The Task Force Chevys are as aerodynamic as a brick. I will call bs on anyone who claims 20 plus mpg at freeway speeds using a carb.
I'm running a 350, comp cam, flat tops, double hump heads, etc, with a 4 speed and 3.38 rear. I get 24 mpg consistantly.
About 14 on the highway and 10 in town, that's 24 right?