mirada rear spring mounts

Transmissions and Rear Ends

  1. mopops

    mopops Well-Known Member

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    swapping ford rear in to 82 mirada with stock rear end suspension what do u use use for spring perches -cut n resuse old ones or ? havent started job yet trying to get ducks in a row first thanks
     
  2. Gator

    Gator Well-Known Member

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    Mopar sells spring perches and 8.75 shock plates check mancini or summit for parts
     
  3. Duke5A

    Duke5A Well-Known Member

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    I'm with Gator on this - buy new. You don't want to run the risk of messing up the old perches not being able to use them. Besides if this swap goes south you could still bolt the old axle in the car to get it mobile. New perches are only $30.

    Just be sure to measure the tube diameter of the Ford axle before ordering.
     
  4. mopops

    mopops Well-Known Member

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    so does my car use regular mopar perches?
     
  5. Oldiron440

    Oldiron440 Well-Known Member

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    Are you using a 8.8 Ford?
    I'm not sure of tube diameters of Ranger axles but Explorer axles are 3.25 witch is larger than mopars.
    Caltrack has a nice set of spring perches for the 8.8.
     
  6. mopops

    mopops Well-Known Member

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    fox body 8.8 wheel adapters to got from 4 to my 5 lug and get width
     
  7. Duke5A

    Duke5A Well-Known Member

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    Dude, don't do this. If the housing is too narrow, don't use it and if it is the correct width (or can be cut down to fit) then slide axles in it that have a 5 x 4.5" lug pattern.
     
  8. mopops

    mopops Well-Known Member

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    been there done that have done this 4 years -u have to buy good parts and install correctly
     
  9. Oldiron440

    Oldiron440 Well-Known Member

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    I don't know why you would not use a Ranger axle assmbly or use two rt side ranger axles in the fox 8.8 for the 5 bolt axles.
     
  10. mopops

    mopops Well-Known Member

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    need the width
     
  11. BudW

    BudW Moderator Staff Member

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    There are four different differential spring perches that Chrysler uses:
    - The popular one (’60-73ish Mopar, 3” tubes) – which is what you see for sale everywhere.
    - The FMJ spring perch, 3” tube (also used for other carlines after ‘73ish). This one has a large center-hole instead of a ½” center-hole. I don’t recall seeing this perch for sale, before.
    - The 2.5” tube 7¼” F-body. Not many of these were made. They also have the large center-hole in them.
    - The 1-ton pickup perches (Dana 70 or 80). Larger tube diameter and much larger/thicker perch.

    Hadn’t seen the last 3 for sale before (well, I hadn’t looked for the 1-ton perch before, so it might be). The ones you want is the first one – which is the one for sale everywhere.

    I would agree, get new perches and leave the old one alone. After welded on, paint them well so you will have decades of trouble-free service.

    Note: the goal is to have them welded center-to-center at 44.46” (1,129 mm) and parallel to the centerline of differential pinion gear shaft.
    If you are too lazy to figure that out (like I am), then remove the brake backing plate(s) and use the top two studs to determine level.
    BudW
     
  12. Oldiron440

    Oldiron440 Well-Known Member

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    If you use the Chrysler pads you will need to do some grinding to make them fit the Ford housing its 3.25".
     
  13. BudW

    BudW Moderator Staff Member

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    A good likelihood. Not knowledgeable about Fords – so can’t comment.
    BudW