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Thread: Springs

  1. #1
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    Springs

    I'm looking for recommendations for some stiffer rear springs for my 1999 grand marquis. I did look at adtr.net and they have some Eaton Detroit springs. But they don't give much of a description on whether or not they are performance springs or just a direct stock replacement. Basically I'm looking for performance gains from stock, and I also want the rear of the car to sit just a little bit higher than it does currently. Any input would be appreciated.

  2. #2
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    Get some P71 springs, stiffer than the standard springs and they will make the car sit higher too.

  3. #3
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    Ive always used MOOG cargo coils
    04 MERCURY MARAUDER build date:02/11/04
    ITS ALIVE !!!!!!!!

    STAY TUNED!!!!!!!!!!

    **WHIPPLE 4.0L CRUSHER!**0000 (FOR NOW) RWHP

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  4. #4
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    Quote Originally Posted by EMAS View Post
    Get some P71 springs, stiffer than the standard springs and they will make the car sit higher too.
    Any particular brand, part number, or link to get them?

    Quote Originally Posted by MOTOWN MARAUDER View Post
    Ive always used MOOG cargo coils
    MOTOWN , Do you have a part number or link to get these?

  5. #5
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    The P71 rear springs don't seem to be available in the regular aftermarket so I'd check wrecking yards or Ford.

    For the variable rate springs they have them at Napa but those won't give you the lift you are looking for.

  6. #6
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    Quote Originally Posted by SAAAAAC View Post
    Any particular brand, part number, or link to get them?



    MOTOWN , Do you have a part number or link to get these?
    MOOG CARGO COIL 865 http://www.rockauto.com/catalog/raframecatalog.php
    Last edited by MOTOWN; 10-26-2012 at 12:14 PM.
    04 MERCURY MARAUDER build date:02/11/04
    ITS ALIVE !!!!!!!!

    STAY TUNED!!!!!!!!!!

    **WHIPPLE 4.0L CRUSHER!**0000 (FOR NOW) RWHP

    VISIT MY GARAGE FOR A FULL LIST OF MODS

  7. #7
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    Quote Originally Posted by MOTOWN MARAUDER View Post
    Do you have a pic of your car with those springs installed? You can look in my profile for pics of my car and how high it currently sits.

  8. #8
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    Quote Originally Posted by SAAAAAC View Post
    Do you have a pic of your car with those springs installed? You can look in my profile for pics of my car and how high it currently sits.
    MARAUDERS use airbags(in the rear), not coils springs, this is the part# your car calls for, if you want a certain height you will need aluminum coil spring spacers that sit flush underneath the coil springs
    04 MERCURY MARAUDER build date:02/11/04
    ITS ALIVE !!!!!!!!

    STAY TUNED!!!!!!!!!!

    **WHIPPLE 4.0L CRUSHER!**0000 (FOR NOW) RWHP

    VISIT MY GARAGE FOR A FULL LIST OF MODS

  9. #9
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    I've got 2005 CVPI HAP-code springs on order. They will fit the 99 GM right? From the research I did, sounds like they will. Had to jump on the killer deal I got for all 4 springs.
    Last edited by SAAAAAC; 11-06-2012 at 01:25 PM. Reason: add

  10. #10
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    I can't say with certainty, but I wouldn't be surprised if they don't fit. The Panther chassis was changed in 2003...
    The Blackbird
    Trilogy #61
    Driveway Queen

    The Spruce Goose
    2004 Grand Marquis LS Limited Edition
    Daily Driver

  11. #11
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    After doing more research, sounds like the rears will fit but the fronts wont.

    Quote Originally Posted by RF Overlord View Post
    I can't say with certainty, but I wouldn't be surprised if they don't fit. The Panther chassis was changed in 2003...

  12. #12
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    This is an awesome document I stumbled upon

    http://www.idmsvcs.com/2vmod/rearsprings/index.html

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