I have an 84 F-150 with a 351, C6 and i want to put an AOD tranny in out of a 85 Grand Marquis. I just would like to know if this is possible and if I just used all the parts from the car like the kickdown levers, will I be able to get it to work, or do i have to get parts from a truck that had an AOD. I can't see why the kickdown levers wont work on the truck, but its a Ford, so anything is possible.

 

Some interesting points on your swap are discussed
here: http://autos.groups.yahoo.com/group/4x4van/message/293

There will be some modifications needed in the length department (driveshaft size change) as well as little things like speedometer gear cable extensions and whatnot.

Also, the C6 is a solid beast, and the AOD is basically a car transmission. If you plan on towing with it, it may be a bit on the weak side.

I opted for the US Gear Overdrive unit (auxilliary transmission that bolts to the tailshaft of the C6). Go to usgear.com for more info. I'll be putting that in the truck this spring. About $2000, but very tough.

Anyways, if you're on a budget, and you don't plan on hauling or towing a lot of weight, the AOD is possible, but you'll be doing some minor fab work here-n-there to make it all go, and at least one trip to the driveline shop to get that sorted. I bet you could recoup some of the money to have those mods done by selling that C6 to some Ford trucker out there who needs a replacement.

Hope that helps out dude....

 

Also, find out what ratio your rear end is. I was considering the same move but found that my rear end is a 3.00 and putting in a tranny with OD would have lowered my RPM's too much, like around 1400 going 60mph. I just abandoned the idea cause I think it would be cheaper in the long run to buy something newer with OD, and plus, less hassle, for me anyways.

Another thing, you'll need a different flexplate cause the torque converter bolts for the AOD are different and will not match up to your flexplate. The 85 Marquis you have probably has a 302 in it and uses a 50 oz. imbalance, your 351's flexplate is a 28 oz. imbalance. You'll need a flexplate from a pre '82 ('81 and earlier) 302.

Hope I didn't discourage you. Hope you figure something out!!

 

flexplate is the same between the C6 and AOD, the AOD is 3 inches shorter, so you will need a new driveshaft, you have the yoke, and I asssume the marquis is efi so it has a TV cable with ballstud, which you can adapt to your carb. If its cpi the metal TV rod will be perfect, also Ford sells all the parts for a carbed 84 302/aod combo

The AOD pretty much blowns and with 100k on them they are timebombs ready to explode, so I say nay, I always did it the other way around AOD to C6 which only requires shortening the shaft which I can do in the shop for nothing

Good luck Sir

 

Well both the truck and car are 351 carburated, the truck has a 4 barrel though. It will not be used for towing just pretty mucha cruiser. The rear end gears i can change but I have 3.71 in there now so it should be alright. This way should be defantly cheaper than going with and overdrive unit as i already have this aod in the car that is pretty much new, the car is being stripped down, and the motor put into my 83 bronco. so the kick down levers should fit from the car onto the truck without a problem, since the carb on the truck is AOD compatibale as well. does anybody else have any more suggjestions

 

Th AOD TV rod will probably clip right onto the C6's kickdown ballstud on the 4v carb, and the proper AOD TV Rod Lever is tranny so it should be good to go, be sure to cut the pigtail for the safety neutral switch off the marquis, cut it 2' long so you have plenty to work with, I believe the selctro rod goes right in to, if not I think the one off the C6 can be utilized

 

The AOD in stock trim is rather weak.
And a C6 with a 300 rear will be a taller high gear than the AOD with a 3.71.
The term "overdrive" just tells you that the output shaft of the trans is turning faster than the input shaft and just happens to be associated with a fourth gear in most cases, and no one ever thinks of figuring in their axle ratio which can cancel out the whole top gear ratio advantage!
It usualy is cheaper, a whole lot cheaper, to swap out the rear gear for the overall top end crusing gear ratio and keep the stronger trans.
Also the C6 is so dang cheap and easy to rebuild, that you could have the E4OD lower gear set installed (theres even two ratios to choose from) and get a lower first and second for towing and regear the rear for the top end gear ratio and have an even stronger trans that the beefy C6 you have now!

 

I have a 84 f 150 that had a 302 with a AOD. I replaced it with a 351. I had to get a 28 oz ballance flexplate to go with the 351.
I got a c6 plate by mistake, it will destroy a AOD unit. You must get one for a AOD belive me I know. You can get a Hardened AOD with shift kit from performance transmition in bossier La for around 1000.00 with out a trade. They are good people and can supply the correct flexplate
I love the combination of a 300 hp 351(has a few warm up parts)
and the AOD.
Good luck

 

I used my 82 F150 for many years to carry my race bike back and forth. It has the 351W and AOD both out of an 80's Crown Vic police car. The rear end is a 3.08 and it did everything I asked of it just fine. I like the highway cruising rpms just fine.
My 87 Bronco is a 4.9 and AOD from the factory. It also has 3.08 axles. If I used it more on the freeway I could stand changing them out for 2.73's, the 4.9 is quite happy cruising at lower RPM's than a V8.
You'll want to watch the linkage. The C6 has a kickdown. The AOD has a "throttle valve"linkage. Not only does it control the kickdown, it controls the sifting too. The "TV"cable (or linkage) absolutely HAS to be right or your new AOD will die unbelievably quickly. Most AOD's have cables but some trucks (like mine) have TV rods instead. Just because the rod resembles the one on the C6, don't think it will work. Getting the TV correct is critical.
Speaking of linkage, I cobbled the Crown Vic shift linkage to work but it gave me trouble for years. Finally broke down and sourced the whole setup from a junkyard AOD Bronco. I could have slapped myself. All that time screwing around and the correct stuff just bolts right in slick as you please.
Oh, and you'll have to modify the transmission lines. Best to get the fittings and a section of the lines from the donor car. You can then patch them into the C6's old lines with brass "compression fittings." The C6 fittings won't fit the AOD and the lines are in the wrong places.
You can't use the C6 flexplate. You can get away with using one for a C4 though. Just make sure the imbalance weight is correct for your engine. 28 ounce for pre-82 302's and 351W's. 50 ounce for 82 and newer "5.0's" and no balance weight for a 4.9 engine.
A slight annoyance is that the shift indicator in the dash will never quite line up, even if you change over to to the "AOD" P-R-N-D-2-1 indicator. You can line up the D or the R, but not both. This has to do with the column itself. Auto and AOD columns have slightly different shifter lengths. A very minor thing, I've just lived with it.
Would I convert to AOD again? You bet. It suits the way I use my trucks. If I were in the habit of hauling a horse trailer or loading firewood til the bumper dragged on a regular basis I'd likely stick with the C6.