Engine and Related Components:
* The 5.7L Hemi Engine: Obviously, this is the centerpiece of the swap. Make sure it's the correct year and model to match your truck's computer system (ECU).
* Engine Mounts: The 5.7L Hemi has different engine mounts than the 4.7L. These will need to be replaced.
* Exhaust Manifolds and Exhaust System: The 5.7L's exhaust system is different and won't fit the 4.7L's. You'll likely need new manifolds and at least part of the exhaust system.
* Transmission: Depending on the year of your truck and the 5.7L donor engine, you *might* be able to use your existing transmission. However, it's more likely that you'll need a transmission compatible with the 5.7L (likely a 46RE or 545RFE automatic, depending on the year). This involves a complete swap, including torque converter and associated parts.
* Wiring Harness: The wiring harness for the 4.7L is different from the 5.7L. You'll likely need a 5.7L harness, or extensive rewiring. This is a complex task requiring significant electrical knowledge.
* Computer (PCM/ECU): The 4.7L's computer won't be compatible. You'll need the correct PCM/ECU for the 5.7L engine year and model. This will likely require programming or flashing to match your truck's VIN.
* Sensors: Various sensors (oxygen, crankshaft, camshaft, etc.) are different and need to be swapped.
* Throttle Body: The throttle body and related components are likely different.
* Alternator and Power Steering Pump: These might be different and might need to be replaced.
* Air Intake System: You'll need an air intake system suitable for the 5.7L.
Other Considerations:
* Driveshaft: Depending on the transmission choice, the driveshaft might need to be modified or replaced.
* Cooling System: The radiator and cooling system may need to be upgraded to handle the larger engine's heat output.
* Fuel System: The fuel injectors and fuel pump might need adjusting or replacing to match the 5.7L's requirements.
* Programming and Calibration: Getting the new engine, transmission, and PCM to work together requires proper programming and calibration. This often requires specialized tools and knowledge.
* Labor: This is a very involved project. Unless you have significant mechanical and electrical experience, you'll likely need professional help.
In short: It's not a simple bolt-on swap. This is a major engine swap that requires a deep understanding of automotive mechanics and electronics. It's best left to experienced mechanics unless you have a considerable amount of experience with engine swaps. The cost of parts and labor could easily exceed the cost of buying a truck with a 5.7L already installed.
