Rear End Size?
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Senior User
Joined: Apr 2003
Posts: 327
Likes: 0
From: Chalmette, LA
Rear End Size?
I am trying to find out what size my rear end is on my 1984 F-150 and the decal inside my door reads "18" by the axle marking. Can anyone tell me what size rear end I have?
Post Fiend
Joined: Nov 2002
Posts: 9,987
Likes: 7
From: Memphis, TN
Rear End Size?
I've worked on an '86 EB Bronco with a factory 9". That's the last year they were used because of ABS in '87.
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Posting Guru
Joined: Oct 2002
Posts: 2,498
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From: Raleigh, NC
Rear End Size?
The '84 in my sig has a 9". I'll have to go and look up the axle code to decode the ratio.
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Post Fiend
Joined: Nov 2002
Posts: 9,987
Likes: 7
From: Memphis, TN
Rear End Size?
The axle I built from junk parts that you can see in my signature link. I've stayed with the original 3.08s because I have the lowest granny gear available (NP-435), so the hi ratio and tall tires (32s) give me a cheap overdrive with no problems towing heavy stuff. Maybe if I ever get enough spare cash to swap in a ZF, I might go a LITTLE lower, but I doubt it.
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