I know in the last 30 years turbos and superchargers have made it easier to make power, but I always hear about huge 7 or 8 liter engines made in the 70s or earlier, that will make like 200 hp at best. How is it possible to get so little out of so much displacement?
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The ECU.
The fuel mapping is something that just wasn’t possible to the same degree with carburetors. We can really control the combustion to create that nice even burn (I forgot the term for it, wavefront, I think) that pushes the piston down with even power.
Add variable valve timing, smart turbochargers, 4 valve designs (2 intake, 2 exhaust), direct injection (shoot the fuel directly into the combustion chamber), and you can wring a lot of power out of smaller engines. Eventually we will talk about running water injection!
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