1967 Mustang 289 swap a three speed manual for a c4 auto? - Mustang Evolution

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Old 03-21-2010, 03:15 PM   #1
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1967 Mustang 289 swap a three speed manual for a c4 auto?

The car is a 1967 Mustang 289 V8. What I want to do is swap out the the three speed manual transmission for a c4 automatic transmission. What I need to know:
1.Has anyone done something similar to this with success(whats your advice and is it worth it)?
2.List of all exact parts I will need to make this work?
3.How hard is it, will it need any extreme modifications?
4.Any reccommendations?

Thanks for the help.
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Old 03-21-2010, 03:57 PM   #2
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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
- Starter
- 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.
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Old 03-21-2010, 04:23 PM   #3
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1967 Mustang 289 swap a three speed manual for a c4 auto?

It can be done relatively easy with basic hand tools. I went from an automatic to a 4-speed manual in a '66 Mustang and it took one full day of work. You might as well go with the AOD overdrive tranny at this point.
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Old 03-21-2010, 04:49 PM   #4
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1967 Mustang 289 swap a three speed manual for a c4 auto?

If it was mine i would swap the 3 speed for a 4 speed manual.Easier,cheaper and better gas mileage than an automatic.
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