A roller cam 302 (94 or later) with efi, headers and an overdrive manual trans behind it wouldn't be a terrible thing to do to that truck, if there would be room for the trans between the divorced t-case and the engine.
but, we aint doing any of that right now.
When I drive this truck I can get 12 mpg with it.
when a boy drives this truck it's 8 to 10 mph because most of the run time on the engine is idling for hours in a convenience store parking lot or other kid hang out areas.
My run time is where the rotation of the crank is harnessed for propelling the truck down the road, for transporting me and my items from point A to point B.
Young people just like to let the engine run, for no other reason than to complain about fuel mileage.
