* Engine Mounts: While the engine block itself might fit in the engine bay, the engine mounts are likely different between the years. You'll probably need to use engine mounts from a later model Chevy (potentially a 1993) or fabricate custom mounts.
* Transmission: The transmission compatibility depends on the specific transmissions in both vehicles. A direct swap isn't guaranteed. You might need an adapter plate or a different transmission altogether.
* Wiring Harness and Computer: The 1993 350 likely uses a different computer system and wiring harness than the 1987. You'll likely need to replace the wiring harness and possibly the entire computer system, or at least significantly modify the existing wiring. This is often the most complex aspect of the swap.
* Exhaust System: The exhaust manifolds or headers will likely need modification or replacement as they won't directly bolt up.
* Other Accessories: Power steering, alternator, and other accessories might require modification or replacement depending on mounting points and connections.
In summary, while physically possible, it's a significant undertaking requiring mechanical expertise and likely custom fabrication. It's not a simple "drop-in" replacement. You should consult with experienced mechanics or engine swap specialists before attempting this.
