Jaime Sanchez of TRC Transmissions in Chatsworth, California has experience with untold dozens of AOD-E/4R70W transmissions and is going to walk you through the process of understanding this box.

Case in point: our 4R70W automatic transmission. With 200,000 miles on the clock, the transmission had a pretty good run, but it was time for an overhaul. Desiring another 200,000 out of a rebuild ...

415 horsepower/315 lb-ft torque, 10:1 compression Choice of 600-cfm carburetor or throttle body EFI 4R70W automatic transmission with electronic controller and 2,200–2,600 rpm stall torque ...