Positive Aspects:
* Smooth Idle: A properly tuned 350 generally idles smoothly and quietly, especially at lower RPMs.
* Relatively Powerful: For its size and displacement, it provides decent horsepower and torque, making it relatively strong for acceleration and towing (depending on the specifics of the engine build).
* Torquey: It produces its power relatively low in the RPM range, meaning it has good pulling power at lower engine speeds. This makes it suitable for everyday driving and towing.
* Reliable: With proper maintenance, the 350 is known for its durability and longevity. Many have lasted hundreds of thousands of miles.
* Affordable: Parts are readily available and relatively inexpensive compared to some other engines. This makes maintenance and repairs more accessible.
Potential Negative Aspects (depending on condition and modifications):
* Fuel Consumption: It can be relatively thirsty compared to modern engines, particularly if not tuned properly or if modifications increase power significantly.
* Emissions: Older, unmodified 350s might not meet modern emission standards.
* Maintenance: While parts are affordable, regular maintenance is crucial to ensure longevity and optimal performance. Neglecting this can lead to significant problems.
* Noisy (when worn): As engines age, valve train noise (ticking), lifter noise, or other noises can become more prominent.
* Power Limitations (stock): While decent for its time, a completely stock 350 won't match the performance of modern engines of similar displacement.
In short, a well-maintained Chevy 350 small-block engine runs as a relatively smooth, powerful, and reliable engine, albeit a bit thirsty by modern standards. The actual running characteristics will vary greatly depending on its condition and any modifications it may have received. A highly modified 350 can be dramatically more powerful and aggressive, while a neglected one will be significantly less smooth and efficient.
