The reason I was asking is because I just finished up my car after several years and this fall has been the first time I’ve really driven it. It is a 440 4bbl cuda. I have only been thru one tank of gas. I just couldn’t believe the gas gauge and assumed the sending unit was off since the gauges have all been gone thru. Well, the gas gauge wasn’t too far off. Once it hit empty, it ran out within 20 miles or so. It had maybe 30 minutes of idle time on that tank and only 125 miles! Does that sound right? Less than 7 mpg!! Hopefully once it’s broke in, and maybe some carb adjustments, it will get better? This will sure limit me on how far away from home I will want to take it………