[asphaltgambler]

I think there is still a lot of development left in a good 'ol' 'merican basic V-8 engine. I remember some TV anchor quizing a GM exec why they were still using dated push-rod valvetrain engines when the rest of the automotive world was 4- cam, 4-5 valves per cyl, etc.

His response was the current GM engine's are proven, cost effective and have as much or more torque as their complex counterparts with same displacement. Torque is what moves the vehicle down the road. That said we are working to further refine those designs for increased power and fuel efficiency.

This was circa early 90's - to a large extent I think he was spot on. Look at the current LT / LS 6.2 engine as an example.