Transmission Swap

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Aug 1, 2009 | 11:47 AM

seanpd

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Transmission Swap

I'm thinking of swapping out my 4-spd for an AOD in my 93 F-150 4x4 with a 5.0. My question is would I need to replace the engine ECM for one from an automatic equipped truck to compensate for idle changes etc. Any help is appreciated. Sean

Aug 1, 2009 | 12:58 PM

guitarnik

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From: foristell, missouri

i would not do this unless your really really really want an auto. and yes you would either need a tranny controler or a new ECM

Aug 1, 2009 | 01:22 PM

lew52

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Sean you should be fine with that , the AOD is not a computer controled transmission.... Lew

Aug 1, 2009 | 01:35 PM

traxiii

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as an AOD owner

DON"T DO IT! If you want an automatic, go with the 4R70W or at least an AOD-E. They are both way stronger than the regular AOD. I have been through too many AODs to mention and they aren't worth the bother. The 4R70W out of a 1999 explorer V8 will bolt right up, you just have to get a controller from someone like Baumann Electronic Controls: http://www.becontrols.com/products/products.htm
and then you have a bullitproff auto trans good for up to about 450 HP.

Aug 1, 2009 | 01:40 PM

lew52

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I agree that the 4R70W is a much better trans . Alot of the mustang guys would get the gear sets out of the 4R70W & put them in the AOD to make them stronger... Lew

Aug 1, 2009 | 02:18 PM

traxiii

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Quote:

Originally Posted by lew52

I agree that the 4R70W is a much better trans . Alot of the mustang guys would get the gear sets out of the 4R70W & put them in the AOD to make them stronger... Lew

That only helps a little bit, though you get the wide ratio gears that gives a lower 1st and 2nd gear ratio. The AOD is junk, I've gone through 5 of them, the AOD with the wide ratio out of the 4r70W is still a piece of junk for a heavy truck, I know because I've had 2 of them too, and they both failed after less than 20K, and I have a huge oil cooler. I am doing the AOD for 4r70W swap in a few weeks and I'll let you know how it goes.

Aug 1, 2009 | 02:25 PM

lew52

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You will like the 4R70W , i have one in my truck with 180.000 miles on it before i dropped a built Ho in my truck , put B&M shift kit in it and i have been beating on it for a year now with no problems.... Lew