Is the 3.8 liter engine good?

Please provide more context! "Good" is subjective and depends on what you're looking for. To help me tell you if a 3.8 liter engine is good, please tell me:

* What kind of vehicle is it in? A 3.8 liter engine in a small car will be very different from one in a truck.

* What are you looking for in an engine? Do you prioritize power, fuel efficiency, reliability, or something else?

* What are your specific needs? Are you looking for a daily driver, a weekend warrior, or something else?

Once you give me more information, I can give you a more specific answer about whether or not a 3.8 liter engine is good for your needs.