Engine Swapping

[donovanp97]

So Per the Year 2008 would it be more efficient to drop in a 6.7 or a 5.9 I’ve been thinking about this for awhile cause I want to convert my truck over and match it with an Allison


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[HemiLonestar]

Do you have a 1/2 ton? 3/4 or 1 ton? Have you actually thought about or done any research on what it will take to plop and have run correctly a Cummins where a hemi once sat (especially in a 1/2 ton)? Since this is your first post, I'll guess no. Someone some years back successfully swapped an old 12v Cummins into a 2002 that blew it's 360. Took months of work to get it to just fire, plus another six months to finally get gauges to work. He loved the finished project but said he wouldn't do it again.

 

[donovanp97]

I’ve done research and owned multiple different rams, never done a swap but the truck I have right now is a 3/4 ton Ram 2500
Was just putting out a feeler to see if anyone else has done it prior in the forums that had any pointers


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[HemiLonestar]

At least that gives you factory pieces to use. Probably best to use what was available that year to make it as straightforward as possible. Issue you may run into is the Allison; is it electronically controlled or a good old fashioned mechanical hydraulic? Will need all kinds of harness, the PCM, diesel cluster, the ability to flash VIN to different modules so that they will talk to each other, non FBW pedal assembly (unless the 08 diesel was a FBW, may need a different assembly). The biggest hurdle here is understanding how the different computer modules are interconnected and dependent on their communications just get the engine to fire lol. The vehicle I referenced before was a PCI bus truck, bit easier to mess with electrically that a CAN bus (which is what yours is). This is why you generally don't see many if at all swaps for Mopar vehicles made after 2005 (general migration to CAN bus systems). The exception here is engines within the same family, like 5.7 to 6.4.

 

[donovanp97]

The part I’m still deciding on rn as I am Active Duty and waiting for this last year to end so I can head home and begin my project. I’m trying to find a 12V that I can put with an Allison and drop into the truck. Don’t know necessarily where to look or junkyards or buying a crate version


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[HemiLonestar]

The part I’m still deciding on rn as I am Active Duty and waiting for this last year to end so I can head home and begin my project. I’m trying to find a 12V that I can put with an Allison and drop into the truck. Don’t know necessarily where to look or junkyards or buying a crate version


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I feel your pain (2yrs to retirement). In that situation I'd wait til you're home so you don't have annoying interruptions like deployments, training, etc lol.

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[donovanp97]

I’m just starting the look around for a block I can rebuild from, basically wanna clean up a block and buy my own parts piece by piece till it’s built


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