* Similar Platform: The 1984 Cutlass Supreme and 1985 Buick Regal were built on the same GM A-body platform. This means they share a lot of common components and dimensions.
* Engine Compatibility: The V6 engines in these cars were mostly interchangeable. The main difference could be in the specific model of V6 (e.g., 2.8L vs 3.8L), but you can usually adapt the engine mounts and accessories to fit.
* Transmission Compatibility: The 3-speed automatic transmissions in these cars were also very similar. Again, you might need to make adjustments to the mounting points or linkage, but it should be feasible.
* Wiring Harness: The wiring harnesses are likely to be very similar. However, you will need to carefully compare the wiring diagrams and make any necessary modifications.
Important Considerations:
* Year-Specific Differences: There might be minor differences in the engine mounts, wiring harness connectors, or other components between the 1984 Cutlass Supreme and the 1985 Regal.
* Compatibility Research: Before undertaking the swap, thoroughly research the specific engine and transmission models you are working with. Compare the engine codes and transmission codes to see if they are truly compatible.
* Professional Assistance: If you are not confident in your mechanical abilities, it's recommended to seek the help of a qualified mechanic to perform this swap.
In short, the swap is likely possible, but it's essential to do your research, plan carefully, and be prepared for some modifications.
