I stand by my statement about (IN THE PAST) ohv engines vs. ohc.
In many cases ohv are lower revving they also in many cases produce more total torque than total horsepower. I know of very few normally aspirated ohc engines that can make that claim...
Ohc engines generally will rev higher producing more peak horsepower, but do not generally produce as much torque at low rpms.
A good example of these normally aspirated ohv engines are my favorite Pontiacs.
Like some of the versions Butler performance builds- the basic 455 cu producing 580 hp 625 ft. lbs. also average torque far exceeds average horsepower.
Many ohv engines produced more average torque than horsepower.
If ohc head designs produce as much or more low end torque, you would think they would be in use on more than half the diesel tractor engines and over the road diesels.. I believe its all about low end torque...
I maintain that in general - in the past normally aspirated ohv engines produce more low end torque than ohc engines
