Quote:
Originally Posted by TheTimanator
Pushrod engines are just old technology.
|
Overhead cams are older. Pushrod engines appeared in production cars after WW2. There were DOHC engines in cars as far back as the 1920's.
Putting the cam in the block makes more sense for a V engine in a production car than sticking 4 cams on top. It makes the engine dramatically lighter and smaller. They've got a 5.7L V8 that cam be punched out to 7.0L, that fits in the same space and weighs the same as a 3.5L DOHC V6. That's technology!
I'm not sure why more valve area is considered "high tech", but more cylinder volume is "low tech". They're two different ways to achieve the same goal - pumping as much air, and therefore making as much power, as possible. Both avenues to power have been explored since the first people started asking, "how can we make this thing go faster?"