Hi All: I'm trying to figure out the maximum range of my 1974 Duster. My car is bone stock with the 225 six and Holley one barrel carb. Entire fuel system, including the new 16 gallon tank and rebuilt sending unit, is all stock. I get about 14.5 to 15.0 MPG at 70 MPH in highway cruising. I've also installed and calibrated a Meter Match electronic fuel gauge calibration unit, which seems to be working well. The advertised capacity of the fuel tank is 16 gallons. When I'm at exactly half full...
What's the absolute max useable fuel in a Duster?
