Question about 1986 Ford F 350

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Tranny swap I have a 1986 ford f350 with automatic transmission without overdrive. Want to have overdrive. is their a transmission from that year say from f250 with overdrive that will bolt right in or is their a simple fix. engine is 460 with automatic transmission

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You can swap a AOD trans in but is not a heavy duty unit. The E40D is but all electronc and would be expensive.

Posted on Jan 01, 2009


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If you have an automatic transmission on your truck, i would be guessing that the clutch pack for the overdrive is worn out, as in an automatic tranny, you usually have 2 seprate sets of clutch packs, one for the normal drive gears and one for the overdrive gears. Although getting a tranny opened up for any reason will be pretty costly if you have a mechanic do it for you, and if you are not already trained to tweak inside an automatic tranny, i suggest you do not do it yourself, as it is very complicated and delicate. So before you spend a wad of money, always start with checking the transmission fluid level in the tranny, as missing some oil in there will sometimes cause pretty weird and unexpected results. So if the levels are good and everything that has to do with to oil is OK, as I said, probably the overdrive clutch pack that needs to be replaced, and hoping it is not the solenoid bodies that are defective, cause if that is the case, then it will cost about as much to repair the tranny then to buy a new one.

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well if you can find one out of a f250 in the 80's wit a 460 the tranny should match an most of the trannys in the f250's have overdrive.

Oct 12, 2008 | 1986 Ford F 350

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Will not go into overdrive automatic

even as a f350 heavy duty diesel owner i pull a 33 foot trailer i never use my over drive ,its to hard on the tranny.your tranny will last longer, so DONT use overdrive

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