1967 Mustang 289 swap a three speed manual for a c4 auto?
I did it with my 71 Mustang, went from a 3-speed to a C4.
Regardless of what people tell you, what I DIDN'T need to change is:
- Drive shaft
- Speedo Gear
Everything is a unbolt, boltup replacement -- no cutting or anything radical.
I had to change my radiator since the one I had didn't have the transmission cooler built in - I had a 6-cyl.
Running the transmission cooler lines were tricky since I received them all bent up.
Changing the brake pedal was easier than I thought, changed the whole support base.
Wiring for the reverse switch plugged right into the harness.
Had to change the Carb linkage to accept the kick down rod. getting it tweeked right took a little time.
Need to add a vacuum line to the transmission modulator.
Replaced the transmission mount.
Replacing the shifter was a breeze.
Pulling the flywheel off for the flex plate wasn't too hard, remember to pull out the pilot bearing from the rear of the crank shaft. Make sure you have the right size flex plate for your engine/starter, I sized mine with the flywheel.
I did the whole thiing on a weekend.
Make SURE you replace the front and rear seals in your C4 before you install it, they need to be fresh when you install it.