I didn't set out to use a C3, thats just how the donor car worked out. I was bummed at first when I found that the Mustang did not have a C4. When the driveline bolted up, my mind changed a little.
I need to put a few miles on her before I claim too many bragging rights about the swap. So far I have run her through the gears with the engine running while the car is up on blocks. The trans shifts fine, there is no noise, trans fluid leaks or obvious problems coming from having an early 3 spd. driveline yoke plugged into the C3 tail shaft. I saved the C3 yoke in case I need to switch it to the 62 driveline. I doubt that I will need to.
Other changes not listed in my earlier post are:
1. I had to change to the early water pump. The late one was too long. The 170 pump bolted up.
2. I used a 62 automatic throttle linkage. This originally bolted to threaded holes in the top of the 62 automatic bell housing. I bolted it up to the late bell by welding the linkage to a piece of 1 1/2 x 7" angle iron drilled and trimmed to bolt thru the top two bellhousing to engine mounting bolts. All the stock linkage hooked up to an early 200 carb. I will modify the stock 62 kickdown rod to mate to the C3. I probably should have used the cable throttle linkage and kickdown from the Mustang. Hindsight is 20/20.
3. I used a 63 automatic steering column so I could keep stock appearence. The C3 came from a floor shift car so the shift arm was backwards for column shift.. I fabricated a down facing shift arm that was tack welded to existing arm so that the direction of the linkage worked right. (This is not necessary if you use a stick shift.) A stock 3spd shift rod bolted up to the collumn shift arm and my fabricated trans arm after a little bending to achieve good mechanics. All in all, it was not to hard.
4. Most of my time has been with trying to fit air into a 6 cyl Falcon. There is not much room in the front of these cars.
5. If in the end this set up does not work to my satisfaction, I think a C4 will slip right in into place of the C3 with only a driveline change. All linkage etc. that I have fabricated should work with the C4 also.
Mike A