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Projects 1947 Cadillac - 4 door to 2 door?

Discussion in 'Traditional Customs' started by 55CadillacTed, May 18, 2026.

  1. 55CadillacTed
    Joined: Apr 26, 2010
    Posts: 291

    55CadillacTed
    Member

    Hey fellas. This is for sale. This car would be an insane 2door custom. Move the door sill back about 5” to make the door longer? What would be a general ball park for a fabricator to do this? Ball park? Ignore the trim for now. Yes i know prices vary wildly depending on skill and location. I live in the northeast.
     

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  2. 41 GMC K-18
    Joined: Jun 27, 2019
    Posts: 5,963

    41 GMC K-18
    ALLIANCE MEMBER

    Be prepared to blow a ton of money to turn it into a 2 door!

    IMG_0973.jpeg
     
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  3. Shortened a school bus 7’
    Didn’t cost much of anything
     
  4. Squablow
    Joined: Apr 26, 2005
    Posts: 19,041

    Squablow
    Member

    Does not need to be shortened. Easiest way would be to get a pair of doors from a sedanette (the 2 door fastback model) Remove all 4 doors, cut the center pillar out, hang the longer sedanette doors, weld the pillars back in place where the door will close on it properly and then fill in the quarter gaps with pieces of the old back doors.

    Very do-able. Ive done many similar conversions although not one of these. Getting the longer doors will cut the time required in half, stretching doors properly is a lot of extra work. The front fender pods could be reused, it's possible another GM car of the era might be able to donate the door shells, not sure there.
     
  5. HSF
    Joined: Oct 25, 2014
    Posts: 269

    HSF
    Member
    from Lodi CA

    If you're paying someone to do it, save a bunch of time and money and buy a 2 door. If you're willing to tackle it yourself, it would just cost a lot of your time. A lot!
     
  6. Squablow
    Joined: Apr 26, 2005
    Posts: 19,041

    Squablow
    Member

    As for cost, if you have the longer doors, I'd guess 100 hours, including making up quarter window garnish and quarter gl***, or at least templates for it.

    Double that if the front doors have to be stretched, the regulators would have to be reworked, along with more gl*** patterns and garnish, plus having factory stamped doors will make locating the door post easier.
     
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  7. Squablow
    Joined: Apr 26, 2005
    Posts: 19,041

    Squablow
    Member

    There is no equivalent trunk back coupe/2 door sedan Cadillac in those years, so you'll end up with something totally unique. Could be worth it if you're willing to put in the time or money.
     
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  8. 55CadillacTed
    Joined: Apr 26, 2010
    Posts: 291

    55CadillacTed
    Member

    I am no Rik Hoving, but i moved the door frame. I’m not skilled enough in photoshop to slant the rear roof. But ****Fire…with a cool roof slant I think this would be a killer kustom. I might buy this 47 if it’s still for sale in a few months when I have some cash coming my way. I’m just wondering what the cost for the door work and roof slant. I live in New York. Maybe $8k? Yes I know it varies wildly. I’m just thinking out loud.
     

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  9. Clydesdale
    Joined: Jun 22, 2021
    Posts: 666

    Clydesdale
    Member

    For me, to pull off the two door look the roof needs shortening to bring the C pillar forward, creating more of a coupe style roof.
    Otherwise the proportions are too front and mid heavy, with the loooong hood and new longer doors.

    All becomes a snowball from there with extended 'cat walk' with the right profile to meet the new rear window position etc.
     
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  10. 55CadillacTed
    Joined: Apr 26, 2010
    Posts: 291

    55CadillacTed
    Member

    I did a terrible job moving the C pillar forward. The roof slant is not right. The slant of the roof should match the slant of the front fender. Damn, this could be killer. I might have to hire Rik to professionally render it then think about pulling the trigger. Yes I know it’s big money. But this is exactly what money is for. Fun coupons. I’m 6’4” tall so I’ve always loved the big cars.
     

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    Last edited: May 19, 2026
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  11. This started out as a 4 door. Lots of work to get it to this point.
     

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  12. Paladin1962
    Joined: Mar 10, 2025
    Posts: 459

    Paladin1962

    I love a 2dr but I'd leave this one as-is... Caddies are some of the few more-door cars that pull the look off well enough.
     
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  13. 41 GMC K-18
    Joined: Jun 27, 2019
    Posts: 5,963

    41 GMC K-18
    ALLIANCE MEMBER

    OK, time to inject some common sense here. There is a quick remedy to all of this. and this is just my opinion, nothing more.

    Okay, you are at an age where its more prudent to get over the idea of you doing any of this work.

    You have money, and that is a plus.

    And you want a Caddy two door, I get that.

    So ditch the idea of that 47 cad, and go look for a finished 49 Caddy two door fast back Sedanette, you wont be disappointed I ***ure you!

    The 49 has more modern features over the 47, as you will learn and find out.
    Thanks from Dennis.

    49 Cad & beech 18.jpg

     
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  14. 41 GMC K-18
    Joined: Jun 27, 2019
    Posts: 5,963

    41 GMC K-18
    ALLIANCE MEMBER

    Hey @55CadillacTed
    Feel free to use this image as your avatar.

    IMG_0241.jpeg


    Its far more appealing than the lame dude in the helmet with the question mark on it.
    Your welcome from Dennis.
     
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  15. BJR
    Joined: Mar 11, 2005
    Posts: 12,066

    BJR
    Member

    Or a 49 Olds or Buick fastback.
     
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  16. 55CadillacTed
    Joined: Apr 26, 2010
    Posts: 291

    55CadillacTed
    Member

    To the guys who said just get a 49, ….I think you’re missing the point. We are here to customize, mild to radical. Turning that 47 into a 2 door would have unique proportions. I don’t want a “quick remedy” and to “just buy a 49 and be happy” as you suggest. I’m an artist. Always have been. I won’t be doing the metal work myself. I will gladly pay a highly skilled craftsman. I love supporting artist and craftsman. And I’m a leather craftsman so I’ll be doing the interior myself. So when you tell me to do the logical thing and just get a 49, i say na.
     
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  17. chlsnk
    Joined: Dec 11, 2008
    Posts: 342

    chlsnk
    Member

    Call Bad Chad
     
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  18. Squablow
    Joined: Apr 26, 2005
    Posts: 19,041

    Squablow
    Member

    Hell yes, this at***ude is what I'm here for. If you dig through my personal threads you'll see several similar 2 door conversions I've done, it's very do-able, I feel like my hour estimates are accurate, so multiply by the shop's hourly rate if you're looking for an estimate.

    It's not always about the cheapest way. Some builds are done for the love of the build, and I'm here for it.
     
  19. 210superair
    Joined: Jun 23, 2020
    Posts: 2,675

    210superair
    Member
    from Michigan

    That purple beast is one big damn car. Love it.

    I say do it....

    I'm good at spending other people's money. My boss will testify.
     
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  20. Squablow
    Joined: Apr 26, 2005
    Posts: 19,041

    Squablow
    Member

    20220112_164505_HDR.jpg

    By the way, this is my '41 (best pic I have at the moment). Its got some old custom work done to it, mostly on the rear that you can't see here but just to show I'm all for custom 40s Cadillacs.

    I think the car posted above has great potential with the right plan. (My hour figures don't include a reworked roofline though.)
     
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  21. That era gm just screams custom

    cost? It’s X per hour plus materials.
    Reach out to a couple shops within driving distance.
    Plus how much of a build can you do
     
  22. 41 GMC K-18
    Joined: Jun 27, 2019
    Posts: 5,963

    41 GMC K-18
    ALLIANCE MEMBER

    Atta boy Ted!
    It will be interesting to see the filming of the interior leather work you are capable of!
    Perfection cannot be rushed!
     
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  23. 49ratfink
    Joined: Feb 8, 2004
    Posts: 27,535

    49ratfink
    Member
    from California

    I lengthened the door about the length of the door handle in the picture. not very coupish.. more 2 door sedan. I like door posts.
    caddy.jpeg
     
    Last edited: May 20, 2026
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  24. 49ratfink
    Joined: Feb 8, 2004
    Posts: 27,535

    49ratfink
    Member
    from California

    still a 4 door
    PHOTOCHOP (204).JPG
    "long door" 2 door conversion.
    1947-cadillac-fleetwood-sixty-special (3) - Copy.jpg
     
    Last edited: May 20, 2026
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  25. Scarebird
    Joined: Sep 26, 2006
    Posts: 1,068

    Scarebird
    Alliance Vendor
    from Moita, PT

    In another post you note you are tall; perhaps a 2-door roadster would be a better fit?
    I would think it would be significantly easier/cheaper and more fun. It won't be a daily driver and sit outside.
     
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  26. James D
    Joined: Feb 8, 2007
    Posts: 5,132

    James D
    Member

    Quickie - moderate chop and coupe... 1947-cadillac-series-62-five-passenger-touring-sedan.jpg 1947-cadillac-series-62-five-passenger-touring-sedan.jpg
     
  27. Clydesdale
    Joined: Jun 22, 2021
    Posts: 666

    Clydesdale
    Member

    ^^^^^^ Proves my point.

    A whole lot of roof work and rework of the panels between the rear window and trunk lid to get it looking right.
     
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  28. 55CadillacTed
    Joined: Apr 26, 2010
    Posts: 291

    55CadillacTed
    Member

    ****Fire these are stunning.
     

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  29. Scarebird
    Joined: Sep 26, 2006
    Posts: 1,068

    Scarebird
    Alliance Vendor
    from Moita, PT

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