You guys are all talking about the catch phrase "Volumetric Efficiency". As displacement goes up, efficiency goes down. That 1.8L Honda Civic engine is only overcoming the rotating mass of 4 pistons, connecting rods etc. There are only 4 pistons creating friction with the cylinder walls etc etc etc. Add Cylinders and more bore/stroke and efficiency has to go down. There's just no two ways about it. The OP has ricer troll written all over him.