C6 or e40d?
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Freshman User
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C6 or e40d?
I have a 1990 f250 7.3 non turbo. When i got it i was told it had the c6. Tranny went out they said it was 850 to rebuild and upgrade, cool right thats nothing for a tranny.i get to the shop and they tell me its a e40d. It does have an overdrive button and the guy said thats c6 dont so the cost of a e40d is like 2200. Any opinions, i guess i could have been mis informed but before it went out it had trouble shifting from 1 to 2 then 2 to 3 then it was smooth so i figured 3 speeds=c6? Idk confused and pissed about a 1400 dollar differance.
Postmaster
Joined: Dec 2011
Posts: 3,860
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The C6 is three speeds and has no overdrive.
The E4OD has 4 gears including an Overdrive. It is also electronically controlled.
What you have in the truck may not be what it originally came with, so the only way to be sure is to look at the transmission itself.
Take a look at this page, it includes pictures:
Articles - Custom Built and High Performance Transmissions
The E4OD has 4 gears including an Overdrive. It is also electronically controlled.
What you have in the truck may not be what it originally came with, so the only way to be sure is to look at the transmission itself.
Take a look at this page, it includes pictures:
Articles - Custom Built and High Performance Transmissions
Clueless spectator!
Joined: Aug 2010
Posts: 1,587
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From: Denver, CO
Does anything happen when you press the overdrive button while driving over 35 to 40 mph. If it has an overdrive button it originally came with an e40d. The factory pan for an E4od says "Metric" on it. IDK if the c6 pan does or not.
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Nope, the C6 doesn't say anything on the pan
Posting Guru
Joined: Dec 2012
Posts: 1,065
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From: western washington
most important to diagnose the tranny first. several sensors give vital info to PCM to control shifts, there is a rpm sensor $75 speed sensor $18 and TPS $55 dirty connections will cause intermittent shift symptoms..
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The truck is at the shop but i dont know about the overdrive. K do know if i push it the little orange light would come kn to jndicate it was on but i image that doesnt mean much?. I dont think it says matric but the pan also doesnt have grooves like most pictures of c6 transmission pans do. I do know its a L pan thats about it but i cant see it unfortentuly
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I really dont think my pan does say anything nut o cant look at the moment
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The shop said they would get to it monday, maybe they will call and say kt is a c6
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