Boy that great fuel compared to my first truck (1973 model) that barely got 5 mpg highway. No wonder I had two 30 gallon saddle tanks and a 15 gal reserve tank. Boy those tanks came in handy during the early 80's gas shortage. Retire it when I got a 1967 Chrysler 300 with 440 engine which I had getting around 25 mpg highway when I sold it. Not bad for Holley 4 barrel. Just didn't floorboard it much as the tank tried to imploded.I should have sent you my 1990 gmc pickup. 1 ton with 350 engine with TH400 trans without lockup and 3.73 gears. Terrible year for engines. 9 MPG empty or with a 2000 lb camper in the bed and towing a boat.
I just wish I could work with these new electronic controls as the 2000 is only getting 17 MPG combined. But EPA has ban about everything that I used to increase the fuel economy now. But I still looking for a mild racing cam and a set of variable duration lifters. I still couldn't tear down the engine even I had the parts as it is my only vehicle at the current time.