eli5 why trucks don’t use small displacement high revving engines

Question

Like, you see cars like ferrari making absurd power figures with small block engines, like a 4 liter making 800hp. Is it just a cost thing that they would rather use a 10 liter? It makes the same power, and thanks to the transmission it’ll get the same torque at the wheel.

In: 3

Answer 1

The engines they need require torque. A horsepower rating at high rpm is great, if you can get the vehicle to move and up to a speed that can maintain that rpm. You need torque to get stuff to move and the high HP small engine will not be able to pull it off the hop.