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GMT800 - 2500HD Gasser - Looking to 6BT swap

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  #1  
Old 09-29-2023, 02:05 PM
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cool GMT800 - 2500HD Gasser - Looking to 6BT swap

So, my plans are to Cummins swap my GMT800 Silverado..

It's a 2006 2500HD with a LQ4 that i will donate to my BMW E87 Track Toy build..

It's been 15 years since i had a Duramax, but had a dozen Cummins trucks in between,
i was active on this forum a while back but have since forgot my credentials for it..

I build cars and trucks on the side on a professional scale, with a skillset of 6/10 in fab
and i would rate myself at around 9/10 in wiring.

I'm not sure what direction i'm going in with this, so here's a few questions;

Would it be any more complicated to do a CR5.9/6.7 swap rather than a 6BT 24v VP swap
regarding electronics, given that i would do a SKIM delete on the donor truck before disassembly?

I want to source a Allison 6sp out of a 06/07 Duramax to mate with whatever i end up swapping in,
i've been looking at adapter plates but not sure what to go with, any pointers?

Now, for engine management i would run the stock ECU, but what about TCM?
Should i try to wire up the TCM for the Duramax and use Arduino to translate the CAN data?

I would source a reworked Duramax Cluster as well since i'm doing a full Denali interior swap
as well and i sort of want it to behave and work as it were from factory 😎

Thanks in advance guys.
 
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Old 12-27-2023, 10:19 AM
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I am new here but I always find unique swaps interesting so thought I might throw in a couple comments.

I am like the idea of a LS3 swapped E87. I did a LS1 swap on a E36 and after some development it really dominated on the track.

I will admit I am not hip to all the acronyms you used here in your post such as a CR5.9/6.7, assuming this is the modern cummins engine?
I will say that the 6BT 24v and a VP pump would be a pretty straight forward swap with lots of options on the market.
Have you considered a L5P Duramax swap? I have watched Banks do alot of development work with it and it seems like a solid performer.

In regards to the Arduino, I have used microcontrollers for various projects including a temperature based glow plug controller and I can say
I am not a fan of the Arduino forums, very difficult to get help, lots of noise and the guys on there are electronics tinkerers, not mechanics.
You start talking automotive and especially diesel and they don't have a way to conceptualize it since they don't turn wrenches. Regardless
interpreting CAN bus data and TCM integration should not be too difficult a task to get done.

I recently had to get an adapter plate custom made and I have some tips. You don't have to find a catalog plate, you can have a machine shop
make one. Just make sure you pick a competent machine shop and you have at least a handshake on a timeline. The more you can prepare ahead of time
to help them get the project done, the better the outcome. Mine was a bit of nightmare and it came from a very well respected outfit that I will not name, but
we can say they are record holders at Bonneville so I was a little dismayed at the outcome. It was supposed to be steel and spec'd in metric, ended up aluminum
and standard threads, cost $5k, after they told me it would be around $1,500 and a couple months, took a year to complete and I had to take it to another machine shop to fix it, paying yet another $500.
Crazy thing was I gave these guys, the old engine block, the new engine block, the transmission bell housing, flywheel, starter, which is what they asked for.
I checked in frequently, answered questions and collaborated as best I knew how. Wasn't like a dumped a bunch of old **** on there front porch and said have at it.
So my suggestion would be to do all that work yourself and get it into CAD, even if you have to hire someone to do the CAD, then take the CAD files to the machine shop so all they have to do is machine a plate to your specs.
I watched these guys build basically 400mph land missiles, yet they struggled to design an adapter plate, I was so confused. They screwed up the first one and made me pay for it too.
I just think they actually did not want to take the job but took it in anyways and just begrudgingly did the job. I mean it was mating a Japanese diesel to a French transaxle, pretty straight forward task, what could possibly go wrong? lmao!!
Anyways don't mean to gripe, just wanted to say that a custom adapter plate is totally doable, just think it through and plan on designing it yourself.

Well I should probably push off and get to work.
Cheers!

 

Last edited by shittletits; 12-27-2023 at 10:23 AM. Reason: grammer correction
  #3  
Old 01-29-2024, 01:09 AM
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Originally Posted by shittletits
I am new here but I always find unique swaps interesting so thought I might throw in a couple comments.

I am like the idea of a LS3 swapped E87. I did a LS1 swap on a E36 and after some development it really dominated on the track.

I will admit I am not hip to all the acronyms you used here in your post such as a CR5.9/6.7, assuming this is the modern cummins engine?
I will say that the 6BT 24v and a VP pump would be a pretty straight forward swap with lots of options on the market.
Have you considered a L5P Duramax swap? I have watched Banks do alot of development work with it and it seems like a solid performer.
Hidden Info

In regards to the Arduino, I have used microcontrollers for various projects including a temperature based glow plug controller and I can say
I am not a fan of the Arduino forums, very difficult to get help, lots of noise and the guys on there are electronics tinkerers, not mechanics.
You start talking automotive and especially diesel and they don't have a way to conceptualize it since they don't turn wrenches. Regardless
interpreting CAN bus data and TCM integration should not be too difficult a task to get done.

I recently had to get an adapter plate custom made and I have some tips. You don't have to find a catalog plate, you can have a machine shop
make one. Just make sure you pick a competent machine shop and you have at least a handshake on a timeline. The more you can prepare ahead of time
to help them get the project done, the better the outcome. Mine was a bit of nightmare and it came from a very well respected outfit that I will not name, but
we can say they are record holders at Bonneville so I was a little dismayed at the outcome. It was supposed to be steel and spec'd in metric, ended up aluminum
and standard threads, cost $5k, after they told me it would be around $1,500 and a couple months, took a year to complete and I had to take it to another machine shop to fix it, paying yet another $500.
Crazy thing was I gave these guys, the old engine block, the new engine block, the transmission bell housing, flywheel, starter, which is what they asked for.
I checked in frequently, answered questions and collaborated as best I knew how. Wasn't like a dumped a bunch of old **** on there front porch and said have at it.
So my suggestion would be to do all that work yourself and get it into CAD, even if you have to hire someone to do the CAD, then take the CAD files to the machine shop so all they have to do is machine a plate to your specs.
I watched these guys build basically 400mph land missiles, yet they struggled to design an adapter plate, I was so confused. They screwed up the first one and made me pay for it too.
I just think they actually did not want to take the job but took it in anyways and just begrudgingly did the job. I mean it was mating a Japanese diesel to a French transaxle, pretty straight forward task, what could possibly go wrong? lmao!!
Anyways don't mean to gripe, just wanted to say that a custom adapter plate is totally doable, just think it through and plan on designing it yourself.

Well I should probably push off and get to work.
Cheers!
Thanks for the info, I appreciate it. I will keep it in my mind.
 
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