Yes, a 4 cyl gas engine in a full sized truck. video 310hp @ 5600 RPM and 348tq @ 1500 RPM Compare that to my last GM truck, an 06 with a 5.3L which was what.....305hp/335tq? Wow.
Watch this video starting at 2:50 as it show's how the cam slide to change to a different cam lobe. Also the cams are a two piece design that can adjust cam lobe on two cylinders or four cylinders.