I am getting about 14 MPG with my 350/3 speed/ 3:73 combo. At 60 mph I am hovering around 3000 rpm. The truck isn't a highway cruiser so the 3:73 works great for me. I will find out i June how it does on the highway when we travel 1 hour and 20 minutes to the neighbouring town for their car show. Gonna be white knuckled all the way there and back
