Can I replace my Volvo motor with a cummins?

Only if it's a Big Cam, lol.

 

Sure you can. It's all a matter of how much money you want to spend.

 

It was offered with a Cummins as an option

 

Might have to change the trans.

 

The question starts with the wiring harness. Why are you going away from the Volvo engine? A 2006 has probably served you well, and most likely the easiest thing to do is to replace with another Volvo power plant. Anything is possible, but the costs rise when changing out one engine for another make of engine. Maybe just easier to get a different truck. Prices are coming down.

 

you can not put older than 2005/06 motor legally, it has to be newer/equal than 2006 motor.

the cummins engine of that era (2004-09) were not that good, unless you **cough** **cough** **cough** Del **cough** lete **cough**