got to love the way these threads go off topic lol

to make power you need a volume of fuel air mix, and a number of them ina time period.

Either bigger bang or more bangs. For more bangs, look to bike engines, f1 engines etc etc which rev really high. For bigger bangs, FI is the way to go. cosworth commented years ago that in the new age of forced induction, it would be bottom end strength, not capacity that limited outright power.

for qa gievn capacity you have a certain amount of space for bearing surfaces, rod cross section etc etc.

so basically, there is no relationship directly, you just need more boost on the smaller engine.

If you want to keep the cylinder pressures the same, then youre back at the start