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Thread: Deciphering Fox Axels

  1. #21
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    I updated the spreadsheet to account for the bearing race measurements.

    Also, here is a picture of an axle from my '87 7.5" (Taken a few years ago)



    The race goes almost directly to the flange fillet.

    This would lead one to believe the 83-85.5 and 85.5-88 7.5" axles have different bearing race placement and might not be interchangeable. Can anyone confirm/deny this? If all goes as planned, I'll be comparing my '87 axles with '94-'98 and '99-'04 units.

    Preliminary measurement of the '94-'98 axles shows the race going from 25.75" to 27" from the splines.
    Last edited by JeremyB; 09-23-2007 at 10:15 PM. Reason: forum software is sucking, won't show pics in post...

  2. #22
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    Let's talk housings for a minute, please. So far I see 2 different lengths, 54" and 56". May I ask about where the 10" drum rear fits into this (I have one from an 88 XR7), and how about the Lincoln's housing lengths? Oh, and did anyone confirm the bearing races?
    1987 TC project of infinity

  3. #23
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    Quote Originally Posted by Jim_Miller View Post
    ------------------------------
    Car = TBird/Cougar
    Year =1986-1988
    Ring Gear = 7.5
    A = 61”
    B = 56”
    C =
    D = Same as C
    E =
    F = Same as E
    G = 4 Lug
    ------------------------------
    Car = TurboCoup ONLY
    Year =1987-1988
    Ring Gear = 8.8
    A = 61”
    B = 54”
    C =
    D = Same as C
    E =
    F = Same as E
    G = 4 Lug
    ------------------------------
    ok i just double checking these cuz i found this on randy's ring and pinion

    Ford 8.8 Years Used on Cougar: (1988 - 1996)
    10 bolt rear cover with 8.8" ring gear. Rear applications have c/clip axles in both 28 and 31 spline. Front applications are in late model IFS Ford's and will have 28 spline axles using CV joints.

    Ford 7.5 Years Used on Cougar: (1980 - 1987)
    10 bolt rear cover with 7.5" ring gear. Has c/clip axles with 28 splines.

    i am just wanting to double check cuz i know that i have a 4 lug open diff i havent check into more but also know the biggest bang for buck will be gears and traction help thanks for the info though
    MAKE IT TAKE IT
    "ELEANOR" 1988 5.0L, IGNITION UPGRADE, STRUT TOWER BRACE, SHOCK TOWER BRACE, ROAD RIPPER 1000 AOD, STILL TINKERING

    "MUDSLUT' 1993 F-150 SUPERCAB FLARESIDE 4X4: STOCK 5.0L, ROAD RIPPER 3000 E4OD, 4.56 gears, Detroit locker rear, Posi-Lok limited slip front, 35X12.50R15 Dick Cepek Crushers, more to come

  4. #24
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    FTBCF >> Randy's Ring & Pinion

  5. #25
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    Quote Originally Posted by JeremyB View Post
    FTBCF >> Randy's Ring & Pinion
    k reckon i not understand that one lil help plz
    MAKE IT TAKE IT
    "ELEANOR" 1988 5.0L, IGNITION UPGRADE, STRUT TOWER BRACE, SHOCK TOWER BRACE, ROAD RIPPER 1000 AOD, STILL TINKERING

    "MUDSLUT' 1993 F-150 SUPERCAB FLARESIDE 4X4: STOCK 5.0L, ROAD RIPPER 3000 E4OD, 4.56 gears, Detroit locker rear, Posi-Lok limited slip front, 35X12.50R15 Dick Cepek Crushers, more to come

  6. #26
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    FoxTbirdCougarForums is much greater than Randy's Ring & Pinion

    Which is to say Randy's is wrong.

  7. #27
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  8. #28
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    I read this thread again, and I guess SRBird answered my question. The 8.8 88 XR7 is 55.596". It's safe to assume the '83-'92 Ranger axle will only fit the 54" housing. The 1993-97 Ranger/mazda axle shaft is exactly 1" longer than the earlier years axle., and is 28 spline. The explorer is 1/4" longer than that and is 31 spline, and has a diameter of 1.32" (and uses full size Bronco and F150 bearings) So the explorer is out of the question. But, I'd be curious to know the diameter of the 93-97 Ranger shaft, bearing, and bearing race surface(will it allow full engagement into a XR7 housing?). Knowing the dimensions, I can maybe come up with something that requires little machining.
    1987 TC project of infinity

  9. #29
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    Still trying to get concrete info on the '93 and newer Rangers 8.8 and 7.5 shaft diameters and bearing races. I'm trying to use an 88 XR7 rear with 5 lug and 10" drum without changin the rest of the braking system(cost savings), and I'm waiting for the snow to melt so I can get to the rear end I have. Also, I thought it would be nice to get the info for the 86-88 Tbirds/Cougars with the wider housing and 9" drums. I'm also wondering about any more info on post #21. A sticky is a sticky, but wouldn't it be better with all of the options included?
    Last edited by HAVI; 03-21-2008 at 02:14 PM.
    1987 TC project of infinity

  10. #30
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    V6 mn12's used a 7.5...
    93 Festiva L, 193k miles, BP+T/G25MR swap, T3 50trim .48/.42, SRT FMIC, Capri electronics/Rocketchip, 2.5" exhaust
    bests: ET 12.86, MPH 110.25, 1.92 short
    02 Subaru Impreza WRX, 129k miles
    97 Subaru Impreza Outback Sport, 236k miles

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