Assuming everything else is constant...
Bore will also affect how well the mixture burns, as long as the bore doesn't limit the flame propagation and expansion of the mixture....
Larger bore than stroke will help the engine rev faster, but longer stroke will develope more stroke on the same bore... It's a balance between bore vs stroke... It would be interesting to build identical 340 vs 360 and race them against each other to see how the bore vs stroke affects the output....
My engine professor taught us that the most desireable bore to stroke ratio is 1.2 bore vs stroke...
