Motor Change

The engine swap is easy it's just checking the wiring setup for truck to engine depending on the ecm difference.

 

Not a mechanic but when I had a offer of a free ($2500) truck with a blown Cummings engine. Also had access to a totalled truck with a 2 year old det ser60.
All the mechanics I talked to told me. Can be done but cost will make it not worth it. Something about changing all the wiring, and other things.
I'd take this question to the mechanics forum.

 

I Know nothing about the mercedes setup, but most changes are possible, BUT if you are going to be paying shop rates for the job. it may not be feasible.

 

It's doable. If you have to pay for the work I would advise against it. I know if someone came to me with that swap I would probably turn it away for fear of getting stuck with the truck when the owner runs out of money.

 

There’s a few shops that will do it for a few thousand if you have the engine already out of the donor truck.

 

There’s a guy here in Phoenix that does it. Last time I was in his shop he had two trucks in there from United Road, removing the Cummins ISX engines and replacing them with cat C 15 single turbo. I asked him about the cost, and he said about $35K all in.

 

35k was including the engine? If not then that is a tough call to make.

 

It can be done their are guys who can make you a new harness for transplant motors. Takes a little research and you will find them. And it wont be 35k

 

Mawk industries will make a new engine harness for about $1800. You can do this for a lot less than $35,000 but it's a lot of digging sourcing and/or having parts made which takes a lot of leg work and time. Besides the harness you'll need new engine mounts, air to air tubes, coolant tubes. The best way to do it cost effectively is if you can source a good known engine cheaply DIY or if you're not doing the work yourself have a trusted mechanic who will without gouging you. But if you're not doing the legwork rounding up parts, pulling engine, sourcing the replacement, forget it because then that $35,000 sounds like it will cover it. In most cases you're much better off just selling the truck as is and buying another one like it with the engine you really want already in it.