I just don't see it man! Haha my buddy rebuilt a 360. Edelbrock 650. 10:1. Iron heads. XE268H. Fairly similar to this magazine. And he made a 385 horse and 420 pound feet of torque if I recall (several years ago now). So I believe they are fairly close to the mark. Although another dyno may disagree completely. That and I have a tendency to wanna trust Dulcich. Guy has been around in the mopar world for years.