Originally Posted by hammer74
Can a 3.0 A4LD trans be converted to work with a 4.0 A4LD trans and if it can what does it take to do it? The trans in my 91 aerostar 4.0 is bad and I have a A4LD trans from a 3.0.
Most automatics are designed & built with a certain torque & power range in mind, when the manufacturer starts putting the trans behind different engines the trans is usually modified for reliability & durability, by adding extra clutch plates, different friction material, valve body calibration, etc. Normally an ID tag is attached to identify the model changes.
But with the advent of cost cutting, some manufacturers will design & build one unit that will accomodate more than one engine type.
The A4LD is designed to handle; 600Nm of torque. But
the Torque Converter can only handle 234Nm.
The trans suffers from high temperature
, so instal a decent trans cooler.