Ihave an 86 F150 that came with the AOD.It went out.So I replaced it with an AOD from a 91 Crown Vic/5.0. I'm having starter problems.The starters are different.Which one do I use?The first picture is the Crown Vic.The second is the F150.Why is there an offset on the Vic starter?

 

A wild guess would be exhaust manifold clearance.

Which flexplate did you use? Which sheetmetal spacer did you use between the trans and the engine block? The starter bolts to the tranny correct? If you used the truck spacer, can you see the starter holes in the tranny through the plate?

 

Another wild guess would be any cross member(s) & the suspension of the vehicle for which it was designed to coexist with.

Car stuff is not truck stuff.

 

There is only one kind of flexplate,the 157 tooth.The motor,spacer plate and flexplate came from an 88 E-150.I'm gonna take the starter off and return it to Autozone for a refund.Then I'm gonna order a NEW starter from Rockauto(the Pure Energy brand because they give you free roadside assistance for 2 years)The Vic one will cost me $74 shipped or $56 shipped for the F150 one.I've got threads out on multiple websites and I will get this issue solved before I buy.

 

Starters changed mid year 1990 on the Panthers they are interchangeable the old style and new style.

 

Uh the AOD flex plate for this application is E2AZ-6375A 164 tooth.

 

I guess its my bad because I read that 164 teeth was only on manual trans flywheels and that 157's were automatics only.So I tell you what matthew q4b,I'm not gonna pull transmission,I will pull starter,I will use a q-tip and mark 1 tooth on flywheel and have someone turn the balancer bolt a little at a time and count the teeth.If I count 157 teeth which starter do I use?If I count 164 teeth which starter do I use?That should finally get this issue solved.Give me a week or two to post back on this thread.Thanks.

 

None you pull the trans and change the flex plate to 164 tooth if it's 157 the AOD was never used with a 157 tooth flex plate, There is no starter for that combination.
Both Manual and Auto used 157 tooth ring gears.

 

I know this thread is almost a year old but did the issue get resolved?
I have a 88 E150 with a 5.0 and AOD and will be replacing the transmission soon. I have read that a 1993 AOD was a much better designed transmission and was thinking about buying one but looked up the starters at RA and saw the difference in the two starters as seen above. I thought the bell housing on all theAOD's were the same?

 

The AOD case (the bell housing intregal) is the same., the starters are interchangeable. The changed to the later starters cause they are cheaper to manufacture and lighter.

 

Thanks for the reply! Yes AOD case, my bad..
I think i will be buying a jasper AOD transmission. I read that the 93 was the last year for the AOD ad that it came stock with a 2" OD band and other upgrades over the 88, perhaps also wide ratio..
Jasper quoted me just over $1,600 for either the 88 or the 93. I know the shops get a better price but the installer quoted me $2040.00 to install it along with steam/chemical flushing the lines and cooler, changing the rear engine seal, and transmission mount. I would be supplying the mount and seal.. To me that sounds like a pretty good deal for $400 more then I can buy the transmission for along with the fact that it will help if there is a warranty issue.

Jasper said you order the transmissions according to the VIN but I don't have a Vin for a 93 F or E150. I ask if the warranty would still apply and they said yes. So now the issue is that I don't want the installer to have any surprise issues. Well with the starter out of the way, do you know of any thing that would cause problems during instillation?
I know my 88 had the odometer gear built in as part of the tail shaft and it is 7 tooth. I do not know what is in the 93 AOD. I read somewhere that the newer AOD's used a 8 tooth gear on the output shaft and so I would need to change my cable end gear. That's ok because I rebuilt the differential and installed a 3.73 gear and the speed odometer is off by 5 mph now.

Another issue might be the shift and TV levers. I was told they should swap out between the 88 and 93 but need to verify this first.

I read the older AOD's had a oiling issue in the tail shaft housing and that was fixed in the 88 or 89's that is another reason i wanted to upgrade to a newer year AOD
What are your thoughts and is there a better place to ask these questions about the AOD and compatibility?

Thanks
Anna

 

I bought a 1993 AOD at a junkyard from a 1993 F150. The tailshaft housing did not have the speedometer cable hole machined in it. I got another tailshaft housing for it from EvilBay. I do not know what year car/truck it was from.

 

thanks Wagonboy,,, That is another issue i need to look into. I wish Jasper was a little better with information in the tech department.. I guess I need to research if the van transmission is different from the truck transmission when it comes to the speed odometer

 

Yes the last year of the AOD was the best. None had the wide ratio gear set, those were fitted to the 4R70W
Gaering is a follows

AOD/AOD-E Gearing
First: 2.40:1
Second: 1.46:1
Third: 1.00:1
Overdrive: 0.66:1
Reverse: 2.00:1

4R70W Gearing
First: 2.84:1
Second: 1.55:1
Third: 1.00:1
Overdrive: 0.70:1
Reverse: 2.23:1


IIRC there were 2 tail housings in 2x4 applications car and truck (long and short) pre 92 would be fitted with the boss for the speedo cable both cars and trucks. The upgraded bits for the AOD are the "A" OD servo , AODE/4R70W steel Reverse drum and Overdrive band apposed to the narrow AOD cast drum (Excepting the MK VIII), and the 4R70W gear set. Throw in an after market 4340 input shaft and revised valve body you have a near bullet proof AOD.

Not a cheap build but it will be stronger package than a stock 4R70W and cost less than a reman 4R70W and stand alone controller.

 

Ok let me see if I have this correct and if it can be verified by anyone here...
So I have a 88 E150 raised roof conversion van with a 5.0 and AOD that I hope to convert to a camper van and I want to replace the transmission. I wont be racing with the van and if I tow a trailer it will be a very light one for camping gear .I will be buying a Jasper re-manufactured AOD and having a shop do the work so I want the install to go without any unseen hitches. The shop said they would have it out the same day and right now it is my daily driver.

Jasper sells their transmissions according the year and VIN so you get what would have been in the van you order the transmission for.
Here is something i read:
"The AOD's up to '89 have a 7 tooth driven gear (inside trans) which is machined into the rear housing thus making changing the driven gear a trans tear-down project. Early AOD tail housings also had an oiling issue that was rectified in '89. "
If the above statement is true, then I would want to at least replace the 88 AOD with a 89.
Since I rebuilt my differential I installed a 3.73 gear set. this means that i will have to replace the cable gear to correct the speed odometer that is now 5mph off.

Here is the rest from the post exert above:
" '90 and up housings had the 8 tooth driven gear which makes drive gear swaps a little more of a PIA. The extra tooth on the driven gear makes drive gear selection somewhat troublesome. The extra tooth makes the drive gear tooth count go up. For example, the 7 tooth '89 gear w/ factory 3.27 gears uses a "red" 19 tooth drive gear, but the '90 and up 8 tooth makes this a "purple" 21 tooth drive gear. This is the largest drive gear that Ford makes. What to do if you have 3.73's or higher with the '90 and up housing? In this case you will need a "23" tooth gear which can be found on certain Jeep vehicles. If you have 4.11's you're SOL. The 23 tooth gears are flimsy at best, (too many teeth for a small diameter) so you'll be changing them frequently. So the conclusion of this may be to change to the '89 tailshaft housing or frequently change your drive gears. This is just an FYI as I went thru this when I had my AOD and did change my gears to 3.73's. I chose to change the tailshaft housing and never looked back."

So if the above statement is correct, buying a transmission for a 1990 -1991 would create a problem during the install with the cable gear.

As noted by Wagonboy and Matthewq4b,, 1992 -1993 would require changing out the extension tail shaft housing to accommodate the speed odometer cable used on the 91 and older vans..

Also the shift and TV cable levers would probably have to be changed out from a 93 to my 88

Putting all this together, would I be better to just buy a AOD for a 1989 or is there a big enough difference in the 93 to make it worth the extra work given my use?
I do not know how modifying the 93 would affect the warranty from Jasper..

thanks
Anna

I just found a mustang speed odometer gear calculator at LMR and it says for my application I would only need a 20 tooth gear for the 1990 and up AOD's with the 9 tooth gear and a 19 tooth cable gear for the 89 and below. The comment above about the 23 tooth gear was from a mustang forum and my application is different because I have 235/75R 15 tires which wold be much bigger then the mustang tires.
And does the 93 even have a speed odometer gear on the shaft since it uses a speed sensor?
https://lmr.com/products/Mustang-Spe...ear-Calculator