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Technical Overdrive ID

Discussion in 'The Hokey Ass Message Board' started by anthony myrick, Jan 5, 2022.

  1. anthony myrick
    Joined: Sep 4, 2009
    Posts: 10,053

    anthony myrick
    Member

    Trying to find info on this OD set up.
    Google didn’t work. It’s smaller looking than the bigger truck units I’ve seen. (Appears that way)
    Was removed from a late 40s Willys product
    7DF6D917-BB68-4E81-A7C2-3A12EB50DA6E.jpeg

    806029DD-1950-4D77-A023-0052D235503E.jpeg
     
    Last edited: Jan 5, 2022
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  2. squirrel
    Joined: Sep 23, 2004
    Posts: 50,932

    squirrel
    Member

    when you turn shafts and count turns and shift it, what does it do?

    and what size U joint yokes does it have?
     
  3. squirrel
    Joined: Sep 23, 2004
    Posts: 50,932

    squirrel
    Member

    and does it have a PTO cover or two on the sides we can't see?
     
  4. anthony myrick
    Joined: Sep 4, 2009
    Posts: 10,053

    anthony myrick
    Member

    I only have pics.
    the Willys product would have has a Dana 41 or 44
     

  5. squirrel
    Joined: Sep 23, 2004
    Posts: 50,932

    squirrel
    Member

    Well...when you get your hands on it, tell us more. Looks interesting.
     
  6. anthony myrick
    Joined: Sep 4, 2009
    Posts: 10,053

    anthony myrick
    Member

    It does look interesting
    But it’s 4 hours away. That’s ok. Would just like to know more about it. The owner doesn’t know much
     
  7. squirrel
    Joined: Sep 23, 2004
    Posts: 50,932

    squirrel
    Member

    well, he's in a position to figure it out...I guess he's not into this stuff if he hasn't done that already?
     
  8. gary macdonald
    Joined: Jan 18, 2021
    Posts: 208

    gary macdonald
    Member

    Here’s something to consider , I think 1309F355-D929-4E8D-90CE-955362F74E4F.jpeg
     
  9. anthony myrick
    Joined: Sep 4, 2009
    Posts: 10,053

    anthony myrick
    Member

    Thanks.
    I’ve looked up spicer ODs and haven’t found one that looks like this.
    And nothing comes up under Dana
     
  10. anthony myrick
    Joined: Sep 4, 2009
    Posts: 10,053

    anthony myrick
    Member

  11. Beanscoot
    Joined: May 14, 2008
    Posts: 2,356

    Beanscoot
    Member

    The font on this tag looks more modern than 1940s:

    [​IMG]
     
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  12. banjeaux bob
    Joined: Aug 31, 2008
    Posts: 6,200

    banjeaux bob
    Member
    from alaska

    I've never seen one. Looks cool. I doubt Chelsea - Dana still services it though. I've dealt with Watson boxes and Brown -Lipe (essentially Spicer). I currently have a Spice 5831 three speed waiting for parts. However, that unit is for ton and a half - 2 ton trucks.
     
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  13. anthony myrick
    Joined: Sep 4, 2009
    Posts: 10,053

    anthony myrick
    Member

    Yep.
    I’m just going off the info given.
    It resembles some of the smaller auxiliary transmissions from the 40s and 50s. Those were smaller than the monsters I’ve been around
     
  14. anthony myrick
    Joined: Sep 4, 2009
    Posts: 10,053

    anthony myrick
    Member

    I familiar with spicer and brownie boxes.
    This one looks smaller.
    If it is a Dana/spicer4800 then it’s around 50 pounds. A lot lighter than the spicer bigger auxiliaries
     
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  15. banjeaux bob
    Joined: Aug 31, 2008
    Posts: 6,200

    banjeaux bob
    Member
    from alaska

    Some of the Watson boxes are as small as the one posted. The one posted looks like some of the drive through PTO's I've worked on. Hi-Lo- Neutral. Neutral for using the pto while the vehicle is stationary. I'm going to get in touch with our Chelsea people today to see if tis unit is still available or servicable.
     
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  16. banjeaux bob
    Joined: Aug 31, 2008
    Posts: 6,200

    banjeaux bob
    Member
    from alaska

     
  17. gary macdonald
    Joined: Jan 18, 2021
    Posts: 208

    gary macdonald
    Member

    I think I saw a racing hydr boat running one to overdrive the prop , a long time ago .
    Kinda cool and would go nice behind my 8ba open drive truck ?
     
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  18. anthony myrick
    Joined: Sep 4, 2009
    Posts: 10,053

    anthony myrick
    Member

    It is a 4800
    No info other than gearing so far.
    And that it was designed for half ton trucks
     
  19. Truckedup
    Joined: Jul 25, 2006
    Posts: 4,427

    Truckedup
    Member

    A friend put a two speed auxiliary gearbox in a late 30's GMC truck. He turned it around for use as an OD...He had inspected all the internal parts ...The box howled so loud it was scary..Don't know if it was a Brown-Lip, Spicer or whatever..
     
  20. 51504bat
    Joined: May 22, 2010
    Posts: 3,396

    51504bat
    ALLIANCE MEMBER

    I had a Watson under, neutral, direct, and over unit in a '40 1 1/2 ton Ford. Big heavy sucker with with a power take off option. Who knows if it was noisy. The whole dang truck was noisy. But the over gearing actually made the truck somewhat driveable. Can't image using 1st under unless you needed to get out and push at the same time.:cool:.
     
  21. anthony myrick
    Joined: Sep 4, 2009
    Posts: 10,053

    anthony myrick
    Member

    I have a Doug Nash OD mounted to a th400.
    Nice simple set up. Makes a cool noise.
     
  22. BamaMav
    Joined: Jun 19, 2011
    Posts: 5,487

    BamaMav
    Member
    from Berry, AL

    Back when I ran a pulpwood yard, there was a guy who had F350 with a C6 automatic. It wasn't geared low enough for him, so he took a 3 speed manual trans out of something and attached it to the C6 as an auxiliary. Low on the 3 speed gave him a grandma gear, and high was direct so his highway speed was the same.
     
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