My question is built engine even ones operating in higher rpm bands seem to make more than enough low end tq/hp 1500-3500 rpm generally more than stock why some are soft down low? Generally people go on about torque but I've noticing lately most of these engines make good low end torque more than enough they shouldn't be a dog down low. So my guess it would probably overlap or some other cam spec but not exactly sure why? but doesn't seem to me be a torque/hp problem.