If price was not a consideration, Gas or Diesel?

pnichols wrote:
I wonder when (if ever) trucks are going to have solenoid operated valves?

Closing both intake and exhuast valves automatically whenever needed on downgrades would probably provide very powerful compression braking in gas engines.

Even in build for high pressure 6l Powerstroke the cylinder pressure could lift the heads in extreme situations.
I can only imagine what that idea would do to gasoline heads who were never intended for high pressure.