That’s an ‘89 Dodge Ram 250. The Ram Pickup is a line of trucks that’s been in production since October of 1980 (the first model year was 1981). This is from the first generation, which was made between October of 1980 and July of 1993 (model years between 1981 and 1993). The engine is a 5.9 liter Cummins 6BT straight-6 that produces 160 horsepower and 400 pound-feet of torque. The transmission of this one is a 4-speed automatic.