Can anyone tell me if a Ford AOD trans is a direct fit replacement for the C4 trans I have on my 1974 302 v8. I want to upgrade my trans for better fuel economy and not get to technical with the swap. My research point to yes, it is a compatible, but I would like to bounce the question around before I comit to the endeavor.

 

You might want to ask this in the small block forum as well.

 

yes they are Interchangeable do you know if you have a 157 tooth flywheel or 164? cause you are gonna need a 164 and backing plate for the aod you will also need a tv cable for a carb lokar makes them then you will need the throttle adapter to time it right for the adjustment and it has to be right on or bye bye transmission but yes it will interchange

 

Thanks for the suggestion....

 

Do you know where I might find some tech datd on th AOD trans and the C4. I want to review the specs and dimensions to see if I will have to make modifications to my drive shaft. They look to me to be in the same transmission case, just that one is a 3spd and the other a 4spd.

 

I believe the aod is just a inch or so longer and the mount is 2 inches further back some aod transmissions are longer than others Lincoln town cars and crown Vic aod are for sure long ones that I know of

 

do a google search as there is ton of info out there on this swap. it is a very popular swap and has been done numerous times.

one thing to keep in mind is that Ford changed the balance on the 302 in i think 82 from 28 oz to 50 oz imbalance, so you cannot use the flexplate from the AOD equipped car on your earlier engine. would cause a huge vibration. there are aftermarket flexplates to do the adaptation or you can use a 351W flexplate that had the correct teeth.

very popular swap, just a few things you have to keep in mind and set up properly and correctly (namely the tv cable) for it to work properly. but do a google search, lots of info out ther on the web.

rgds
Mike

 

This might help.

Automatic Transmission Identification Guide - FORDification.com