No Replacement for Displacement (myth or fact)

Yes effiency in design, however turbos are a great equalizer. Import crowd loves em. And this is a catch 22. Reason being that u can take a 2.0 liter displacement 4 banger and give it v8 horsepower, but since its only displacing 2.0 liters u can only boost it so much. Take 5 liter v8 apply the same ideas and get double the power of the boosted 2.0 liter. Or more if using a bigger v8.

Hotrodders have now figured out that 2 turbos on a v8 and a big intercooler equals big power.the big block twin turbo chevelle that was in hot rod magazine a year back thats street driven 900 hp low boost and 1300 hp high boost is a testament to this. Turbo engines use dished pistons, and have low static compression. This is why they idle and drive very docile until you hit the loud pedal.

So i would have to say, there is no replacement for displacement, unless you are using some sort of forced air induction. Be it a supercharger or a turbocharger. Turbos are more efficient in design since they use exhaust power to operate, however nothing looks cooler than a polished roots blower popping thru the hood.

My bet on horsepower would be on a twin turbo boosted 318 over a naturally aspirated 426 hemi. But twin turbo the hemi and its game over for the 318.