However, you need to consider:
* Engine Mounts: You'll need the correct engine mounts for a 350. The mounts from a Caprice that originally had a 350 would be ideal. Using incorrect mounts can lead to vibration and potential damage.
* Transmission: You'll need a compatible transmission and its associated components. The transmission bellhousing must match the engine block. You'll need to use a transmission appropriate for the 350.
* Wiring Harness: The wiring harness may need modification or replacement to accommodate the 350. The original harness may not match the configuration of your new 350.
* Exhaust System: The exhaust system will likely need to be modified or replaced to fit the 350.
* Accessories: Power steering, alternator, etc., will need to be compatible with your chosen 350 and mounted correctly.
In short, while it *fits*, it's not a simple bolt-in swap. Significant mechanical work is required, potentially involving fabrication or professional help. You'll need to ensure all the supporting systems are compatible and properly installed to avoid issues.