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Engine transmission swap Buddy 6-21-06  
Can a 6V92 or ? coupled with an Allison transmission be installed into a 1966 MC5A with out extensive frame etc modification? Is there a syncronized transmission that can be used behind the current 8V71?
Re: Engine transmission swap David 7-25-06  
ALLISON 2100 MH TRANSMISSION Is there an aftermarket computer and harness to operate this transmission on the older 6.5 chevy manual injection pump diesel engine, by using the GM adapter casting Number 15030921?
I have all 3 items:
6.5 diesel engine
Allison/GM bellhousing adapter
Allison 2100 MH from a 8.1 gas engine

but don't know how to make it work for me.
Re: Engine transmission swap TomC 7-11-06  
6V-92TA with the Allison HT740 is a good swap in the MCI-5. You'll want to increase the radiator size and the turbo plumbing will be a bit of a challenge. But once done, you'll love the performance. Good Luck, TomC
Re: Engine transmission swap Mark O. 8-2-06  
With enough time and $$$ you can usually do just about anything. The question you have to ask yourself is if the exercise you plan will be worth the effort.

When you contemplate swapping stuff in and out you have to keep in mind what your end game is going to be.

You can spend a lot of time and $$$ and not be much better off than what you are currently.

Some of the -5's had over the shoulder drop boxes similar to some of the Eagles and Flx's. Care must be used to not overstress the drop box with too much HP or torque.

Since you say you already have an 8V-71 the space should be okay and the HP and torque shouldn't be a problem.

A better swap would be to find an 8V-71T. It should bolt right up where to where the 8V-71 is currently.

The question I have is are you sure you have an 8V-71 and not a 6V-71? If you do have a 6V-71 swapping in a 6V-92T would fit better but you are really stepping up a lot in HP and torque. And if you go with an Allison you are really going to need a whole LOT more cooling capacity.

As far as using a GM 2100 from a gas engine and putting it behind a diesel engine, it may or may not work okay. The torque curve and HP ratings are vastly different. Sometimes the internals are different even though the externals look identical.

If nothing else, the torque convertor and shift points are going to have to adjusted or changed in order to take advantage of the different characteristics between the 8.1L gas and the 6.5L diesel.

Good luck and happy trails.

Mark O.
Re: Engine transmission swap Tim Grisham 1-20-08  
I own a converted MC-7 with a 8v71 non turbo. I would like to repower my coach with a turbo engine can you tell me what are my opptions? I currently have a Allison fuel squeezer 4 spd auto trans.

Thanks! Tim
Re: Duramax/Allison P30 Swap Jorge 2-17-08  

I have an 1988 Winnebago Elandan with a 454 and T400. I would like to install a 6.6 Duramax and Allison T1000 transmission. I know there is a minor clearance issue with the Allison (on the top-side around the middle). Can this swap be done? Would the Duramax fit on the existing engine mounts? Another option would be to go with an 8.1/Allison OR 7.4-8.1 with a heavy-duty 4L80E. The goal is power, torque, efficiency. I have insulated the entire cab/engine area and floor in order to lower road noise. Thank you!
Re: Engine transmission swap Joanna Rodriguez 2-16-08  
Hi, my name is Joanna and I have a 1998 honda civic, I want to switch the automatic transmission to a manual transmission. Can you please e-mail me back regarding this matter and let me know how much it will run me?

thank you,
Re: Engine transmission swap Harry bell 5-6-09  
I have an 8v71 detroit diesel with a manual trans package and any way I measure the distance between the trans output shaft and the differential flange I end up with needing a driveshaft to work in a 14 inch range. the allison 740 series is 10"s longer causing the issue any ideas harry
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