Hemi shouldn't be anymore to rebuild than any other motor, it isn't an exotic engine by any stretch. People are charging for a complete rebuild when a lifter goes because that way they can put a longer warranty on it.
There isn't any F150 motor that gets double the mpg (other than a diesel) of the hemi. When towing using the ecoboost motors, they certainly aren't getting good mpg either and certainly not twice the mpg of the V8's - can't cheat physics.
I can’t say I’ve ever worked out the mpg. But I know my fuel bill isn’t lying to me.
I guess people get sore over peoples real world experience.
As I’ve said in other posts. I’ve owned 15,17 and 19 ram with 5.7
Also we have owned 17,19,21 f150s
17 was a 5.0 19 was a 2.7 and 21 is 3.5
So I guess I’m just cheating physics
And Hemi and ford motors are both big $
Problem with hemis is every one is going to have top end issues that hasn’t changed and never will.