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Technical 1940 Mercury coupe

Discussion in 'The Hokey Ass Message Board' started by Erndoggy, Mar 22, 2021.

  1. Erndoggy
    Joined: Nov 12, 2012
    Posts: 7

    Erndoggy
    Member
    from Dublin

    What year rear end can I swap in a 1940 Mercury coupe preferably Ford. I want it to be the same width as the stock rear end and bolt right up . I was told 1965-1968 mustang V8 I wanted to confirm. I plan on running a small block Chevy. Appreciate any help


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  2. 4tford
    Joined: Aug 27, 2005
    Posts: 1,758

    4tford
    ALLIANCE MEMBER

    I used a ford 9" out of a 70 torino on my 40 ford and it fits good. I'm assuming the mercury and ford are the same width. Also my car has 2 inch lowering blocks.
    1940 FORD 101902 004.jpg 1940 FORD 101902 008 (1).jpg
     
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  3. alchemy
    Joined: Sep 27, 2002
    Posts: 16,998

    alchemy
    ALLIANCE MEMBER

    Finding the same width is easy, but nothing is going to "bolt right up". Lots of fab for ladder bars and spring mounts will be needed. Might be some kits out there for those parts.
     
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  4. okiedokie
    Joined: Jul 5, 2005
    Posts: 4,304

    okiedokie
    ALLIANCE MEMBER
    from Ok

    My 70 Torino was too wide for my 40, but might work in a Merc.
     

  5. Erndoggy
    Joined: Nov 12, 2012
    Posts: 7

    Erndoggy
    Member
    from Dublin

    Yes I appreciate the comments and understand lots of modifications will need to done in order to install the rear end but what I am trying to find out is what rear end is out there that may the same width as a 40 mercury coupe. Thanks


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  6. rustryder
    Joined: Apr 12, 2009
    Posts: 207

    rustryder
    Member
    from Dinuba ca

    10E76CAE-B434-44F0-BD1B-644D04D712DB.jpeg You need a rear end that is even more narrow then stock.Especially if your going to lower the rear end of the car.Reason being the wheel wells are snug and don’t make it easy to remove a tire.I used a 55 f100 truck 9” on my 40 merc.And put tall airbags.This allows me to raise the rear and change a tire easily.Plus the 5.5.5 rear bolt pattern let me run stock merc wheels.I narrowed the rear end as close to the frame rails as possible.Making it possible to roll a tire out of the tight wheel well.Plus I can change third members to get to rpm’s I desire
     
    Last edited: Apr 6, 2021
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  7. rustryder
    Joined: Apr 12, 2009
    Posts: 207

    rustryder
    Member
    from Dinuba ca

     
  8. deucemac
    Joined: Aug 31, 2008
    Posts: 1,138

    deucemac
    Member

    I put a 9" from a 59 Ford wagon under my 39 Merc coupe with 8:00x14 tires on it at that time. I used an old PSI spring adapters and made my own radius rods. No problem with clearance at all. Drove the car for several years and the guy I sold it to put 15s on it and drove it many more years. The 39 and 40 Mercs are basically the same car.
     

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