If they both live at 6000ft above sea level then they will both be affected by atmospheric conditions equally.
stroked 318 vs overbored 340 is a good topic for a new thread. :D[/QUO
Hey let's here what everybody got to say !!
I'm not stopping anyone from having their say, but I think that when it comes to changing bore/stroke ratio you also end up changing rod/stroke ratio, bearing diameters. rod length/weight, skirt length, piston weight, valve shroud etc etc it gets very involved and it would easily warrant it's own thread.
This thread was originally about comparing a smaller motor to a bigger motor and that is a LOT more cut and dry, If you have two identical motors and you stroke one of them to increase it's displacement it will make more torque. Period.