E4OD backward compatibility
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E4OD backward compatibility
I have a 1991 5.8L F150 Lariat XLT Super Cab Long Bed with overdrive AT - E4OD. I've heard newer years have major strength/durability upgrades compared to this one. If my transmission has major problems, which years are a direct retrofit (compatible with my ECU, cables, etc)?
Thanks!
Steven
Thanks!
Steven
Mountain Pass
Joined: Jan 2003
Posts: 226
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I've heard that the E4OD had some major upgrades starting in '95 (made me happy because I heard that after I bought my '95 F250) but I thought that they still used the AOD in the F150's in '91. If it doesn't have the O/D Off button on the shift lever than it's not an E4OD.
At any rate, I would bet that it would be cheaper and much less of a headache for you to take your tranny to a reputable shop and have it rebuilt with any upgrades to strengthen it instead of trying to fit another tranny from a different year truck. That way you would have the strength you want and you know it will fit and work properly.
At any rate, I would bet that it would be cheaper and much less of a headache for you to take your tranny to a reputable shop and have it rebuilt with any upgrades to strengthen it instead of trying to fit another tranny from a different year truck. That way you would have the strength you want and you know it will fit and work properly.
Post Fiend
Joined: Mar 2002
Posts: 19,402
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From: Bonita Springs FL
His 91 has an E4OD. An AOD was never offered behind a 351. Too much torque in its stock form.
But, as Brian said, a rebuilt unit is the best way to go. A used trans is not the way to go, as you don't know the history. 20k miles and you could be looking at a new tranny again. If you need to do it anyway, any E4OD from behind a 300, 302, or 351 will fit your truck.
But, as Brian said, a rebuilt unit is the best way to go. A used trans is not the way to go, as you don't know the history. 20k miles and you could be looking at a new tranny again. If you need to do it anyway, any E4OD from behind a 300, 302, or 351 will fit your truck.
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