Daily Driver.. LA318 vs 360 Magnum

The best "non modern" MPG I've gotten in a small block was about 22 average with a light almost no option 67 Coronet (no AC, manual steering) and it's bone stock (but carefully tuned) 68,000 mile 9.2:1 318-2 single exhaust automatic. It combusted so efficiently, it actually dripped clean water from the tail pipe, and idled so smoothly, you could balance a pen upright on the air cleaner. I believe it had 2.94 gears.