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Technical Does Anybody Have A 8.8" Rear Width Chart...

Discussion in 'The Hokey Ass Message Board' started by Crazy Steve, Aug 6, 2020.

  1. ... That covers more than just the narrow versions guys want for '50s and older vehicles? I've searched and come up empty.

    Cars got wider starting in about '59 so a rear axle swap needs a wider version. Now some will say 'Yeah, but those axles are better/stronger than the earlier stuff, why change?'. Well, there's a simple answer.... costs.

    Later swaps have usually been to a Ford 9", but if you haven't been paying attention, those aren't so easy to find anymore. Parts for the pre-'65 GM and Mopar rears aren't so common these days either. The days of picking one up for $50-75 are gone. And the early OEM 9" versions weren't all that tough, I can't tell you how many I personally broke in various cars. Sure, they can be upgraded with N housings, 31 spline axles, etc, etc but you'll have $2K plus into it very quick.

    So enter the 8.8". Just about as ubiquitous these days as the 9" used to be, able to withstand pretty high power levels (just ask the 5.0 racers), can be found with OD-friendly ratios, posi and 31 spline axles without a lot of effort. And they're relatively cheap...

    Ford installed these starting in '83 and used them across all rear-drive vehicles; cars and 1/2T trucks/vans. Somebody must have a chart ....
     
  2. squirrel
    Joined: Sep 23, 2004
    Posts: 56,085

    squirrel
    Member

    you might be able to narrow it down by how many RWD platforms there are, then look for the width of those few rears. Fox, SN95, Panther, Ranger/Exploreer, F150/Expedition, are about it, aren't they?
     
  3. PHuscher
    Joined: Apr 21, 2019
    Posts: 10

    PHuscher

    Does this help?
    Axle Widths.jpg
     
  4. ididntdoit1960
    Joined: Dec 13, 2011
    Posts: 1,030

    ididntdoit1960
    Member
    from Western MA

    Ive got a '00 ranger 8.8 - as the chart above says, its 58.5 WMS to WMS - its also a 3.55 posi and has10x2.5 drum brakes, a 5x4.5 bolt pattern and 28 spline axles - not sure if I'm going to put it in my '65 mustang or not

    These are basically clones of a chevy car 12 bolt - ring gear size, pinion diameter and c-clip axles are all the same or very close.....
     

  5. Couldn't remember the Crown Vic designation, that helped. Here's one that seems to cover all the bases... Thanks Jim!

    @PHuscher , your list missed a few this one had, but had a few this one missed so below is the combined lists.

    Outside
    Width Year Model

    56.50 1969-1977 Maverick/Comet 8"
    56.50 1990-1992 Ford Ranger 8.8
    56.75 1995-2003 Ford Explorer 8.8 narrowed w/2 short side axles
    57.25 1957-1959 Ford, Ranchero, Station Wagon
    57.25 1965-1966 Mustang
    58.00 1966-1977 Bronco
    58.00 1964-1965 Falcon
    58.00 1977-1981 Granada/Versailles
    58.50 1977-1981 Versailles w/discs
    58.50 1993-2009 Ford Ranger 8.8
    58.75 1986-1993 Fox Body Mustang 8.8
    58.75 1990-1997 Ranger
    59.25 1967-1970 Mustang
    59.81 1995-2003 Ford Explorer 8.8 w/disc & 31 spline
    60.00 1958-1960 Edsel
    60.25 1994-1998 Ford Mustang 8.8
    61.00 1964-1971 Ford Full Size
    61.00 1949-1951 Mercury
    61.0625 1999-2004 Ford Mustang 8.8
    61.25 1957-1972 Ford F-100 Pickup
    61.25 1960-1964 Ford Full Size
    61.25 1971-1973 Mustang
    61.25 1967-1973 Torino, Ranchero, Fairlane
    62.50 1989 Lincoln LSC w/ disc
    63.00 1970-1979 Ranchero & Torino
    63.00 1972-1979 Ford Full Size & Intermediate
    63.50 1967 Fairlane w/coil springs
    65.25 1973-1986 Ford F-150 Pickup
    65.25 1978-1986 Bronco
    65.25 1973-1986 Ford Van 3/4 Ton
    68.00 1972 Ford Van 3/4 Ton
    69.25 1977-1986 Ford E-150 Van

    Both lists missed the Panther (Crown Vic) and late truck/van 8.8 rears, but I suspect those are too wide for our purposes. And there appears to be a lot of confusion on the '86 through '04 Mustang 8.8 rears as I found three different widths listed for each series with up to a couple of inches differences depending on who you ask...
    One thing the different sources did agree on is they all have a centered pinion. And I couldn't even find the width of the later Mustang 8.8s...

    Any corrections or omissions welcome....
     
    Last edited: Aug 6, 2020
  6. mgtstumpy
    Joined: Jul 20, 2006
    Posts: 9,214

    mgtstumpy
    Member

  7. The problem with all those charts is they don't spec pinion offset. Explorers are 2 7/8". Rangers have some offset and the 96 mustang I used was around an 1 1/8" as I remember. I don't know if any are pinon neutral.
     
  8. Again, more confusion... One of these sources claims no pinon offset on the Mustang 8.8 and only 2" for the Explorers/Rangers.
     
  9. 1971BB427
    Joined: Mar 6, 2010
    Posts: 8,765

    1971BB427
    Member
    from Oregon

    The real problem with those charts is they cover very few 8.8" Ford axles! Most the axles listed are well before the 8.8" axle was even around! The Ranger Station has the best and most complete 8.8" Ford info.
     
  10. JeffB2
    Joined: Dec 18, 2006
    Posts: 9,502

    JeffB2
    Member
    from Phoenix,AZ

  11. Hnstray
    Joined: Aug 23, 2009
    Posts: 12,355

    Hnstray
    ALLIANCE MEMBER
    from Quincy, IL

    @Crazy Steve .....help us help you. What width do you need. And what specs are necessary. I
    I.e. 31 spline, etc.

    I recently put together a sort hybrid 8.8 axle for my ‘37 Chevy. Used a ‘86/‘93 Mustang housing, Left side 5 lug Ranger axles on both sides, Ranger 10” brakes and LSD 3.73 gears,
    59” width.

    Ranger housings are heavier constructed than Mustang models and Explorer are heavier still. However, the Mustang has nearly centered pinion and for relatively light car should be sufficient.

    Ray
     
  12. gimpyshotrods
    Joined: May 20, 2009
    Posts: 23,333

    gimpyshotrods
    ALLIANCE MEMBER

    I have a 1991 Ranger 8.8 in my Falcon. Since I have a custom tunnel, the offset is not an issue.

    It runs smoothly.
     
  13. 31Apickup
    Joined: Nov 8, 2005
    Posts: 3,379

    31Apickup
    Member

  14. Deuces
    Joined: Nov 3, 2009
    Posts: 23,920

    Deuces

    My 8.8 has half shafts..... :rolleyes::D;)
     

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