For the longest time, if you ran a Ford small-block or Windsor engine and wanted to run an automatic, your transmission of choice would likely be a C4. For heavier duty applications you'd likely opt for a C6. As with everything, time and technology move on and today many overdrive automatics are available, mostly computer-controlled. With internals loosely based on the FMX, the four-speed overdrive AOD which was offered from is the only non-computer controlled overdrive Ford transmission that will work with a V Ford first introduced an automatic transmission in the Fifties discounting the Hydramatic offered in Lincoln Continentals , with the three-speed Ford-O-Matic, in service from to
The Bulletproof Ford AOD Transmission
AOD Transmissions - Transmission Depot
The popularity of the Ford AOD transmission is well known. That extra gear on the highway is a real nice thing, and if you plan on driving your truck daily or quite often, then an AOD transmission might be right for you. If you are running a computer-controlled engine, then the electronic transmission is probably your best choice. If you are still a carbureted kinda guy, then the original manual cable-controlled AOD is what you should be running. These transmissions were in a ton of Fords from the early s through the early s and can be modified to take some horsepower.
Building the Perfect AOD Transmission
First offered in full sized Ford cars and trucks in , this transmission quickly found its way into the ever popular 5. Plagued with soft shifts and poor reliability,the AOD was not originally designed with performance in mind. Performance Automatic recognized the future potential of this transmission and quickly went about re-designing the hydraulic circuits. What emerged was a transmission that could handle more horsepower and torque than was originally thought. Performance Automatic combined high performance racing clutches and high performance lined bands to improve heat dissipation at the application points.
The main reason for the transmission swap was to gain the benefits of the AOD's 0. The car in question is powered by a mild CFM Holley, dual plane intake, mild cam, dual exhausts and, before the swap, had a perfectly good C4 transmission. While this is essentially a bolt-in job, there are lots of little details that you should be aware of to make things go smoothly.