Questions about AOD in 71 stang

[TireSmoknWindsr]

I have an AOD tranny. The Grande needs a tranny...so I figured this might be just the thing for a swap instead of the C-4. It's gonna be pretty much stock so no need to worry about thrashing the puny AOD. It's out of a 5.0 and I believe they are the same length as the C-4 needing no driveshaft mods. I have the bellhousing. I am unsure as to if the 71 302 has the smaller flywheel or what? Also I dont think the crossmember will be any problem. I have a 5.0 shifter....now another question is how about the linkage? What might need to be done for the linkage. It oughta be a pretty straightfoward swap though.

 

[bnickel]

have an AOD tranny. The Grande needs a tranny...so I figured this might be just the thing for a swap instead of the C-4. It's gonna be pretty much stock so no need to worry about thrashing the puny AOD. It's out of a 5.0 and I believe they are the same length as the C-4 needing no driveshaft mods. I have the bellhousing. I am unsure as to if the 71 302 has the smaller flywheel or what? Also I dont think the crossmember will be any problem. I have a 5.0 shifter....now another question is how about the linkage? What might need to be done for the linkage. It oughta be a pretty straightfoward swap though.

you will need a different flywheel, any 351w or c will work fine. the aod is longer than the c-4 so you will either need to have your's shortened or if you have the original 2 piece shaft (not sure if the 71-73 had those or not) you will need to have one made. crossmember may not need much in the way of mods to work (again not sure on the 71-73) the linkage will have to be modified most likely and you also need to make sure you get the correct TV cable for your app, i think you could probably source one from a throttle body injected car or truck and modify the carb linkage to make it work or you could get a new one from lokar for about 50-60 bucks. also make sure you have the block plate for the aod as well because the c-4 unit won't work.

 

[TireSmoknWindsr]

Ya sure about the length. My friend's dad has a transmission shop and has several classic stangs. He said they are the same unless I get one from a truck which happens to be slightly longer. According to him the late model 5.0 flywheel would work, he didnt say anything about a Windsor. He said really it was bolt in minus linkage and getting the flywheel right.

 

[bnickel]

no really the aod is longer than the c-4 and the late 5.0 flexplate is 50 oz. unbalance and the 302 in your car is 28 oz unbalance, it will bolt on but the balance will not be correct, you vibrate all sorts of stuff inside the motor loos, like rod bolts main bolts and you'll thrash the bearings completely within a few hundred miles or less. do some more research before you jump in head first

 

[351LX]

The Ford Motorsport aluminum driveshafts for the fox Mustangs is listed as fitting C-4's,T-5's and AOD's so the AOD has to be pretty close in length to a C-4.The Windsor-fox site has some good info on the swap in their frequently asked questions section you might want to check out. http://www.windsor-fox.com/

 

[MadMach1]

I have an AOD tranny. The Grande needs a tranny...so I figured this might be just the thing for a swap instead of the C-4. It's gonna be pretty much stock so no need to worry about thrashing the puny AOD. It's out of a 5.0 and I believe they are the same length as the C-4 needing no driveshaft mods. I have the bellhousing. I am unsure as to if the 71 302 has the smaller flywheel or what? Also I dont think the crossmember will be any problem. I have a 5.0 shifter....now another question is how about the linkage? What might need to be done for the linkage. It oughta be a pretty straightfoward swap though.

I put an AOD from a '92 LX in my '72 Mach 1 in November 2002. I did not have to modify the driveshaft, but I did have to use the yoke from the '92. The Crossmember will need to be modified as it will interfere with the right rear corner on the AOD oilpan. I used the shifter and linkage from the '92 and it hooked right up. Biggest pain was trying to hook the TV cable up to the throttle linkage and get it adjusted. Other issues were cooling lines, lock-up converter (I used a non-lock-up), and nuetral saftey switch. I also kept my original flexplate (351C) since it also bolted up without mods and because I thought the flexplate/harmonic balancer relationship was the one you had to worry about. Maybe I just got lucky, but I drove it 5 days a week for almost a year before I took it down for the EFI swap without a problem. Good luck...

 

[6T6coupe]

The AOD is about 1" longer. The FRPP shaft will fit all those trannies because yoke is long enough to accomodate the C4.

The C4 yoke has a longer input than the AOD yoke. It matches the diameter and spline count, but to use the C4 yoke, it may need to be cut down slightly. When I originally put the AOD in my 66 I used the original C4 yoke, I tried to use an AOD yoke, but the u-joints were different on the one I got. I ended up using the old yoke, but I had to cut several inches off the end so that it would fully slide into the AOD because the output shafts were splined different distances.

My driveshaft still needed shortening by 1". I could get it in without shortening, but there was no slack between the yoke and the tailshaft seal. That was $50 at the driveline shop. Try the stock driveshaft; it may fit, but I'd bet it will be an inch too long.

The trans mount is also about 1.5" further to the rear and you will need to buy or make a crossmember.

And as for your dad's friend, don't let him work on your car. If he installs that late model flexplate on your early engine, you will be shaking like a vibrating bed in a cheap motel. Wrong balance. And buy that man a tape measure......

 

[Lswhat]

at the speed shop i got to they said either the big flexplate or the small flex plate will work u just need to get the starter with the correct offset. supposedly the bellhousing is made to except either one.

 

[bnickel]

I put an AOD from a '92 LX in my '72 Mach 1 in November 2002. I did not have to modify the driveshaft, but I did have to use the yoke from the '92. The Crossmember will need to be modified as it will interfere with the right rear corner on the AOD oilpan. I used the shifter and linkage from the '92 and it hooked right up. Biggest pain was trying to hook the TV cable up to the throttle linkage and get it adjusted. Other issues were cooling lines, lock-up converter (I used a non-lock-up), and nuetral saftey switch. I also kept my original flexplate (351C) since it also bolted up without mods and because I thought the flexplate/harmonic balancer relationship was the one you had to worry about. Maybe I just got lucky, but I drove it 5 days a week for almost a year before I took it down for the EFI swap without a problem. Good luck...

madmach, i noticed you siad your car had a 351-c, did it have a c-4 trans or the fmx, if it had the fmx that is why you didn't have to get a diff driveshaft, the fmx and aod only differ in length by about 1/4" the c-4 is at least an inch shorter than the aod

 

[Daryl S]

madmach, i noticed you siad your car had a 351-c, did it have a c-4 trans or the fmx, if it had the fmx that is why you didn't have to get a diff driveshaft, the fmx and aod only differ in length by about 1/4" the c-4 is at least an inch shorter than the aod

His car had the fmx, I know this cause i helped him put it in.

 

[MadMach1]

madmach, i noticed you siad your car had a 351-c, did it have a c-4 trans or the fmx, if it had the fmx that is why you didn't have to get a diff driveshaft, the fmx and aod only differ in length by about 1/4" the c-4 is at least an inch shorter than the aod

Hey bnickel, yeah, you were correct, as Daryl S said, it was an FMX. On a side note, how much research have you done for the rack and pinion mod? I still have the '92 LX in my back yard and have been wondering how much, if any of the R&P stuff would work in a change-over. Any info would help, thanks.

 

[bnickel]

Hey bnickel, yeah, you were correct, as Daryl S said, it was an FMX. On a side note, how much research have you done for the rack and pinion mod? I still have the '92 LX in my back yard and have been wondering how much, if any of the R&P stuff would work in a change-over. Any info would help, thanks

i haven't got much accomplished lately. i'm still on the fence about building my own using a dodge caravan rack, or using a randall's rack kit. however i can tell you that the rack from the 92 won't work since it is front steer rack, and you'll need a rear steer rack unless you plan doing a MII style conversion or a griggs setup, both are way more money than i want to spend. there is a possibility you could find a reverser box, that would reverse the direction of rotation, someone on here, i don't remember who, who was building his own, using a couple of crank timing gears, but i think you can buy them from places like AFCO though. i'm going to some more research later this spring or early summer on what it will cost me to do the caravan rack versus buying one of randall's kits or possibly one of speed directs kits once they get them finalized.

 

[MadMach1]

i haven't got much accomplished lately. i'm still on the fence about building my own using a dodge caravan rack, or using a randall's rack kit. however i can tell you that the rack from the 92 won't work since it is front steer rack, and you'll need a rear steer rack unless you plan doing a MII style conversion or a griggs setup, both are way more money than i want to spend. there is a possibility you could find a reverser box, that would reverse the direction of rotation, someone on here, i don't remember who, who was building his own, using a couple of crank timing gears, but i think you can buy them from places like AFCO though. i'm going to some more research later this spring or early summer on what it will cost me to do the caravan rack versus buying one of randall's kits or possibly one of speed directs kits once they get them finalized.

Thanks for the info. I found a thread here that reads like a Michener novel about R&P stuff. I should have read before I asked. Looks like Randalls rack or speed direct for me....

 

[Platonic Solid]

The Ford Motorsport aluminum driveshafts for the fox Mustangs is listed as fitting C-4's,T-5's and AOD's so the AOD has to be pretty close in length to a C-4.The Windsor-fox site has some good info on the swap in their frequently asked questions section you might want to check out. http://www.windsor-fox.com/

Is it just me or does that link give everyone a "You are not authorized to view this page" message?

 

[jscar1968]

uhh,crap!

I just installed an aod in my 66 stang w/ 289 and c4. I got a crossmember and Lokar tv cable from Dark Horse performance...But, I may have goofed up with the flywheel. I had the 157 tooth stock one that I replaced with a new 164 tooth 302 one. I have vibration but I don't know if its the flywheel or the fact that I cut about an inch off the input yoke of the driveshaft. Somebody help me. I haven't been able to drive it over 30 because its still in a million pieces because I just rebuilt the whole front end. So I dunno if its just alignment.

 

[bnickel]

Thanks for the info. I found a thread here that reads like a Michener novel about R&P stuff. I should have read before I asked. Looks like Randalls rack or speed direct for me....

yeah i loved that thread, too bad nobody could come up with a whole lot on our own, i guess most of us are just too lazy, LOL

I just installed an aod in my 66 stang w/ 289 and c4. I got a crossmember and Lokar tv cable from Dark Horse performance...But, I may have goofed up with the flywheel. I had the 157 tooth stock one that I replaced with a new 164 tooth 302 one. I have vibration but I don't know if its the flywheel or the fact that I cut about an inch off the input yoke of the driveshaft. Somebody help me. I haven't been able to drive it over 30 because its still in a million pieces because I just rebuilt the whole front end. So I dunno if its just alignment

try this, remove the driveshaft from the car, start it up and rev it a little if you still have the same vibration, it is the flywheel. what year was the flywheel for anyway, if it is for a 82?-later it is the 50 oz unit and is not correct for your 289 and is most definately contributing to vibration if not the entire cause of it