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Projects '31 roadster on '32 subrails- would it work?

Discussion in 'Traditional Hot Rods' started by el Roach, May 13, 2018.

  1. el Roach
    Joined: Mar 6, 2003
    Posts: 524

    el Roach
    ALLIANCE MEMBER

    This may be obvious to some of you, but my little pea brain was wondering if this would work? I've acquired a '31 ford roadster project and I'm wanting to put it on a '32 frame that I already have. The rear portion of the subrails have been cut already for the frame kick. Since there is more to mod on the subrails, and that these aren't in the best condition, I've thought why not take out the originals and put the body on a set of '32 subrails??
    Anyone?
     
  2. rustisgold
    Joined: Dec 12, 2007
    Posts: 382

    rustisgold
    Member

    Brookville sells rear 32 subrails, I used them om my 29A on 32 rails, stock A subrails from the firewall to roughly the rear of the cockpit, them spliced on the 32 subrails from there rearward
     
  3. el Roach
    Joined: Mar 6, 2003
    Posts: 524

    el Roach
    ALLIANCE MEMBER

    Cool! I was also thinking of doing that possibly. I know it wouldn't work on a 28/29, but I wonder on this 31 if the full subrails (with a little tweaking) would work??
     
  4. mike bowling
    Joined: Jan 1, 2013
    Posts: 3,295

    mike bowling
    ALLIANCE MEMBER

    '32 is bigger than an A , I don't think the sub frames are compatible ; nothing would line up right. Use a new stock A set up and fab your own back end for the kick. The sub frame isn't cheap. but if you start with the right one and modify it as needed, your car will come out a lot better IMO.

    This is a roadster frame- rear 1/4's are 2" longer than a coupe, and doors are 2" narrower. You can see the indentation on the outside rail where the wheel well lines up. DSCN1545.JPG
     
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  5. el Roach
    Joined: Mar 6, 2003
    Posts: 524

    el Roach
    ALLIANCE MEMBER

    Thanks for the input Mike Bowling. I thought that maybe just using the 32 subrail sides and then the 31 cross channels that it would fit - maybe not though.
     
    mike bowling likes this.
  6. brady1929
    Joined: Sep 30, 2006
    Posts: 7,541

    brady1929
    Member
    from Mesa, Az

    I am jealous, I am sure it's going to be a cool hot rod.
     
  7. Bib Overalls
    Joined: Aug 3, 2001
    Posts: 4,058

    Bib Overalls
    ALLIANCE MEMBER

    Do a search on the HAMB for Steadfast Manufacturing. I used their subrails and I am more than happy with them.

    http://steadfastmfg.com/
     
    Nailhead Jason likes this.
  8. el Roach
    Joined: Mar 6, 2003
    Posts: 524

    el Roach
    ALLIANCE MEMBER

    Thanks Bib Overalls. I've seen the Steadfast conversion rails and they look nice but I was wondering about the front half of the body also?
    Also, when guys are putting the later A bodies on deuce rails, do you use the wooden blocks that model A's use under the rails?
     
  9. sloppy jalopies
    Joined: Jun 29, 2015
    Posts: 2,059

    sloppy jalopies
    Member

    Yes on using the front cowl blocks ... the other blocks originally mounted inside the cross channels not the subrails...
    With '32 rails you will mount the body further out and into the subrails... I had to make up special blocks that mount under the raised section of the subrail...
    I would fine tune those blocks for a tight fit, panhead screw through the subrail and into the blocks so they stay put, then drill the mounting bolt holes...
    Not '32 rails, but my home made frame that is wider than the A, like the '32... note the bolt head just to the rear of the B pillar and how it is further outside than the stock bolt hole that is in sight... DSCN0618.JPG
     
    Last edited: May 16, 2018
  10. el Roach
    Joined: Mar 6, 2003
    Posts: 524

    el Roach
    ALLIANCE MEMBER

    Thanks Sloppy J. Maybe I'll just try the rear 32 subrails grafted onto the model A front half.
    Anyone else feel free to chime in!!
     
  11. krylon32
    Joined: Jan 29, 2006
    Posts: 5,165

    krylon32
    Alliance Vendor
    from Nebraska

    I've done several 29/31 A roadsters on deuce rails and my approach is a little different. First I cut out the sub rails over the rear kick up so the body settles down and then I pie cut the cowl until the body is tight on the top of the rails and then go back and finish fabbing over the kick up. I like the way the cowl then follows the shape of the reveal and lowers the shell for a swoopy look. Never used any wood blocks. Just my way of mounting the body?
     
    48stude likes this.
  12. fordf1trucknut
    Joined: Feb 13, 2007
    Posts: 993

    fordf1trucknut
    Member

    When I did mine I used a crosswmembers front and rear with an f1 tranny crossmember and the rear just fit inside the stock a subrails with some minor trimming.


    Here is a pic before I installed the a rear crossmember.
    011-2_zps505bc601.jpg

    And a shot of the car done.

    18620719_816974868478457_6433099695153238035_o.jpg
     
    mike bowling and bct like this.
  13. el Roach
    Joined: Mar 6, 2003
    Posts: 524

    el Roach
    ALLIANCE MEMBER

    Thanks Krylon. Not sure how you are pie-cutting the cowl? Interesting.

    Thanks Ford Truck Nut.
     
  14. bct
    Joined: Apr 4, 2005
    Posts: 2,681

    bct
    Member

    I just pie cut mine last week. The 32 frame kicks up in the front too and the cowl bottom has to be modified. Mine was about 3/8" + to nothing all the way to the A pillar.
     
  15. el Roach
    Joined: Mar 6, 2003
    Posts: 524

    el Roach
    ALLIANCE MEMBER

    BCT - do you happen to have some pictures of what you did?
     
  16. sloppy jalopies
    Joined: Jun 29, 2015
    Posts: 2,059

    sloppy jalopies
    Member

    The front body to frame bolt runs through a sheet metal 90* bend in the subfloor extension/ lower firewall...
    it will cut easily...
    I did that because my frame arched upward towards the front... I trimmed the front bolt area and the wooden block...
    this removes the front bolt, I use the rear body to bumper brace brackets as front body mounts... vvvvvvxxxx.jpg
     
    Last edited: May 15, 2018
    el Roach likes this.
  17. bct
    Joined: Apr 4, 2005
    Posts: 2,681

    bct
    Member

    Sorry . I just cut the side panels with a zip. 1/2" above the bottom. I still need to adjust from the inside though.
     
  18. 51farmtruck
    Joined: Jul 23, 2007
    Posts: 823

    51farmtruck
    Member

    kidcampbell71 and el Roach like this.
  19. el Roach
    Joined: Mar 6, 2003
    Posts: 524

    el Roach
    ALLIANCE MEMBER

    Thanks a bunch Sloppy J. and BCT!
     
  20. el Roach
    Joined: Mar 6, 2003
    Posts: 524

    el Roach
    ALLIANCE MEMBER

    Thanks very much Sam (51 farm truck)!!! I think this has been the most helpful as I read your entire thread on the 30 roadster that you put on a 32 frame. The pictures were great and I think that I'm going to copy some of what you did.
    I don't have the means to bend up my own back subrail pieces, but I can buy some 32 rear pieces and that should work!!! :D Cool!! I'm anxious to get at it!
     
  21. Alaska Jim
    Joined: Dec 1, 2012
    Posts: 260

    Alaska Jim
    Member

    I am using the steadfast kit in my 29 roadster project on a pinched 32 frame. It does not come with much of anything for directions, but there is info on their web site. I like the kit. It fits well, but you do have to think a little. you don't just go in and wack out the stock stuff, and install it.
     
  22. el Roach
    Joined: Mar 6, 2003
    Posts: 524

    el Roach
    ALLIANCE MEMBER

    Thanks Alaska Jim! I'll check out the website.
     
  23. bct
    Joined: Apr 4, 2005
    Posts: 2,681

    bct
    Member

  24. el Roach
    Joined: Mar 6, 2003
    Posts: 524

    el Roach
    ALLIANCE MEMBER

  25. bct
    Joined: Apr 4, 2005
    Posts: 2,681

    bct
    Member

    Im pretty sure the build linked above is steadfast as well
     

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