2500 or 3500 engine swap into 4500

Adam RB said:

I have a 2009 Dodge Ram 4500 Cab and Chassis, the engine started knocking and I am looking to put a used engine in it. I have talked to several junk yards that say you can't put the 2500 or 3500 engine into a cab and chassis truck. I don't see what the major difference is? Can you put the regular truck engine into the cab and chassis? I feel like they are just trying to charge me extra for the cab and chassis engine.

Thanks

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I bought a 2014 4500 Cab and Chassis from my veterinarian. They had the engine go out when the bluedef sensor failed causing fuel system to over load it causing catastrophic failure pulling huge grade in the Utah mountains with a horse trailer . He had a shop install a 2014 2500 engine. They used everything the original truck came with except the long block. It’s also deleted it and it’s running well. So it works. I was told from a injector sales company that Dodge had made the computer now identify the correct long block and injectors.

The injectors are Different in the 2500/3500 than the Cab and Chassis as per my conversation with Injectorsdirect.com
They also said the computer on Rams after 2012 can identify the injectors correctly and adjust. Not sure about the older Rams if you would need the computer too? Contact them and ask...