Have no doubt I did a lot of math before going to the Hemi from the Cummins. Comparing HP in each engine's normal rpm range and torque multiplied through overall gear ratios put the Hemi slightly ahead of the SO Cummins at close to sea level. It played out on paper and to my satisfaction, played out on the road with the first trip out almost exactly as predicted. So it was first a theory based on advertised horsepower and torque, then experience that proved it lives up to the hype. If not, I haven't been banned from owning another diesel. It's just an engine, not a deity. At this point in life I simply prefer the quiet one that can rev.
