So after driving my 95 around all winter I've come to like to trans in it much better than my stock AOD in the 88. Both trannies are stock and the 4R70W just seems to respond much better to throttle inputs and in holding gears to higher rpms when warrented (full throttle ect). My AOD isn't dead or dying but if I wanted to do any upgrades (ie higher stall converter, shift kit, A servo, ect) I might as well just rebuild/replace the thing since mine has almost 129,000 miles on it. So I'm thinking that instead of getting a built AOD I'd go with a 4R70W swap instead. I know that there are kits to drop a 4R70W into a 5.0 Mustang (Bauman makes one for example) so I'm thinking about it. I know people are going to say just get a built AOD but it's a pain trying to find someone who knows what they are doing. I've heard horror stories about AODs from well know trans firms (TCI, Lentech, ect) blowing up behind 5.0s at less than their rated capacity. So any input (I know someone is going to say throw in a T5;) )?
:shakeass: Had to the 1st to say it :evilgrin:
Put a T-5 in!! :burnout: Na, seriously though, I've read somewhere in one of the stang rags that someone has an adaptor or something like that to put 4R70W behind a 5.0 Too bad I gave the one behind my 4.6 away :beatyoass:
you could use a 94-95 v8 mustang computer and harness. still eec iv but it will run the electronic trans. also 5.0 and 4.6 have different bell housing bolt patterns
you can swap most of the 4r70's guts into your aod case. you can also purchase a manual valve body from PA, so you dont have to run a controller.
Yes but that computer is designed to control an AODE not a 4R70W.
its basically the same thing.
go to FordvsChevy.com
talk to a guy named silverfox
knows his transmissions and builds and sells performance parts for them. he will have all the info you need
Nope sure isn't.. To run a 4r70w with an AODE controller you have to change the Torque Converter Solenoid and the valve body controller with units out of an AODE. After those modifications it will work. If you don't it will burn the EEC up.
i did say
basically. :raspberry
I've thought about that but I kinda like how the electronic control works. It's kinda nice to have a smart trans;)
I've talked to him on the clickclick racing forums before. I'm thinking I should start a thread on there about this.
Any more input on this guys? Good vs. bad idea? Go for it I want to know what you guys think.
Kid i know from FvC has it in his mark 7, he LOVES the trans
Its a good idea.
Get a 4R70W out of a later model v6 mustang, 99+. That transmission is stronger than your current AOD. Do the mods I mentioned and enjoy. In your situation you will gain many things. MAF (something you should have already done), a better transmission and transmission shift point tune ability.
It really depends how much money you want to spend. Doing a rebuild with your current AOD, using a 4R70W gearset would be the cheapest and still be plenty strong. With a shift kit and hi-rev govenor your AOD shift points could be greatly improved. Plus, the trans would still be a drop in. If my AOD goes any time soon, I will probably go this route.
I'd say swap to a 4r70 if you can swing it, otherwise just throw the 4r70 gears in your aod and call it done (if it's a 89 or newer aod that is). 87-88 had a not so good output shaft that doesn't get enough fluid to something something higher rpms something burn up your transmission. I don't know what it doesn't get fluid too, but I am replacing mine anyway with a newer stlye hardened output shaft to avoid that problem.
I'm guessing here, but I think that in the long run you would have a a cheeper solution with the 4r70 because:
1. you get to keep lockup on the highway and it will still be reliable
2. Programmable shift points means you don't have to spend a bunch on a manual valvebody or shiftkit.
3. better 1st and 2nd ratios over aod.
<87 had this issue. 88+ had the revised oiling.
x2
4r70w all the way:evilgrin:
You would need a core 4r70w gear set for the parts anyway, so why not use that one to begin with. It already has the mods. The question after that would be do you want to go manual shift valve body or electronic shift?
I see late model 3.8 4R70W's on craigslist in my area all the time for next to nothing.
????? The only difference I can think of is '98 and up. The AODEs, and early 4Rs had the same internal WIRE harness and bulkhead connector, and the '98 and newer 4Rs have a printed circuit internal harness with seperate bulkhead connector that uses less pins. The TCC solenoid is different, but the EPC is as well, this is what keeps you from using the wrong internal harness. You can stick a late model 4R into an older car, it wont burn the controller up, it just wont work. That is why the Baumann site has 2 different conrollers.
On the subject of AOD to 4R swap, if you have the extra cash, do it, I cant wait to do it to mine!
T56 swap...
http://www.becontrols.com/products/electronicscat.htm
Hook that box up with the harness and enjoy your electronically controlled trans.
I'm still on the fence on this. The AOD in the car is staying this year. I plan on doing the trans next spring. I have to decide if I really want to do the 4R70W or go with a built up AOD. I've found a shop that all the local 5.0 AOD Mustang guys go to. He's very good and builds a good product. It depends on my financial situation (ie if I have enough free money left over after bills, saving ect) as to what I'm going to go with. I'd love to go with a 4R70W but to get it done the way I want it (higher stall torque converter, VB mods) it will cost more than an AOD. But I want my electronic trans lol.
Well, A good way to get an electric trans is to swap in a 4.6L+Trans, right? :burnout:
Why would I want a pos 4.6 (well except the dohc 4.6 from the 03-04 Cobra those are nice) when I've got a 5.0 HO? ;)
that's effin' cool. :hick:
Hmmm for the simple fact that it is way more efficient per cubic inch at producing power than the 5.0 ever thought about being. That is especially true if you get a 99+ 4.6 with the PI heads. The only thing a 5.0 has going for it is that they are cheap as hell to work on and get parts for.
Yeah but I like low end torque ;)
In the next few weeks I'll have a built AOD installed in my car (once my parts get here and my mechanic gets back from vacation) with all the goodies. And if you wanted a demo something could probably be arranged, our cars are pretty similar except for the fact that you have gt-40p's (stock heads for now:mad: ). Taking a spin in mine would give you a pretty good baseline for comparison.
Anyway there's plenty of time until next spring for you to make up your mind.