* Engine Mounts and Dimensions: The Cummins engine will likely be a different size and weight than the original gasoline engine, requiring significant modifications to the engine bay and frame to accommodate it. Custom engine mounts would be necessary.
* Transmission: Cummins diesels are typically paired with heavy-duty transmissions designed to handle the high torque output. Your existing gasoline transmission is not suitable. A new transmission, driveshaft, and possibly rear axle would be needed.
* Fuel System: A completely new fuel system is required, including a fuel tank, fuel lines, lift pump, and high-pressure injection system. Diesel fuel is different and requires different handling.
* Exhaust System: Diesel exhaust systems are different due to the higher temperatures and particulate matter produced. A custom exhaust system, potentially including a diesel particulate filter (DPF), would need to be fabricated.
* Cooling System: Diesel engines often require a more robust cooling system than gasoline engines. This might involve upgrading the radiator, water pump, and hoses.
* Electrical System: The Cummins engine's control module and associated sensors will require integration with the vehicle's electrical system. This often necessitates significant rewiring and potentially upgrading the vehicle's alternator.
* Computer and Controls: The vehicle's computer system may not be compatible with a diesel engine. Significant modifications or a complete replacement might be necessary.
* Emissions Compliance: Converting a vehicle to a diesel engine could easily violate emission regulations. You'd likely need to ensure the engine meets emissions standards for your region, which is a complex and expensive process.
In short, a gasoline-to-diesel conversion of this magnitude is a massive undertaking, generally more expensive than purchasing a Dodge Ram with a factory Cummins engine. It requires extensive mechanical and electrical expertise, specialized tools, and significant fabrication skills. It is not a project for a beginner. If you're looking for a diesel-powered Dodge Ram, buying one already equipped with a Cummins engine is by far the most practical and cost-effective approach.
