Swapping a 6.7 Cummins into another vehicle is a significant undertaking, a testament to the engine's legendary power and reliability. This guide delves into the complexities, challenges, and rewards of this popular engine swap, providing comprehensive information for both seasoned mechanics and ambitious DIYers.
Why Choose a 6.7 Cummins Second-Gen Swap?
The 6.7L Cummins, particularly the second-generation versions found in Dodge Rams from 2007.5-2012, boasts impressive torque and horsepower figures, making it a highly sought-after engine for various swap projects. Its robust design and readily available aftermarket support contribute to its popularity. However, it's crucial to understand that this isn't a simple bolt-on affair; it's a complex project requiring considerable mechanical skill and resources.
What Vehicles Are Commonly Used for a 6.7 Cummins Swap?
While technically feasible in many vehicles, certain platforms prove more popular and practical for a 6.7 Cummins swap due to factors like frame size, mounting points, and overall compatibility. Common choices include older Dodge trucks (pre-2007), Jeep Wranglers (though this is significantly more challenging), and even some classic cars—though these require extensive custom fabrication. The feasibility often depends on the recipient vehicle's size and existing infrastructure.
What are the challenges of a 6.7 Cummins swap?
This is where the real complexity of the project shines through. A successful swap involves overcoming numerous hurdles:
- Engine Mounts: Fabricating or adapting custom engine mounts is essential, as the 6.7 Cummins' dimensions differ significantly from those of most engines. This often requires welding and precise measurements.
- Transmission: The stock transmission is unlikely to be compatible, necessitating a compatible automatic or manual transmission swap as well. This adds complexity and cost.
- Wiring Harness: The engine's sophisticated electronic systems require a thorough understanding of wiring and potentially custom fabrication of the harness to integrate with the recipient vehicle's electrical system.
- Exhaust System: A custom exhaust system is necessary, accounting for the engine's dimensions and the recipient vehicle's chassis.
- Cooling System: The cooling system must be capable of handling the 6.7 Cummins' higher operating temperatures, potentially requiring upgrades to the radiator and associated components.
- Driveshaft: The driveshaft likely needs modification or replacement to account for the engine's different output.
- Fuel System: The fuel system needs to be adjusted to supply the 6.7 Cummins with the appropriate fuel pressure and volume.
How much does a 6.7 Cummins swap cost?
The cost of a 6.7 Cummins swap varies dramatically depending on several factors: the condition of the donor engine, the extent of custom fabrication required, the chosen components (transmission, wiring harness), the labor involved (DIY or professional), and unexpected issues encountered during the process. Expect significant investment; costs can easily reach tens of thousands of dollars.
What tools and equipment will I need for a 6.7 Cummins swap?
A comprehensive selection of tools and equipment is mandatory for a successful swap:
- Engine hoist: Essential for lifting and maneuvering the heavy 6.7 Cummins engine.
- Welding equipment: For custom fabrication of engine mounts and other components.
- Wiring tools: For working with the electrical systems.
- Specialized engine tools: For disconnecting and reconnecting various engine components.
- Torque wrench: For ensuring proper tightening of critical fasteners.
Where can I find a 6.7 Cummins engine for my swap?
Used 6.7 Cummins engines can be sourced from various places: salvage yards, online marketplaces (eBay, Craigslist), and specialized parts suppliers. Thoroughly inspect any engine before purchase to ensure it's in good working order. Consider a professional inspection for a high-value purchase.
This guide offers a high-level overview. The actual process involves far more intricate details and challenges. Before undertaking this ambitious project, extensive research, planning, and mechanical expertise are crucial. Remember, safety should always be your top priority. Consult experienced mechanics and utilize online forums for support and guidance throughout the process.
