c-6 to AOD
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c-6 to AOD
I did a search on swapping a c-6 to aod trans for an 1986 f250 4x4 351w and found nothing on it. What i'm trying to get answered is, what parts am i going to need besides the trans? Cross member? Tv kickdown? And what kind of trans do i need? The motor is a 406 crate motor that pushes 385hp 450 ft lbs torque. And what is a good price for the trans? Well fellas thanks for the time and info!
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From: Florida Hill Country
I wouldn't put an AOD in an F250 personally. If I had to have an automatic OD, I'd go with the E4OD which would probably allow the use of your existing drive shafts. You will need a computer though and if your 351W is carbed which I suspect it is, that would make it tough. The E4OD has a lower 1st & 2nd gear than the stock C6 or AOD. The AOD would have to be seriously built for the F250. You could run an E40D with a Baumann controller which runs $425 but alows you to set your shift programs with a lap top.
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Everything i've found in the threads says that in stock form the aod is stronger than the e4od. by the time i buy a e4od and controller and have it built(which i thing with the power and weight of the truck, either trans would have to be rebuilt) So instead of buying a e4od, controller, rebuild it and all the other little things not mentioned in your thread, and i still think it wouldn't work without boo-koo bucks because it is a carburated motor. Wouldn't it make more sense to buy a aod and spend the money to have it built to handle the power? I thing i read somewhere in a thread also that the aod had lower gears than the e4od? I think it was Mustang talking about aod gears being lower? not forsure though. Thanks for your post RLH
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From: Florida Hill Country
I had a '97 F250 HD 4x4 OffRoad that had a EFI 351W and E4OD. By that time, ford had the bugs worked out of the tranny. You could use one of that vintage and a aftermarket controller which would allow the use of your carbed engine. I'm currently running a AOD in my Bronco. I have a planned project to replace the plenetaries etc with a set (which I have) from an 4R70W and intall a custom valve body. But if you already have a C6, you shouldn't need much at all to actually intall it. The big thing would be the cost of the tranny and controller. The point being a built AOD isn't going to be cheap and you would have to run a hardened 300M center shaft in it bare minimum. Regardless of which way you go, I wouldn't put a tired tranny behind your crate engine. You could just build a beafed up C6.
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From: Yuba City, Ca
no the 1st and second gears in a E40d are lower. the C6 and AOD have the same gears with just a overdrive. I would personally have and aod built to handle the power and put in E4OD 1st and 2nd gears. This way you have the gearing advantage of the e4od with the price of a aod and not have to use a controller. I know for sure that the e40d and c6 gears work together in any combination. I hope this gives you an idea on the gears. If i find a chart with the ratios i'll post it for you.
-Aaron
-Aaron
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From: Coutts Canada
You need the tv cable that lokar makes, the ones that the car used only used 2v carbs, and on a 4v carb this won't work, the lokar cable cost my dad something like 86 bucks shipped. (he has a new aod in a truck that he's going to use in a 68 fairlane 500 fastback with a cleveland.) Don't the e4od gears have to be machined a bit to be able to be used in an aod?
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From: Florida Hill Country
Originally Posted by mustange70
Don't the e4od gears have to be machined a bit to be able to be used in an aod?
The 4R70W evolved from the AOD which evolved from the FMC.
The E4OD evolved from the C6.
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From: Florida Hill Country
Originally Posted by BigBluef250
What kind of price should i be expecting for this trans build if i have the trans?
However, if you were to buy a reman E40D it would probably end up being the same but would require the Baumann.
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From: Senoia, GA
i have had a couple of trucks with the E4OD and they have all had problems, i do NOT recommend the E4OD. Why not keep the C6? what's wrong with it again? The AOD is pretty strong and can be had for pretty cheap and then rebuilt to withstand a lot but a C6 will take a brutal beating even in sotck form!
-cutts-
-cutts-
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From: iowa
I will go along with a couple of others on here, and say stay with the C6 if you are looking for fuel mileage then put the wide ratio gears in it (271 first 156 second) then you can use a higher ratio rearend gear and end up almost as good as having the overdrive, with stillhaving a good starting gear, and alot stronger transmission. just my 2cents worth
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From: Florida Hill Country
Summitt carries the low gear set for the C6 for ~$400. You could rebuild or have rebuilt your C6 and throw in a transgo kit. Unless your cruising on the interstate a lot, the od isn't going to help as much. Monsterbaby is correct about the higher diff gear strategy.
Last edited by rlh; Jan 19, 2005 at 07:13 AM.