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Thread: Are later GJKHPA Rear Suspension Mounts a direct bolt on to early cars?

  1. #1
    ...if you know what I mean... Turbo Mopar Contributor csxtra's Avatar
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    Are later GJKHPA Rear Suspension Mounts a direct bolt on to early cars?

    I have searched the forum and can't find an answer to this. Are the later (90 and up) oval-bushing rear suspension brackets a direct bolt-on to an earlier round-bushing car?

    I have an 85 New Yorker with the hollow rear bar axle and found a complete rear suspension off a Spirit R/T, including the brackets and I am wondering if it will bolt right on. I know that mixing and matching the axles and bushings/brackets is no bueno, but are the mounting holes and bracket locations the same between the earlier and later rear suspensions, and will the wheels be in the same location if the entire thing does bolt on?

    Thanks in advance for the help!

    Warren
    Warren Hall
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  2. #2
    Supporting Member II Turbo Mopar Contributor 85lebaront2's Avatar
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    Re: Are later GJKHPA Rear Suspension Mounts a direct bolt on to early cars?

    I used a 1995 rear suspension on my 1986 Lebaron convertible, the items I found were: Bolt pattern changed to a longer area somewhere between 1989 and 1995, parking brake cable angle is different between 1986 K (and E may be the same) and the 1989 J body. I was able to use my 1986 brackets on the 1995 axle by using PolyBushings.com replacement bushings and drilling my 1986 brackets for the larger bolts. Here are the pictures of the brackets:



    I also did a spreadsheet with the bushings, axles and hangers.
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    "growing old is inevitable, growing up is optional"
    1986 Lebaron convertible to replace totalled 85
    1986 Ford F350 Crew Cab DRW
    1995 Lincoln Continental (project car)
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  3. #3
    ...if you know what I mean... Turbo Mopar Contributor csxtra's Avatar
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    Re: Are later GJKHPA Rear Suspension Mounts a direct bolt on to early cars?

    Awesome! Thanks for the information and pictures! As I get closer, I might hit you up for the spreadsheet if you don't mind.
    Warren Hall
    "My Name is Warren and my car is an alcoholic..."
    OVC - SDAC "Our Sh*t Rolls!"
    Cincinnati, OH
    87 CSX # 741
    317WHP - 380 WFt-Lbs (STD-5)
    12.460 @ 113.2 - Race Gas + Methanol Injection
    12.749 @ 109.84 - 91 octane + Methanol Injection (Still tuning...)
    "Illegitimi non carborundum."
    -General Joseph Stillwell
    TD Runlogger Page Has Moved...

  4. #4
    turbo addict
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    Re: Are later GJKHPA Rear Suspension Mounts a direct bolt on to early cars?

    What you want to find is an 86-88 Daytona CS/ShelbyZ Solid rear axle. Why? They used a very hard solid rear bushing. I made the mistake of burning a set out to install a set of PB's "Race" rear bushings. Big mistake. The rear end felt like a wet noodle in comparison. I've only seen them on the above models. Even the CSX didn't get them from what I've seen.

  5. #5
    Supporting Member II Turbo Mopar Contributor 85lebaront2's Avatar
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    Re: Are later GJKHPA Rear Suspension Mounts a direct bolt on to early cars?

    Quote Originally Posted by csxtra View Post
    Awesome! Thanks for the information and pictures! As I get closer, I might hit you up for the spreadsheet if you don't mind.
    No problem, I did a pretty long list from the parts lists. I first was going to use the entire rear suspension from the 1989 J turbo coupe, but found like the 1986 one, the anti roll tube was broken, hence the 1995 J convertible rear suspension. I originally used the 1989 brackets until looking at the parking brake cables I found they were at an angle at the rear and would eventually wear into the cable housing ends. I took my 1986 brackets and drilled them out for the larger bolts in the later suspension.

    The original idea was to just use the 1989 rear complete as the car was a 4 wheel disc with internal drum parking brakes (which I prefer having been a Mercedes-Benz tech) It now has the 1995 rear suspension with the 1989 rear brakes (the 1995 had drums which I removed and left in the car at Pick-n-Pull Virginia Beach).
    "growing old is inevitable, growing up is optional"
    1986 Lebaron convertible to replace totalled 85
    1986 Ford F350 Crew Cab DRW
    1995 Lincoln Continental (project car)
    2011 Ford Flex Limited (wife's)

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