Can a 350 Car Engine Go in a Boat?

Yes, it is possible to put a 350 car engine in a boat. However, there are a few things to consider before doing so.

Engine Modifications

Car engines are not designed to operate in a marine environment, so some modifications will be necessary to make it suitable for use in a boat.

Cooling system: Car engines are typically cooled by a radiator and fan, which is not suitable for use in a boat. A marine engine cooling system uses a raw water pump to circulate water from the lake or river through the engine, and then out through the exhaust.
Ignition system: Car engines use a distributor to distribute spark to the spark plugs. Marine engines use a more robust ignition system that is less likely to fail in a wet environment.
Carburetor or fuel injection: Car engines typically use a carburetor to mix fuel and air, while marine engines use fuel injection. Fuel injection is more reliable and efficient in a marine environment.
Exhaust system: Car engines typically use a muffler to reduce noise, while marine engines use a wet exhaust system that discharges exhaust below the waterline.

Boat Modifications

In addition to the engine modifications, the boat will also need to be modified to accommodate the engine.

Engine mount: The boat will need to have a suitable engine mount to support the weight of the engine.
Transmission: The boat will need to have a transmission that is compatible with the engine.
Propeller: The boat will need to have a propeller that is sized appropriately for the engine.

Safety Considerations

It is important to note that putting a car engine in a boat can be a dangerous undertaking if it is not done properly. There are several safety considerations that must be taken into account:

Fuel system: The fuel system must be properly sealed to prevent leaks.
Electrical system: The electrical system must be properly insulated to prevent shocks.
Exhaust system: The exhaust system must be properly vented to prevent carbon monoxide poisoning.

Conclusion

It is possible to put a 350 car engine in a boat, but it is important to understand the modifications that will be necessary and the safety considerations that must be taken into account. If you are not comfortable making these modifications yourself, it is best to have them done by a qualified mechanic.