When everything else is the same how does the number of cylinders affect a car's performance, durability, fuel consumption, drivability, and emissions? In others words, what are the differences between a 600 cubic inch displacement V8 and a 600 cubic inch displacement V12?
The more cylinders make the engine smoother. The pistons are smaller and the engine can turn higher revolutions. Any engine is a air pump. If you can push more air through it (with fuel added), you get more power out.