Not to hijack...but seeing this reminded me of a claim I saw years ago....that "v" engines are inherently more torquey than inlines.....any documented proof? Sorry for the hijack, now back to your regularly scheduled programming....
That's why the old Mopar Flathead 6 was so popular and was produced all the way into the late 1970's (even after it had been replaced the Poly/LA/B/RB/Hemi/Slant 6). They only produced between 80 and 200hp at 3,600 RPM... Yet at the same time they produced their max torque (numbers varied greatly depending on engine size/application) at 1,600 RPM. YES 1,600 RPM, that's roughly 400 - 600 rpm above idle.
That's diesel type torque (in terms of rpm) out of an engine design that is 80+ years old. And is the reason they were still manufactured into the 70's for Industrial Applications.