Welcome to the forum. I wouldn't dare attack a vehicle because it's a V-8. My daughter has a '99 Trans-Am with a 350 / 6-speed. We drove it to the National Corvette Museum in November and challenged each other to maximize fuel economy. I drove up and we got 29.8 mpg @ ~60 / 65 mph. She drove back and got 29.4 @ about the same speeds. How did I beat her in her car? When we came back, she had heavy traffic in Nashville and before we got to the Alabama line, she had to turn on the (popup) headlights. Either way, a properly driven V-8 in the right vehicle can get reasonable economy. There are some great tips here. Enjoy the ride
