Register now to get rid of these ads!

Technical 318 poly to Gyromatic

Discussion in 'The Hokey Ass Message Board' started by MIHooper, Jul 26, 2018.

  1. MIHooper
    Joined: Dec 9, 2017
    Posts: 48

    MIHooper
    Member
    from Philly

    I know I’ll need a 2bbl stromberg w/solenoid for the transmission to work... but what else? Will it even bolt up? Any direction would be great. Thanks!!!
     
  2. A Turbo encabulator. Sorry, I couldn't help it. :)
     
    Last edited: Jul 27, 2018
    MIHooper, RICH B and Hnstray like this.
  3. swifty
    Joined: Dec 25, 2005
    Posts: 2,541

    swifty
    Member

    One thing to consider up to 1962 Polys had an 8 bolt crank flange and 62 and later they were 6 bolt. I don't know anything about a Gyromatic, assume they were a 50's trans used by Mopar. There are guys on here that know all you need re Mopar engines and trans- maybe they will chime in.
     
    MIHooper likes this.
  4. Rusty O'Toole
    Joined: Sep 17, 2006
    Posts: 9,756

    Rusty O'Toole
    Member

    The Gyromatic drive was no more when the first 318 was made, in other words they never came together from the factory and I don't believe there is any simple way to make one fit.

    Chrysler and DeSoto hemi V8s used this transmission up to 1953. So far as I know those are the only V8s that did.
     
    MIHooper likes this.
  5. Rusty O'Toole
    Joined: Sep 17, 2006
    Posts: 9,756

    Rusty O'Toole
    Member

    The Chrysler Turbo Encabulator

     
    mgtstumpy and Casey Riley like this.
  6. Casey Riley
    Joined: Jun 27, 2018
    Posts: 543

    Casey Riley
    Member
    from Minnesota

    Oh man. I saw that a long time ago when our auto shop teacher brought it in on VHS. I totally forgot about that. Funny stuff.
     
    MIHooper likes this.
  7. Rusty O'Toole
    Joined: Sep 17, 2006
    Posts: 9,756

    Rusty O'Toole
    Member

    Gyromatic had a super deep bellhousing to hold a torque converter plus a clutch. V8s had a bell on the back of the engine, sixes had a flat plate. Neither comes anywhere near fitting a 318.

    I suppose it would be possible to adapt one but why bother? There are lots of better transmissions. If I had a car that came with one I would keep it but I sure wouldn't adapt one to a motor that didn't.
     
    MIHooper likes this.
  8. Hnstray
    Joined: Aug 23, 2009
    Posts: 12,355

    Hnstray
    ALLIANCE MEMBER
    from Quincy, IL

    There is every reason to think that a Gyromatic might be fitted to a very early 318...something no later than a 1961 model engine, for the reasons mention in post#3 regarding the crankshaft flange and block bolt pattern are the same. The Desoto and Dodge V8's never had the integral bell housing on the back of the block, like Chrysler 331's did. Mopar wisely ditched that design with the intro of the Dodge/Desoto engines. So, that being the case, it is conceivable that a Gyromatic from that era Desoto or Dodge V8 could be fitted to pre-'62 engine.

    The transmission itself from your 6 cylinder model should be useable on a V8 providing you can locate and use a V8 bellhousing and the aluminum so called adapter plate that fits between the block and bellhousing.
    You might also need some of the other bits and pieces inside the V8 bellhousing. Ideally, if you pursue this idea, locating an early V8 with a Gyromatic still attached would be the best source of the complete setup.

    But, I have to agree with Rusty O'Toole above.....why bother? A later 318 and Torqueflite would be easier in several ways and result in a better driving experience. If if you are particularly fond of the Gyromatic, keeping the 6 cylinder in place would be the simplest solution.

    Ray
     
    Last edited: Jul 27, 2018
    MIHooper likes this.
  9. MIHooper
    Joined: Dec 9, 2017
    Posts: 48

    MIHooper
    Member
    from Philly

    Keeping the flathead six. After reading what y’all have to say and researching... it would be really counterproductive. Thanks!!!
     
    Hnstray likes this.

Share This Page

Register now to get rid of these ads!

Archive

Copyright © 1995-2021 The Jalopy Journal: Steal our stuff, we'll kick your teeth in. Terms of Service. Privacy Policy.

Atomic Industry
Forum software by XenForo™ ©2010-2014 XenForo Ltd.