I've had several 318's and 360's. Always impressed with the power of the 360's I've had. Actually very impressed. Mileage worse than a 318? Yes, but over 40 more cubic inches. I've had two Mopar Performance Magnum 360's that were very fast torquey engines, and with 2.94 gears in a 3800 pound car the mileage was VERY reasonable. My Aspen has the factory E58. I am very happy with the performance and love driving it. Mileage is low with the thermoquad and it's hard to keep my foot out of it, but again, it's over 40 cubes bigger than a 318.

The ONLY con I would put on the 360 versus the 318 is the external balance vs. internal. The perfect smallblock in my mind is a built, internally balanced 360.