1988 Eddie Bauer 5.0L, AOD, 4x4; 2010 F150 4.6L; 2006 Honda Civic; 1999 Honda Shadow Spirit 1100cc
E4OD or AOD, which is better and why? Ready. Go!
No, I'm just trying to learn about all the different trans options of the day.only AOD i had was what my 90 F250 originally had. the truck originally my friends who overheated it badly and then gave it to her grandma with warped cylinder heads and running like trash in general. i fixed the engine up good enough to test drive it and turned out engine had bad oil pressure and the AOD was only had 2 gears. other than a couple test drives i never used AOD much. thats when the grandma gave me the truck and i swapped in the Explorer 5.0, 4R70W and EFI.
the 4R70W can be made to have a full manual valve body with no computer control if that is something you are into. i believe OD and converter lockup are switch operated tho. that is something the E4OD cannot do is be converted to full manual control.
Is the AOD tough to take apart and work on? I'm just getting to know my bronco and if the Trans is in similar condition to all the other components in going to need to work on it at some point in the near future.I had an AOD in my 90 that was rebuilt by a drunk/high idiot. I ended up rebuilding it myself because it smoked the clutches. I immediately had issues with it not wanting to shift out of first. I cleaned up the valve body some more and it would only shift out of first when warm. I polished all the valves and it finally would shift properly but never would engage overdrive no matter what I did. That's how I know they're so finicky. When trying to diagnose the overdrive issue I read about so many little things that will cause it if they aren't absolutely perfect. And the valve body operates sequentially, so if it has an issue with the valves for one gear you won't get that gear or any of the others after it.
If I were to swap another transmission in place of my AOD, would I need to move the cross member and get new drive shafts?AOD only came behind 302 in trucks. a couple of cars used them behind 351w. the AODE/4R70W were also only in 302 but not offered in broncos.
E4OD was used in diesels and big blocks as well as small blocks
an AOD can be built strong, mostly using 4R70 parts. E4OD can also be made stronger by using 4R100 parts. many people swap the 302 for 351 and run them jsut fine on AODs. i have heard of 460 being adapted to a built AODs. but AODs in stock form are not very strong. E4OD also have different strength internals depening on the engine it was paired with
of course the AOD is non-electronic where the E4OD is electronic. the 4R70/AODE would be the electronic version of the AOD. the E4OD cost more to build and is known to be problematic if not rebuilt correctly. but alot of that is also due to misdiagnosing the underlying problem with the vehicle
E4OD has wide ratio gearset where AOD has standard ratio gearset. this mean the E4OD has a lower 1st and 2nd gear but the OD ratio is less drastic this means you have more toque accellerating with an E4OD but the highway rpms will be some higher and less load on engine. the AOD can be rebuilt using a wide ratio gearset from a 4R70W.
i personally am not a fan of AODs. they are not great for offroading which i am big into and in stock form not strong. i do like the 4R70W which is the much upgraded and electronic version of it and have it in my F250. i have had relativley good luck with E4ODs in my trucks. for borth trans, only issues were my own fault or due to front pump leaks.
Depends on what you go with... if you convert to manual transmission then yes, if you go to a c6, the. Yes... if you go to a different OD Auto transmission then no.If I were to swap another transmission in place of my AOD, would I need to move the cross member and get new drive shafts?
Too bad your in Dallas, I just took out my AOD and will be selling it shortly.Is the AOD tough to take apart and work on? I'm just getting to know my bronco and if the Trans is in similar condition to all the other components in going to need to work on it at some point in the near future.