Fuel Economy..?

Back in the early to mid 70's I consistently got low 20's to as high as 25 mpg on a long trip. The car was a very plain 66 Coronet with a s6 and 3 on the tree, holley 1920. It was well worn, paid $360. That was back in the day of good gas, 75 mph speed limit, fewer stop lights. I lost a couple mpg when they dropped the speed limit to 55. I have always checked my milage at every fillup, good habit. Drive like you are in a hurry. Do not warm a car up.

Tricks for milage, taller air cleaner filter, CDI ignition, advance timing, 195 thermostat, perfect alignment, 60 series tires on the rear.