Originally Posted by
iheartbacon
Not really. I'm talking about a 3/4 ton 4x4 pick up with a 460 cubic inch gasoline V-8. Those things move some fuel. Diesel pick ups used to get in the high teens, low twenties highway. The newer diesels don't, they get much worse mileage.
I have a coworker with a Chevy SS Truck with a 454 that gets over ten mpg when not towing his barbeque grill. I suppose each person will get different mileage depending upon driving conditions.
Years ago I read an article in a Cars Magazine. They took a 76 Malibu with a 454 and put high mileage parts in it. They switched the cam, the manifold, and worked on the carburetor. It went from twelve mpg to sixteen in the city. This was before computers ran everything.