I. Planning and Acquisition:
1. Engine and Transmission: Source a complete 350 TPI engine and transmission (likely a 700R4 automatic or a T5 manual). Ensure the engine is in good running condition or at least rebuildable. Consider the condition of the engine's accessories (alternator, power steering pump, etc.). These might need refurbishment or replacement.
2. Wiring Harness: You'll need the complete wiring harness from a donor car with the 350 TPI setup. This is crucial for the TPI system to function correctly. Modifying the existing harness is possible but significantly more complex.
3. Computer (ECM): The engine control module (ECM) from the donor car is essential. You might need to have it professionally tuned or reprogrammed to match your specific setup.
4. Exhaust System: The 2.8L exhaust won't fit the 350. You'll need a new exhaust system, including headers, or adapt the existing system (challenging and may negatively impact performance).
5. Mounts and Brackets: The 350 is considerably larger than the 2.8L. You'll need engine mounts designed for the 350 in a third-gen F-body. These are usually aftermarket parts. You'll also need to source or fabricate brackets for various accessories.
6. Driveshaft: The driveshaft will likely need to be shortened or replaced to accommodate the different transmission length.
7. Cooling System: The 350 generates significantly more heat. You might need a larger radiator, a higher-capacity cooling fan, and potentially an upgraded water pump.
II. The Swap Itself:
1. Removal of the 2.8L Engine and Transmission: This involves disconnecting all the components, removing the engine and transmission mounts, and carefully lifting out the engine/transmission assembly.
2. Installation of the 350 Engine and Transmission: Install the new engine mounts, position the 350, and bolt it in place. Connect the transmission.
3. Wiring: This is arguably the most challenging part. You'll need to carefully route and connect the 350 TPI harness, integrating it with the car's existing wiring. This usually requires extensive knowledge of automotive electrical systems.
4. Fuel System: The 350 TPI requires a different fuel system than the 2.8L. You'll likely need to adapt or replace fuel lines, the fuel pump, and possibly the fuel tank.
5. Exhaust System Installation: Install the new or modified exhaust system.
6. Cooling System Installation: Install the upgraded radiator, fan, and water pump.
7. Driveshaft Installation: Install the correct-length driveshaft.
8. Final Assembly: Connect all remaining components, including accessories like the alternator, power steering pump, and air conditioning compressor.
III. Testing and Tuning:
1. Initial Startup: After the swap is complete, start the engine and check for leaks, unusual noises, and proper functionality of all components.
2. Tuning: You'll likely need to have the ECM tuned or reprogrammed to optimize the engine's performance and ensure proper operation. A professional tuner is recommended.
Important Considerations:
* Safety: Engine swaps are complex and potentially dangerous. Use jack stands, follow proper safety procedures, and consider professional help if you lack experience.
* Legality: Check your local regulations regarding engine swaps and emissions compliance.
* Budget: Engine swaps are expensive. Factor in the cost of parts, tools, professional help (if needed), and potential unforeseen issues.
This is a highly summarized overview. A detailed guide would be far more extensive, possibly spanning hundreds of pages. You should consult detailed engine swap guides and manuals specific to the 1989 Camaro and the 350 TPI engine before attempting this project. There are numerous online forums and resources dedicated to third-gen Camaro swaps that can provide invaluable information and support. If you lack significant mechanical experience, it's strongly recommended you seek the assistance of a professional mechanic.
