there really is a means for big v8 downdraft to go to the 20s mpg. I miss most of my v8s. "They" (oem) did not let them have power, they did not let them fire completely, and their gearing was a chinese socialist in similarity (exactly perfectly power killing wrong..all while letting rpms and power curves happen anyway).
I could repeat history of my own past even better, any v8 I owned, as said, lock up convertor, fuel refining discipline of today, and some carb makers that have not given up, ignition alone is at least 5-10+ mpg with plugs and other tune up stuff...
but I still can't afford even 20s mpg...
not when there is 50.
