The 3rd gen Coyote is the pinnacle of the mod motor architecture, its true that there's nowhere else for them to take it. A divergence of the 7.3 would be cheaper and easier, yes. All the boxes for WHY are checked, but I can't fathom HOW they can justify it. Even with tricks like cylinder deactivation, it's still going to be almost impossible to get close to the same gas mileage that the coyote does with all its trick cam profiles and efficiency. Sure, that won't matter for the owners, but it sure matters to a large company like Ford that would be running this as a volume, bread and butter engine in the F150 and the Mustang GT. Unless they're just wagering that their electric models will offset the CAFE average murder.Money. A pushrod engine is cheaper to produce. Half the cams, half the valves, half the chains,and of course all the machine work that goes into those extra parts. If they are using the 7.3 casting the development cost is already sunk.
The coyote as much as I love it is about tapped out. Getting from 412 to 480 was cheap. To go from 480 to 548 would cost many times more.
Ford is changing/changed CEOs. They haven’t been making money like they should have been and I expect big changes on the horizon. Dodge has been killing it with their very old design cars with big engines and lots of torque. I expect ford has taken notice.