Yes. I owned a ‘66 396 rat motor Chevy. It got 8 miles to the gallon of premium gasoline.
You were doing well!
What model? Corvette, Chevelle, or land yacht?
“It got 8 miles to the gallon of premium gasoline.”
LOL
I got about the same mpg in my Plymouth GTX with 440 cid engine, and that was when I kept my foot out of it.
Can you imagine the cost of feeding those beasts today?