Relatively Easy (with some work):
* Other 2.2L engines: Different years of the 2.2L (even from different GM vehicles) might bolt in with minimal fuss. However, you'll need to check the specifics of the year and model of the donor engine to ensure compatibility with your existing wiring harness, transmission, and mounting points. This is the simplest swap.
Moderate Difficulty (significant modification required):
* 4-cylinder engines from other GM vehicles: Some 4-cylinder engines from other GM platforms (like the Ecotec series, found in various Cavaliers and Sunfires) *might* fit, but would require significant fabrication of mounts, and likely a new wiring harness and computer. You'd be looking at a considerable amount of custom work.
Difficult to Near Impossible (major fabrication and custom work):
* V6 engines: V6 engines are significantly larger and heavier than the 2.2L. Fitting one would require extensive modifications to the engine bay, including custom engine mounts, potentially firewall modifications, and likely a new transmission, driveshaft, and extensive wiring work. This is a very significant undertaking.
* V8 engines: A V8 is almost certainly not going to fit without extreme and potentially unsafe modifications to the chassis. The frame and suspension would likely need major reinforcement, not to mention significant bodywork changes. This is generally not a practical swap.
Important Considerations:
* Transmission: You'll need a transmission compatible with your chosen engine. Simply bolting a different engine to your existing transmission is unlikely to work.
* Wiring Harness and Computer: You'll likely need a new wiring harness and computer (ECU) that is compatible with the new engine.
* Exhaust System: The exhaust system will need to be modified or replaced to accommodate the new engine.
* Cooling System: The cooling system may need to be upgraded to handle the new engine's heat output.
* Legal Issues: Make sure any modifications comply with your local laws and regulations.
Before undertaking any engine swap, thoroughly research the specific engine you are considering and weigh the complexity and cost of the project. A simple swap of another 2.2L is far different than attempting a V6 or V8 installation. You will likely need professional assistance for anything beyond a similar 2.2L replacement.
