9" swap from Crown Vic?

Discussion in 'Technical' started by Kris, Jan 29, 2015.

  1. Kris

    Kris Member

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    my 7" finally decided to "retire" yesterday and I'm in need of replacement. I'd rather have a bolt in replacement and would be happy with a stock 8" but a buddy of mine says he has a 9" from a 2002( i think) crown victoria w/disc brakes and 4.11 gears. I havent taken a look at it yet but I know its not leaf susp and is likely a bit wider, so some cutting/welding is probably gonna happen. My question is has anyone done this swap? what kind of issues will I run into? How much money should I expect to spend? I don't have disc brakes up front yet so i'm not sure how having better brakes in back will work out as well. Let me know what you guys think.
     
  2. mercgt73

    mercgt73 Member

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    Ford 9" ended in the mid 1980s...

    As far as bolt in, I would just get an 8", unless you are putting down some serious torque.
     
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  3. Kris

    Kris Member

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    what would be then? is not worth my time?
     
  4. injectedmav

    injectedmav Member

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    2002 crown vic is an 8.8 that uses a coil or air spring, is much wider, is a four link, and has a pivot for the watts link mounted to the front of the housing. Serious fab work required.
     
  5. Krazy Comet

    Krazy Comet Tom

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    If it's really a '02 it a 8.8" & is a very good rear but the cost to add spring perches, shorten the housing and axles would be a deal breaker... For 8.8" better choice is Explorer, only one side of housing has to be shortened and the replacement (shorter) axle can come from another Explorer...
     
  6. RMiller

    RMiller My name is Rick

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    Unless someone put different gears in it they won't be 4.11s.
     
  7. Kris

    Kris Member

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    not sure the gears are stock, I may also have a ranger rear end avilable to me might work better
     
  8. Bryant

    Bryant forgot more than learned

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    most rangers were 7.5". a few were 8.8". the ranger rear end does have the pinon off set to the passenger side like the explorer but its narrower. ive never seen a 7.5 ranger come with a limited slip stock. ive install plenty.
    easiest thing will be to find a maverick 8" rear end. nothing newer than 78 will be a bolt in that i know of.
     
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  9. grumpysrg

    grumpysrg Member

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    Had a new 71 302 c4 2dr 1971.
    Hi when I did my install of a 9" I used a stock rearend from a 57 ford 57 58& 59 are the same all I did was removed the old one and dropped in the new one. I had to push the springs apart with my hands and feet it fell right in. I raced it and it was my every day driver.
    This was back in 1971 when I ordered my Maverick black on black and black interior with dark tinted windows.
     
  10. mav1970

    mav1970 Bob Hatcher

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    Those 9 inch rears from the late 50's were the closest fit to a Maverick/Comet
     
  11. Kris

    Kris Member

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    I ended up getting an 8" from 64 falcon. gonna be a lot simpler
     
  12. Hotrock

    Hotrock Rick, an MCCI Member Supporting Member

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  13. Krazy Comet

    Krazy Comet Tom

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    Yeah at one time I had two '57 wagons with 3.56 gears and a Currier with 4.11, 0f course all were sold/junked 45+ years ago... Only thing saved was the 4.11 pumpkin that I later sold...
     
  14. Kris

    Kris Member

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    I'm hoping to get the swap started this week. I'll try to remember to take some pics for show tell later
     

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