318 vs 340 Questions

One thing to keep in mind is, if fuel mileage in part of your goal, the smaller bore on the 318 will really win out. Even a stroked 318 will get better mileage than a stock stroke 360 if it's a mild build, because of the smaller bore.

If your power goals are no more than around 350 HP then I would stick with the 318 all day long.