1. Engine Mounts: The 1988 and 1997 engine mounts likely won't be interchangeable. You'll need engine mounts specifically designed for a 350 in your 1997 chassis. These might be readily available aftermarket parts or require custom fabrication.
2. Transmission: This is a significant consideration.
* Automatic: If the 1997 vehicle had an automatic transmission, you'll need to determine compatibility. The bellhousing bolt pattern on the 1988 350's block may differ from the 1997 transmission. You might need a different flexplate or flywheel and potentially an adapter. The transmission itself might also need to be compatible with the 350's torque.
* Manual: If a manual transmission was original, the same considerations apply regarding bellhousing and clutch compatibility.
3. Wiring Harness: The 1988 engine's wiring harness is unlikely to be compatible with the 1997 vehicle's computer system. You'll likely need a custom harness or significant rewiring. This is potentially the most complex aspect of the swap. You might need to adapt the 1988 harness or use a standalone engine management system (Megasquirt, for example).
4. Exhaust System: The exhaust manifolds or headers from the 1988 350 probably won't fit the 1997 vehicle. You'll need a new exhaust system designed for a 350 in that chassis.
5. Cooling System: The radiator and hoses might need to be changed or adapted to handle the potentially higher heat output of the 350.
6. Computer/ECU: The 1997 computer system might not be compatible with the 1988 engine. You might need a standalone engine management system or a custom tuned ECU.
7. Fuel System: The fuel injectors, fuel pump, and fuel lines might need to be updated to accommodate the 350's fuel requirements. The fuel pressure regulator may need modification or replacement.
8. Drive Shaft: The drive shaft length may need to be adjusted or replaced to accommodate the different engine and transmission combination.
9. Accessories: Consider the power steering pump, alternator, and AC compressor. Their brackets and mounting points might be different and require modification or replacement.
In short: This is a major engine swap requiring mechanical expertise, specialized tools, and likely significant fabrication and custom work. Without knowing the specific make and model of the 1997 vehicle, providing a more precise list of parts is impossible. You should consult forums and online resources specific to your vehicle model for detailed instructions and compatibility information. Professional help from a mechanic experienced in engine swaps is highly recommended.
