1 B&M's '80-'93 Ford AOD Street/Strip transmission sports 2.40:1 First and 1.47:1 Second gears along with 0.67:1 overdrive. This means you experience a 33 percent reduction in engine rpm in overdrive. Instead of 2,800 rpm at 70 mph, you can expect 2,000 rpm depending upon axle ratio and tire size for greatly improved fuel efficiency and less wear and tear. For under $1,800, each professionally rebuilt B&M AOD gets heavy-duty clutches and bands, fresh seals and gaskets, a new roller clutch with improved lubrication, and a rebuilt and calibrated valve body. A torque converter must be ordered separately.