I might be trading my streetbike with a guy for his 86 Chevy Silverado 4x4. The truck has 33" tires, 350 engine, bulldog 4spd transmission. I'm not sure of the gear ratio, but I don't think he has changed it and the truck is not lifted. The motor is carb'ed. I'm just curious what kind of fuel mileage I might expect to get out of this truck.