All things being equal, the 360 just don't offer more low-end torque, it offers more HP at the upper RPM's as well. I love all the mopar small blocks. The 318 is going to need a little more gears, stall, and rpm's to run with a 360. And that means it's less motor. That being said, if ya got a 318 and want to build it, by all means do it! I have, I am, and I will. But I've also pulled a lot of 318's to put in 360's. Including a couple of cars I have now.