The Ford AOD is a 4 speed automatic transmission that was produced between the early 1980s and early 1990's. It was mainly used as a medium duty automatic transmission for cars, vans, pick ups and trucks.Many people are unaware of the performance potential of this unique automatic transmission.Our redesigned version of this unit is updated to performance specifications and most of its high performance internal components are retrofitted from its greatly improved electronic version ,the 4R70W.These updated parts include lightweight stamped steel forward and direct clutch drums standard equiptmnent.High load components are manufactured in house on our CNC maching centers from E4340 steel billet material.The standard gear ratios are 2.40:1 first gear,1.47:1 second gear, 1:1 third gear and a .67:1 overdrive ratio.For a brutal increase in off the line accelleration it can be ordered with our custom ratio 2.84:1/1.55:1 planetary gear set. It has proven itself to be a reliable performer on the street and dragstrip with the proper modifications. The standard transmission case bolts directly to any 289,302,351C,or 351W engines.Our custom S.F.I. aluminum bellhousing allows you to directly bolt it up to any 351M,400,429 and 460 engines.If you are looking for a high performance street /strip and drag race overdrive transmission the AOD can handle the power.The Stage 1 transmissions are available with the factory style lockup converter and the Stage 2 transmissions are available with a non lock up converter only.