Point/Counterpoint: DOHC v OHV

[mike100]

Originally Posted by spork2367

...Chevy will likely never build an engine that we think would be comparable to the LT5.

They will be forced to someday by emissions laws. It helps to have two cams per head that can phase exhaust and intake separately to control overlap and therefor cylinder pressure. There has been some though of the camshaft going extinct if some kind of electrically actuated valve technology ever becomes reliable. This will make the argument on how many valves per cylinder rather than cams, but I would venture that the lighter the valve, the better.

Some of this tech will probably preclude engines from going much over 6000 rpm, but if you are torque blending with an electric assist, stored mechanical energy (like KERS), turbos, and all of this, why would you need high rpm? VW used to make a supercharged and turbocharged engine in a very small displacement, but stopped due to costs I think. The days of big inch lumbering NA engines are not long. Maybe in trucks for a bit longer...