* Engine Code Differences: The 1987 Supra likely had a 7M-GE engine, while the 1988 Supra could have either a 7M-GE or a 7M-GTE. These engines have different internal components, wiring harnesses, and even mounting points.
* Transmission Compatibility: The transmissions paired with these engines may not be interchangeable. The 1988 Supra could have a more advanced transmission with electronic controls that might not be compatible with the 1987 system.
* Electronics: The 1988 Supra likely had a more advanced electronic control unit (ECU) and wiring harness. Trying to marry the 1988 engine to the 1987 system could lead to compatibility issues.
* Mounting Points: Even if the engine physically fits, the mounting points and accessories (like the alternator, power steering pump, etc.) might be incompatible between the two years.
What you could do:
* Research Specific Models: Determine the exact engine codes for both your 1987 and 1988 Supras. Find out the specific model years for each engine to ensure compatibility.
* Consult a Mechanic: A knowledgeable mechanic can assess the feasibility of the swap and identify the potential challenges and necessary modifications.
* Focus on Upgrades: Instead of a direct swap, consider upgrading the 1987 Supra's existing engine with performance parts or finding a compatible engine from a later-model Supra.
Important Note:
Swapping engines can be complex and requires significant mechanical expertise. If you're not experienced with this type of work, it's best to seek professional help.
