Ernie,
Lucky you have 2 carbs on it, if you only had one you'd be about
4 mpg!
I am just short of 80 mph at 2,000 rpm in 5th on my Tremec, even with
that my average is about 13 mpg over all and I don't crank all the
time to say the least, mainly freeway runs to the north shore, and with
the emphasis on laser guns by our finast lately, at reasonable speeds.
Some fine tuning is in order I'm sure.