Thread: Aod

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My comet is going to be a daily driver, so I am considering an AOD to keep my revvs down on the hw. Does anyone know how well it will fit in my 74? Also will they handle any abuse, and what percent overdrive they do the have?

As a supplement to streets pages, i have this to say. The AOD was built by ford to replace overdrive in vehicles that had had the C4 and C6 transmissions. However, newer versions will not fit your car due to bellhousing issues. My advice would be to locate a vehicle that still had the C-series transmission as an option, and locate a rebuilt transmission or rebuild it yourself. Ford still offers a rebuild kit. As for compatibility, you have to remember that AODs use a TV cable, and you have to make a mount for it. Or steal one off from a AOD equipped car.

I put an 89 Tbird aod in my 64 Fairlane. Not sure how much different your 74 is for space in the bellhousing area. It is bigger there and I did some massaging to get clearance. What transmission do you have in there now? Linkage is a fairly minor concern if you are a fabricator but the TV cable is a bit peaky to adjust. The transmssion should be at least an 85 or newer as they are somewhat more durable. TransGo makes an excellent shift improver for it and you might consider using an aode with an aftermarket controller. The electronic models have the wide ratio first and second gears and stronger internal parts.

Thanks for the reply. I have a factory 3-spd on the floor now. What is your shifter like. Do you have access to 2nd gear? What rearend gears are in your Fairlane?

Unfortunatly I have too much knowledge about the fords.The ford overdrive uses no tv cable its all controlled by vaccum and pressure the cable u refer to is a kick down on the fords . Simple ,simple ,simple and the tranny (aod) with the 4 in the name is the truck tranny and is by far the most industrial of the ford aods.unless ur a racin ?Rear gear changes are cheap and easy if u know what to do..

Originally posted by shawnlee28
Unfortunatly I have too much knowledge about the fords.The ford overdrive uses no tv cable its all controlled by vaccum and pressure the cable u refer to is a kick down on the fords . Simple ,simple ,simple and the tranny (aod) with the 4 in the name is the truck tranny and is by far the most industrial of the ford aods.unless ur a racin ?Rear gear changes are cheap and easy if u know what to do..

mmmmmmmmm.


is anyone gonna notify this guy that he is a full of shit moron?


thats some serious bullshit you got goin thar....shawnlee28.


dumb, maybe dumber.....naw.


more like damn hopeless.





ricebasher302, try this link to get an idear or two...

http://www.mustangsandmore.com/ubb/D...C4AODswap.html

Shawnlee, for lack of a more gentle term, your wrong. The AOD is a Tv cable controlled transmission. the c-series is vacuum modulated. If you have the Great Fun of bolting one of these creatures in sometime, you will find that there are no Vacuum mounts on it whatsoever. Also, the AOD is not by any means a simple or industrial transmission. At around 190 parts, this transmission has a history of being vulnerable to excessive torque and heat. However, tailshaft changes are easy on these transmissions as it has a 6 inch independant housing on the rear.

You know what? The more I hear about this AOD from this forum and other sources, it sounds like it would hardly be worth my time. I wish I could afford a Gear Vendors overdrive and put it behind the Top loader on my dad's shelves and then I would be set!

Ok, the AOD is a good solid tranny. the E4OD is a piece of crap. Also, the AOD is a good swap for a small block (289-351W/C) but will not fit anything else. They make adapters for FE and 385 series motor, but those run almost half of what a new reman tranny will run. If you like standard, I'd recomend either a T5 or T56 od (5 & 6 spd respectively) or if you really want the revs down get a Dodge Viper 6 spd and find a bellhousing that will fit. my .02

~Critter

For performance, a top loader is indestructabe..period, and a gear vendors overdrive is guaranteed to twelve hundred horsepower. I don't want anything exotic, and I'm on a budget. The AOD works, but my motor is not stock, and I'm not convinced an AOD will take the abuse. I've heard too many bad stories.

Originally posted by ricebasher302
For performance, a top loader is indestructabe..period, and a gear vendors overdrive is guaranteed to twelve hundred horsepower. I don't want anything exotic, and I'm on a budget. The AOD works, but my motor is not stock, and I'm not convinced an AOD will take the abuse. I've heard too many bad stories.

And I've seen aod's take he!! on trails, behind 393W's. They can take abuse, and usually are less of a headache than the E4OD wich is what I bet most of the stories you heard were about.

Go with the top loader.

the aod can be made stronger then any c4 or c6.

the e40d will take 1300 pounds of torque when properly built, so it can be nearly twice as strong as an aod.

i build and destroy aod's constantly, they last longer then my c4's ever could and still push my truck lazily along at 80 mph. since i run my truck off road hard theres not really a way for me to keep the tranny alive in hydraulically operated valvebody form unless i go to a 4r70w or a lentech setup.

the weak link in the aod, even if you put the 4r70w parts in it is the damn valve body. it has to do too much. the lentech unit uses the rev clutch along with the directs for 3rd and thats alot of holding power.

i have not seen a failed lentech in a street car yet. some with 380+ at the wheels + 100 shot of spray.

unless your pushin over 400 hp the aod will be fine with the addition of a baumann engineering shift kit. and some upgrade standards. in a tiny lil comet i wouldnt sweat it.

I am a new comer to this website ... but am pretty active on the Ford Truck Enthusiast website because my son and I have spent the last year rebuilding a '51 Ford F1 pickup truck.

I was doing some searching about transmissions and found this thread that looks like there are some pretty heavy hitters about transmissions.

At some point in the F1's past, a '68 289 V8 from a Cougar was installed with what we now believe to be an '85 AOD transmission.

We have finished the rewiring now and while we had it in down we changed the transmission fluid and filter ... it was shifing good last time we drove it last summer, but now, after the rewire and filter change we test drove it down the street and it takes a long time to shift into gear (forward and reverse both) and doesn't want to shift up when it seems like it should.

From my memory, there is no vacuum modulator valve on the transmission. There is a three-wire connetor coming out of the left side o the transmission and it has a 14-bolt pan that says "metric".

I think I am looking for advice on "setting the pressure" and anything else I can do to make sure the transmission will work properly and reliabley.

Any thoughts, comments or simply pointing me in the direction of some manuals would be greatly appreciated!

Regards, Richard

Richard,
The AOD has a throttle-valve lever that operates a shaft inside the shifter lever on the transmission. You should adjust the cable so that it pulls the TV lever fully at full throttle on the carbureter. There should be no free play on the TV cable at idle. If you adjust the idle more than 50 rpms then you should readjust the TV. The official way to adjust the TV pressure is with a gauge from the 1/8" npt test port on the side of the tranny. That three wire connector should be a four wire connector and only activates the neutral safety feature and the backup lights.