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AODE & 4R70W Frequently Asked Questions
I would like to go to 3.55's or 3.73's in my SN95 Mustang, but have been told these won't work with the AODE (by a local Ford dealer). What is the problem? And if there will be one, is there a way to fix it?
At full throttle, it will hit the rev limiter before it shifts into 2nd. You will have to lift off the accelerator to get it to shift into 2nd gear. Installation of our US Shift Standalone Transmission Controller will solve your problem and allow you to use any gear ratio you choose. It will also allow you to switch to a wide ratio 4R70W transmission, if you'd like. You can also contact a vendor that burns custom EEC chips and have them change the transmission parameters to fix the problem.
Should I replace my pressure plate with a steel from the clutch pack to give me room to add extra clutches to my clutch drum?
This is not a good idea. The pressure plate is thicker than the steels so that it does not bend. The rigidity of the pressure plate helps keep the clutches and steels flat against each other to maintain maximum contact area. If the top plate is thin and it can bend, then the inside area of the frictions can have less pressure applied to them and decrease holding force.
Which cooler line fitting on the AODE/4R70W transmission is out and which line is in?
On the AODE/4R70W transmission, fluid leaves the transmission through the lower case fitting and returns from the cooler through the upper case fitting. Please note, this is NOT true for the AOD.
How much power can a stock AODE/4R70W transmission take?
In stock form, the early AODE/4R70W units can typically handle about 25 to 50 horsepower above stock power levels. Before planning many engine mods to an early AODE/4R70W equipped vehicle, you should install our AODE Valve Body kit. Installation of the Valve Body kit will allow 1997 and earlier AODE/4R70W transmissions to perform reliably in a 350 to 375 horsepower application. 1998 and later 4R70Ws can handle up to 500 horsepower with just the addition of the Valve Body kit. 2001 and later transmissions usually don't even need a Valve Body kit and work fine at high power levels with just our controller or a modified EEC calibration. If your power goals are higher, you should consider having the transmission rebuilt with heavy duty components as featured in our AODE/4R70W Products page.