Tranny swap - what do you need and what to watch out for?

Things to look out for when swapping from an auto to the 5 speed:
  • On your auto car there is a switch in the tranny which allows you to start the car when the car is in Park only. In a manual car you have switches both in the tranny (Neutral Switch)and on the clutch that are part of the start circuit.
  • You are going to have to change driveshafts to the 5 speed version since that tranny is a different length than the auto.
  • The speedometer will need to be recalibrated since the auto rear end is a different ratio than the what the 5 speed came with. (3:27 for the auto 2:73 for the 5 speed)
  • You are going to need the console out of a stick car to install in the auto car.
  • You are going to have to hang the pedal of course and mount the hydraulic clutch slave cylinder.
  • There is a device that prevents AOD 4th gear lock up on the auto car that may have to be dumbied up or disconnceted.
  • Oh....you may have to use the 5 speed tranny mount and support to...but not sure on that one.
Those are the things that come to mind off the top of my head.

Note:   You will need a 5-speed trans from a SC (Mustang's T-5, Tremecs and T-56 will not fit due to the length of the trans, they will put the shifter location about at the bottom of the radio)

There are a couple of folks who have done this, I'm not sure who.
It is not likely you could use a late model auto treanny since it is computer controlled via the EEC and would be more trouble than it was worth to swap it in IMHO.

Flywheel, clutch assembly, slave cylinder, Hydrolic lines/Master cylinder, clutch pedal assembly, connector wire harness from clutch pedal, drive shaft (it is a different length than the auto) new console trim plate and shifter. You will have a few other odds and ends too, I am pretty sure the EEC will still work, but I am not sure if it will set a "CHeck Engine" lamp for not "seeing" the trans. The radiator should be plugged where the Auto cooling lines went.

While the trans is out I would recomend NEW Clutch assembly (Centerforce F-150 application will work) Slave cylinder, and replacing the synchros in the trans with the brass truck parts. Trans removal is a pain, you do not want to redo it in a couple months to replace any worn parts!

As far as the '94 and up AODE, The SC's have a different version, 4R70W, this is and AODE with SVO's wide ratio kit. An AODE will only work in an older car if you get a computer to shift it! Wiring is compltely different from '93 to '94 so an EEC swap is out of the question. However Baumann Engineering sells a computer to do this trans swap. It is pretty cool, you can program all of your up and downshift points, and even set it up to use your steering wheel Cruise control buttons to shift! Unfortunately its about $600.




     
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