What mileage does your slant six powered ride get?

I have a friend with a stock slant in a early 40's Dodge coupe with a 4:10 rear gear, tall tires and a o/d 4 speed that gets 26. Strange combo I know.
Not to crap on your parade but that’s with an overdrive and the final ratio is what?
2.82 w/a .69 OD ratio? No wait, manual, it’s higher right?

Where are the guys that claim 30, 35, 37+ mpg’s?

For the OP, that’s what I got out of mine and I promptly dumped it for a 318.