Overdrive conversion for FE 390
Senior User
Joined: Sep 2004
Posts: 218
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having an fe posses a problem but im sure somthing could be worked out i would email or call advanced adapters
http://72.20.96.178/commerce/ccc1004-ford-fullsize.htm
and see what they can come up with its probobly been done with the nv4500 but the ZF would be harder with its one piece case, just pretty rare with the fe and it may run some $$$$ you might just want to go to a much lower final drive ratio say you have 3.73 or 4.10 now go to like a 3.31 or 3.08 since you have a creeper 1st already it shouldnt make much of a difference if you tow and your gas milage should improve considerably plus you wont have to change the lenth or the drive shaftes good luck
http://72.20.96.178/commerce/ccc1004-ford-fullsize.htm
and see what they can come up with its probobly been done with the nv4500 but the ZF would be harder with its one piece case, just pretty rare with the fe and it may run some $$$$ you might just want to go to a much lower final drive ratio say you have 3.73 or 4.10 now go to like a 3.31 or 3.08 since you have a creeper 1st already it shouldnt make much of a difference if you tow and your gas milage should improve considerably plus you wont have to change the lenth or the drive shaftes good luck
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