Here is another example taken to the extreme.
here is the same exact combination of head flow, cam, compression, etc but I changed the bore and stroke to simulate a Caddy 500 engine. Notice it still makes the same exact HP, but look at what the extra cubes did to the torque and where the peaks happen.
In this case, adding the cubes won't add hp, but it does make for a super streetable package that only has to rev to 3500 RPMs to get the same performance as the 350 at 5000 rpms.
And do I even need to mention the additional
150 lb ft of torque at 1000 fewer RPMs 
Its no wonder people use Caddys for airboat engines
