360View, I crunched some numbers real quick...

Assuming a 4" stroker (), at 1700 rpms the piston speed is 1133 ft/sec, right in the sweet spot of that graph.

Assuming a BMEP of 100 psi, we can figure the needed torque to be roughly 275 ft-lbs, at that 1700 RPMs. bmep link

So, does it make sense that if we build an engine with that amount of torque at that rpm, adjust the rest of the gearing as needed to get a good highway speed at that rpm, that we should get the optimal mileage out of it?

Of course, depending on the air & rolling resistance, I guess we may still need more power to move along though...

Or am I way off