Eh...
The cost advantage between a pushrod and a overhead cam'd engine is debatable. Sure, the ONE engine may cost less, but if your entire line of automobiles (read: Toyota) have overhead cam engines, it will cost MORE to produce an entire NEW line of engines rather than just integrating the cam parts from your existing lines.
More power? Well... maybe...
Quote:
"Power is a function of airflow, pure and simple," says Winegarden. ... Four valves generally have greater total valve area than two, thus creating greater airflow and more power.
Doesn't really debunk OHC engines...
Ugh... and this?
Quote:
...Such an engine would be cheaper to build than the complex DOHC V-8 that's now in the Tundra pickup, and Toyota would also realize some marketing benefits from the huge racing investment. The irony is almost too sweet to imagine.
There's no "Win the race on Sunday, buy it on Monday" mentality in NASCAR (or NASTRUCK) like there is in, say, motorcycle racing.
Besides, Toyota is already has its racing investment in F1.
