind of ok, and there are certainly more expensive ways to do it that may not work as well either- so again, do your homework and ask good questions.  Even my basic harness and calibration/tuning are built to accomodate neutral safety, reverse lights, tow/haul, a check trans light, hot trans temp indicator, and an exhaust brake. Harnesses are built to order so you can submit mock up models or measurements, or you can go with my universal build.  Due to a lower cost for the components, I am currently able to cut the basic price for my system to $1000.00 for a limited time only.  This price includes:

  1. New TCM Control module with a limited one year warranty that is EFI Live tune-able, and a specific base calibration for your vehicle is included. 
  2. The transmission harness with the TPS connector of your choice. The basic harness includes relay trigger wires for reverse lights, neutral safety, check trans indicator, hot trans indicator, 6th cancel, and tow/haul.  No external GM neutral safety switch is needed!

    * For an extra $175.00, I wire in a relay/fuse box and a latching relay so you can use an OEM momentary button to select the tow/haul feature.  The relay/fuse box also includes fuses and relays for LED indicator lights, reverse and neutral safety if needed for your application, and for most applications at least one extra relay for whatever other accessory you may need. 
  3. A base calibration tailored to your gear ratio, tire size and engine.  A moderate tow/haul shift schedule is included.  Initial adjustments to match up the calibration to your gear ratio and tire size are included as well if it is a gear ratio and tire size combo that I don't already have a good base calibration for. 
  4. Full installation and troubleshooting support is included in the purchase price, I can even provide supplemental instructions to help you wire up your own existing momentary tow/haul or cancel overdrive switch to activate tow/haul and the exhaust brake function if you opt out of my relay/fuse box option and want to purchase your own relays.  
  5. All the TCMs and wire harnesses I send out are tested first in my 4bt 6-speed Allison Suburban. 
  6. Custom Tuning is not included in the purchase price but is offered seperately at the hourly rate of $50.00/hr.  Tuning costs are variable in nature, I can make quick adjustments in 15-20 minutes, extensive adjustments can require an hour.  Applications with high performance engines, or extreme tow tunes require more time and I can't cut corners.  I may be able to get your trans tuned in an hour or less, but expect to spend $500.00 or more if you want extra specialized or additional calibrations. I try to surprise you with less, but prepare you for more, that's the way I sell things.

    Shift quality must be clean- no binds or flares, before the transmission can make lock to lock shifts without potentially breaking input shafts or sending you to the chiropractor - so base calibrations are not set up to lock the converter in any gear lower than 6th.  This gives the TCM a chance to learn the transmission well, and after the shift quality is good lockup can be enabled in lower gears.    

See my transmission swap comparisons page to see how the Allison® swap stacks up compared to other transmission swaps in regard to overall cost and value in gear ratios and dependability.

I typically offer the stand alone, Medium Duty Allison system- however I can also support the GM 8.1 6-speed system for a stand alone application.   There are a lot of myths and bad information about both systems- so here is some solid info on both:

8.1 GM System

Medium Duty

What other information do I need to know?

5-speed control systems are now being offered, with more options currently in development.  For a 6-speed conversion, a 2006 Allison or a medium duty 1000 series Allison with an input speed sensor is recommended- other years may be possible to use but require rpm signal conditioning.  Tuning requires a Windows based computer and an email- and full diagnostic capabilities requires a Windows based laptop computer.  Transfer case options for 4 wheel drive trucks are limited.  Contact me for further details, or if you have any other questions.   Although the TCMs I offer are made for Allison® Transmission Inc., this particular application is not endorsed, authorized, nor is it warranted by Allison Transmission® Inc. 

*The parts and services offered for sale on this site are intended to be installed only on non-emissions controlled vehicles. You will be reminded to check applicable local and federal laws before your purchase.