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Technical buick dynoflow to open drive shaft

Discussion in 'The Hokey Ass Message Board' started by tb33anda3rd, Feb 24, 2018.

  1. tb33anda3rd
    Joined: Oct 8, 2010
    Posts: 13,427

    tb33anda3rd
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    1. Connecticut HAMB'ers

    can a 57 buick dynoflow be converted to an open drive shaft? in the early days of hot rodding would guys convert the tail shafts to put the nail head and tranny in a hot rod, or would they just adapt the engine to another tranny?
     
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  2. 302GMC
    Joined: Dec 15, 2005
    Posts: 5,007

    302GMC
    Member
    from Idaho

    Maybe from Dynaflow equipped '53 Cad or Olds victims of the Hydra-Matic plant fire shortage ? The '53 is "twin turbine" while the '57 is a "triple", I think.
     
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  3. Rusty O'Toole
    Joined: Sep 17, 2006
    Posts: 8,448

    Rusty O'Toole
    Member

    To my knowledge no one has ever done this, or wanted to. Hot rodders couldn't get rid of the Dynaflow fast enough. They would adapt the Buick engine to a Ford or Cad/LaSalle 3 speed manual box.

    They did put Dynaflows behind Cadillac V8s for a few months in 1953 due to the disastrous fire in the Hydramatic factory. Those ones must have been adapted for open drive shafts. Good luck finding one.
     
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  4. Mr48chev
    Joined: Dec 28, 2007
    Posts: 23,214

    Mr48chev
    ALLIANCE MEMBER

    That would probably be like hunting for rooster teeth now. It probably be more productive to pony up the bucks for and adapter to run a Turbo 350 or 400 or
    GM OD trans behind it. I think I would just rob the rear bars off a 60/72 Chevy pickup taking the crossmember that they fasten to in the front for a pattern to mount them. That would be the simple rear suspenson setup. You could probaby get away with running the stock Buick Sway bar.
     
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  5. tb33anda3rd
    Joined: Oct 8, 2010
    Posts: 13,427

    tb33anda3rd
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    thanks, the motor is going in another hot rod, just trying to find the cheapest way to connect it to the open rear. the kits are expensive, not saying they are not worth it..........i just don't want to spend it.
    are standard bell housing available?
     
  6. BOBCRMAN
    Joined: Nov 10, 2005
    Posts: 846

    BOBCRMAN
    Member
    from Holly

    Back in the day, I used nailheads in many projects. Offy and Webber both offered cast aluminum belhousings/adapters for the Buick to std trans. Now there are several places that offer adapters to GM turbo trans
     
    tb33anda3rd likes this.
  7. probably Buick std trans conversion then use a 37-38 buick 3 spd behind it with later Buick gear set say from a 40 or staying with open drive line a Olds gear set and tail. many posts on this here. There was a std conversion over on the AACA forum a while back. Might look there for the std goodies you need
     
  8. Are you going to be working on your 57 Buick??? Thanks Bruce.
     
  9. tb33anda3rd
    Joined: Oct 8, 2010
    Posts: 13,427

    tb33anda3rd
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    Bruce, i have the 57 sold to a local guy who wants all the trim and interior parts to convert his century. he is giving me the naihead/tranny out of his '57 as a partial trade. he is swopping in a later engine. deal works out good as the car will get saved [with the century stuff and resold] he gets the trim he wants and the correct power seats [his has volvo stuff in it, and i get a running nailhead complete [has leaks] we are both happy with the deal.
    the nailhead can then be put in the '31 buick coupe i have. just need to find a solution to getting it connected to the 10 bot rear.
     
    ct1932ford likes this.
  10. Sound like you made a good deal.Good luck with your future project.Bruce.
     
  11. Rusty O'Toole
    Joined: Sep 17, 2006
    Posts: 8,448

    Rusty O'Toole
    Member

    They did make Buicks with manual transmissions back then but not very many. You might find an original bellhousing and flywheel or you could buy aftermarket. Would suggest using a more modern 4 speed or 5 speed trans. Or, if you prefer an automatic there are adapters.
     
  12. tb33anda3rd
    Joined: Oct 8, 2010
    Posts: 13,427

    tb33anda3rd
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    1. Connecticut HAMB'ers

    does anybody know if this looks like the right one for a '57? P2250001.JPG P2250002.JPG
     
  13. tb33anda3rd
    Joined: Oct 8, 2010
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    tb33anda3rd
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    part # appears to be
    H0 26
     
  14. tb33anda3rd
    Joined: Oct 8, 2010
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    tb33anda3rd
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    this one is listed as a '57 and looks like the same engine bolt pattern. this one for a factory buick 3 speed.
    s-l640.jpg
     
    Hnstray likes this.
  15. I'm getting ready to do a 700r4 in a 56. When eliminating the torque tube you need to re-anchor the diff because the torque tube provided rigidity to the rear suspension. I'm using early c-10 truck arms. Others have used a 4 link with success. Also, the rear ends can be converted to open drive by dropping out the closed drive pumpkin (like a 9" Ford) and finding (not easy) a 61-62 Full size Buick 33 spline pumpkin. The engine to trans adapter is made by Bentzens, but I'll probably buy mine from the Nailhead guy.

    Any other questions go to nailheadbuick.com and call the guy, highly knowledgeable. Russ is the guy's name I think.
     
    hidez57 likes this.
  16. you should check with Sheps Machine down near you as he had a bunch of adapters and trannies for sale. If you cannot locate him I have his number somewhere
     
  17. Baumi
    Joined: Jan 28, 2003
    Posts: 1,949

    Baumi
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    In case you wanted to stay with a Dynaflow, you could use a 61-63 Buick Dynaflow, they switched to open drive in 61. But I´d get rid of the Dynaflow and find a 64-66 Buick ST / SP 400 ( similar to a TH400, but with a Nailhead bellhousing). My neighbor fabbed up a truck trailing arm style rear suspension with a mounting bracket that bolts to the stock x-member right behind the trans to convert his 53 special Riviera to open drive. It drives perfectly. He used a TH700 using a homemade adapter .
    If you want to stay with an automatic my choice would be the SP 400 with 3.23 or lower rear gears. That is what I have in my Riviera and for it´s size that boat really moves, but is still quietly cruising at 85 mph.
    Thinking about this I´ll go and listen to Junior Brown´s "Little Rivi Airhead" now, hahaha
     
  18. tb33anda3rd
    Joined: Oct 8, 2010
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    tb33anda3rd
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    1. Connecticut HAMB'ers

    motor is going into this, a 31 buick coupe that was set up for a sbc and 200r. either i adapt to the 200 or connect the tail of the dynoflow to a driveshaft. i guess i could look for the later dynaflow.
    this is a light car and with a v8, i do not think i would need more than a 2 speed. DSCF5052.JPG
     
  19. Blues4U
    Joined: Oct 1, 2015
    Posts: 2,548

    Blues4U
    Member
    from So Cal

    Im running a 2 speed PG in my Model A, it works fine. Like you mentioned, the light weight allows very good acceleration from a stop.
     
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  20. wood remover
    Joined: Dec 23, 2012
    Posts: 595

    wood remover
    Member

    No matter which way you turn it is an expensive swap.Finding a flywheel or flexplate for the conversion is going to be a big expense.Later nailhead flywheels wont fit the earlier nailheads .These were all.luxury cars and not many were manual transmissions .Both of the bell housings look correct.
    I got.lucky and found the parts to switch to manual trans mission on my 66 401 .Offenhauser adapter to ford transmission .
    Good luck on the hunt .there is a company that specialize in nailhead conversions, but the name escapes.me at the moment .
     
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  21. wood remover
    Joined: Dec 23, 2012
    Posts: 595

    wood remover
    Member

    Check out Bendtsens speed gems for conversion info .
     
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  22. ROADSTER1927
    Joined: Feb 14, 2009
    Posts: 2,320

    ROADSTER1927
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    Real Hot Rods have 3 pedals.:rolleyes:
     
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  23. tb33anda3rd
    Joined: Oct 8, 2010
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    tb33anda3rd
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    YEP, i am liking the idea of your bell housing more and more. which flywheel would i use?
     
  24. Squablow
    Joined: Apr 26, 2005
    Posts: 13,182

    Squablow
    Member

    There's a 47 Plymouth coupe in a local junkyard with a nailhead and a 3 speed in it, someone actually modified the torque tube 3 speed Buick trans to run it open drive. Looks crude but it must have worked. Unfortunately there's very little left of the car and the bellhousing and flywheel are already gone. Not sure if this info is really helpful, just interesting.
     
  25. tb33anda3rd
    Joined: Oct 8, 2010
    Posts: 13,427

    tb33anda3rd
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    actually, i thought it could be done and that some hot rodder out there did it.. the tranny and motor are not out of the donor yet, once i get it on the bench i really want to see what it would take to do it. i probably will go the standard route but i am really curious.
     
  26. ROADSTER1927
    Joined: Feb 14, 2009
    Posts: 2,320

    ROADSTER1927
    Member

    It has been 30 years since I built the one with the buick engine, but I found one then. I am trying to remember if they are a neutral balanced engine or not. I may have adapted something. Gary
     
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  27. Squablow
    Joined: Apr 26, 2005
    Posts: 13,182

    Squablow
    Member

    I'm actually going there tomorrow, if I think of it, I'll snap a pic of the tail end of the transmission. At least we will have a picture for posterity, to prove it was done, at least once.
     
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  28. tb33anda3rd
    Joined: Oct 8, 2010
    Posts: 13,427

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    very cool, can't wait to see it.
     
  29. zman
    Joined: Apr 2, 2001
    Posts: 16,536

    zman
    Member
    from Garner, NC

    The cool thing about the 364 is it's the same bellhousing pattern as the 401/425 There are lots of manual shift bell housings available. You can also strap on a ST400 or SP400 from a 64-66 401/425 Lots of options. The hardest part for the 364 is going to be finding the proper flywheel if you manual.
     
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  30. wood remover
    Joined: Dec 23, 2012
    Posts: 595

    wood remover
    Member

    The flywheel is going to be the biggest problem, although there was probably more manually shifted vehicles in 57 .the bellhousing is the same to 66 , the offenhauser bells are out there resonable !!!
     

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