Either the b-body has a massive filler neck or the fuel capacity is wrong. I filled my with 25, almost 26, gallons after I accidentally ran it dry cause of a bad fuel gauge. I doubt the filler can hold almost 3 gallons. Anyway, I cried when I recently sold my caprice. The car could literally do anything. The gas mileage was amazing too. my record was between 650 and 700 miles in a tank on that car. That was non stop at highway speeds with a fairly level grade. Had I been single I would of sold my Yukon and kept the Caprice. When I come back stateside you can bet your ass I will find another one.