Challenges and Considerations:
* Engine Mounts: While both engines are LA-series small-blocks, the exact mounting points *might* be slightly different. You might need to use different engine mounts, or modify existing ones to ensure proper fitment. This is the biggest potential hurdle.
* Transmission: The transmission compatibility depends on the specific year and model of your vehicle and the 318 you're using. A direct bolt-up is likely, but you should verify bellhousing patterns.
* Exhaust System: The exhaust manifolds or headers will likely need to be changed, as the 318 and 360 have different exhaust port locations.
* Wiring Harness: The wiring harnesses are probably different. You'll likely need to adapt the wiring harness to accommodate the 318's sensors and components, or use a harness specifically designed for a 318 in your vehicle year.
* Computer/ECU: The computer controlling the engine will need to be compatible with the 318. This might involve swapping ECUs or doing some custom wiring work. Carbureted systems are simpler in this regard.
* Performance: The 318 is smaller and less powerful than the 360. Expect a noticeable reduction in horsepower and torque.
* Accessories: Consider the alternator, power steering pump, and A/C compressor. They might bolt up directly, or require adapters or replacements.
In short: It's *possible*, but it's not a simple bolt-in swap. You'll likely need mechanical aptitude, some fabrication skills, and potentially access to specialized tools and parts. Thorough research into the specific year and model of both your vehicle and the donor 318 engine is absolutely essential before attempting this swap.
If you lack experience with engine swaps, it's highly recommended to seek the assistance of a qualified mechanic.
