Differential question
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Tuned
Joined: Jan 2008
Posts: 281
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From: Virginia
Differential question
I have a 1990 Ford F-150 4x4 that I am planning on lifting 8-10 inches and run 38 inch tires. I have been told that I should swap out my factory 8.8 rear end for a 9" because it is not strong enough to handle the big tires. I am not going to be using the truck for off roading, it's primarily going to be used as a show truck. I want to know if anyone has used the 8.8 rear end with this much lift and tires on a truck and if they had any problems with it, or if it worked just fine. I would also like to know what set-up they run (locker, limited slip, open) and what gear ratio would be good for the big tires. The truck will have a 306 motor with a tweaked AOD transmision in case you're wondering. Any info would be greatly appreciated.
Posting Guru
Joined: Oct 2006
Posts: 1,265
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i don't know much about what it can physically handle, but if it's just a show truck, i wouldn't worry too much about it. the only reason i would say to swap is for "looks". i hate driving around town seeing all these "huge", jacked up trucks with massive tires and these little toothpick rear ends.
