350 GM:
* GM refers to General Motors, the manufacturer of the engine.
* 350 refers to the approximate cubic inch displacement of the engine. This is a common displacement used in many GM V8 engines.
5.7 MerCruiser:
* MerCruiser refers to a brand of marine engines, often based on GM engine technology. They're specifically designed for use in boats.
* 5.7 refers to the approximate liter displacement of the engine (5.7 liters is very close to 350 cubic inches).
Therefore, a "350 gm" and a "5.7 MerCruiser" are essentially the same engine: a V8 gasoline engine with a displacement of approximately 350 cubic inches (or 5.7 liters). The main difference is the intended application:
* "350 gm" generally refers to a standard GM engine, which can be used in various applications, including cars, trucks, and even some boats.
* "5.7 MerCruiser" refers to a marine engine, which is specifically designed for use in boats. It features adaptations for saltwater environments, marine-grade components, and often has a higher power output tailored for marine applications.
To summarize: You might find a "350 GM" engine used in a boat, but it wouldn't be a "MerCruiser" unless it has been specifically adapted and branded as such.
