C6 to E4oD Swap
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Freshman User
Joined: Sep 2008
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From: Corvallis OR
C6 to E4oD Swap
I have an 85 F250 4x4 6.9 Diesel with 4:10 gears. The C6 has a shift kit I believe. That being said, I hate the "kick" that the shift kit produces, also, with the 4:10 ration --it just needs another gear. So, I was wondering if an E4oD would bolt up/convert easy? or would it be alot of nonsense extra work?
New User
Joined: Jul 2008
Posts: 22
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From: south carolina
I would say dont do it. I have had nothing but trouble with my E4OD and wouldnt recomend the tranny to ANYBODY. 2 new ford trannies and 3 rebuilds in less than 4 years. All this with less than 10,000 miles on it.
Post Fiend
Joined: Jan 2005
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You could put a E4OD in but among other things you would need a stand alone controller which I think would set you back around $500.00.
Post Fiend
Joined: Oct 2007
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From: Faibanks Ak.
Fonefiddy has an overdrive unit set up for the c6 that would be abetter deal all the way around. The only thing different would be you wouldn't have a lock up converter.
But NO computer needed and if desired you would have 6 gears versus 4 and a lot cheaper.
But NO computer needed and if desired you would have 6 gears versus 4 and a lot cheaper.
Cargo Master
Joined: Nov 2003
Posts: 2,585
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From: Duluth, Mn.
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Freshman User
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From: Corvallis OR
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Lead Driver
Joined: Nov 2003
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From: Campbell River, B.C.
An E4OD can be built to hold up as well as the best C6s out there, but as I ask all that bring this idea up, how much can you spend on this?
For what I do with my truck, I wouldn't have liked a C6/GV combo, but with 4.10 gears, you will get a nice compromise. You will have a hard time reaching 20 MPG, but you will at least be able to keep up with freeway traffic now.
Truth is its really hard to justify the expense and cost of doing a have decent E4OD conversion (note I didn't say swap, since there is much more to it) unless you rack up a lot of highway miles or you are able to get the parts cheap (but then you may not know what you are getting). I would never use the OEM wiring and controller on a retrofit to an older vehicle. Way too many things to go wrong.
For some one in your situation, its really hard to beat the simplicity and cost of a used auxiliary overdrive.
For what I do with my truck, I wouldn't have liked a C6/GV combo, but with 4.10 gears, you will get a nice compromise. You will have a hard time reaching 20 MPG, but you will at least be able to keep up with freeway traffic now.
Truth is its really hard to justify the expense and cost of doing a have decent E4OD conversion (note I didn't say swap, since there is much more to it) unless you rack up a lot of highway miles or you are able to get the parts cheap (but then you may not know what you are getting). I would never use the OEM wiring and controller on a retrofit to an older vehicle. Way too many things to go wrong.
For some one in your situation, its really hard to beat the simplicity and cost of a used auxiliary overdrive.
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New User
Joined: Jun 2007
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From: ST.L
c-6 to E-4od
I just completed the same swap and asked everyone the same questions. I could not be happier. I spent the winter on and off installing the trans and wiring, but far better than a aftermarket controller with no diagnostics. Any specific questions, I can help. The e4od has it's weaknesses, but can be corrected fairly easily.
Lead Driver
Joined: Nov 2003
Posts: 6,900
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From: Campbell River, B.C.
I just completed the same swap and asked everyone the same questions. I could not be happier. I spent the winter on and off installing the trans and wiring, but far better than a aftermarket controller with no diagnostics. Any specific questions, I can help. The e4od has it's weaknesses, but can be corrected fairly easily.
Any photos?
FYI, the aftermarket controller I used does have diagnostics, but does not have a limp mode or fault code retrieval like OEM. Instead the computer is interphased with a PC or laptop for programming and tuning.
Still very interested to see how yours turned out.
New User
Joined: Jun 2007
Posts: 7
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From: ST.L
I spent alot of time questioning the baumann controller, but decided against it because of lack of fault codes. I have a 86 crew cab 1-ton 2wd. My donor was a 1990 E-350. I used some of the original van harness, and fabbed the rest my self. My computer sits in a console between the seats, kinda under the heater ducts. It was already there, so I decided to use it to hide the teca. It could also be mounted around the steering coulm, if a bracket was made. I fabbed a crossmember, and had the driveshaft shortened and ballanced. Also upgraded the truck to 1990-style glow-plug controller and engine monitor lights{filter/ water/glow/overheat}. I will have some picts soon. Oh yeah, I don't mind helping anyone with the swap, but my time on the computer is hit and miss.
Senior User
Joined: Feb 2007
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From: Pukalani, HI
Did you use the stock computer? I went with the Baumann to get rid of all the useless sensor issues that cause most of the trans problems.
Junior User
Joined: Nov 2008
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My 86' F-350 6.9L w/ C6 is great I get 14mpg, when I'm plowing in the winter I get about 11-12mpg. Problem wise C6 is nearly indestruclable.... Blew a trans line driving down the highway smoking out the back of the truck Turned around and pulled over in a parking lot got a ride to the parts store filled the trans with 10qts... (it is a 12qt trans.!) Never slipped a shift or locked up.. Don't recomend driving a E4OD 2qts low many issues.... My 2 cents.