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Offenhauser aluminum transmission case ???

Discussion in 'The Hokey Ass Message Board' started by flatheadkid1, Sep 3, 2012.

  1. flatheadkid1
    Joined: Jan 6, 2007
    Posts: 56

    flatheadkid1
    Member
    from OHIO

    Has anybody ever seen one of these trans cases made by Offenhauser. It uses saginaw 3 speed internals with a 37 chevy top shifter. Love to have one.
    Thanks in advance.
     

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  2. Didn't they call it the X Shift?
     
  3. hoop
    Joined: Mar 21, 2007
    Posts: 437

    hoop
    Member

    I had one back in !962.
     
  4. Wow, talk about rare!
     
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  5. young'n'poor
    Joined: Jan 26, 2006
    Posts: 1,026

    young'n'poor
    Member

    Wow that is neat! Did they make anything similar that used ford or other internals?


    Posted from the TJJ App for iPhone & iPad
     
  6. olcurmdgeon
    Joined: Dec 15, 2007
    Posts: 807

    olcurmdgeon
    ALLIANCE MEMBER

    had one in the sixties too. Had a '34 Chev pickup I used it in and if I remember right, I bought it from Honest Hisself! Would have been '61 or so. They were neat, let you keep closed drive shaft but have synchro gear set. And yes I think they were "x shift". Will have to check an old Honest catalog.
     
  7. DualQuad55
    Joined: Mar 5, 2005
    Posts: 1,319

    DualQuad55
    Member
    from Epsom, NH

    Did you sell it at Greatwoods a few years back?
    I have one in my collection. It uses the stock 55 style internals with a 37 shifter/plate setup. Also uses the 55 style open tailshaft housing.
    Essentially lets you put a 'modern' internal trans with a floor shift in your 55-up chevy.
     
  8. flatheadkid1
    Joined: Jan 6, 2007
    Posts: 56

    flatheadkid1
    Member
    from OHIO

    I am unaware of Offy making any other trans cases but I know that Chassis Research advertised an aluminum transmission case for Cad/Lasalle gears. I have no information on them and the pictures create more questions than answers. Another one I'd like to get my hands on.
     

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  9. DualQuad55
    Joined: Mar 5, 2005
    Posts: 1,319

    DualQuad55
    Member
    from Epsom, NH

    Offy made the housings and marketed them in a joint venture with the guy who designed it; Jim Lower.
    Pretty cool, but was a bit of effort compared to putting in a then new Hurst style floor shifter on the stock 3spd.
     
  10. Piper106
    Joined: Jul 29, 2006
    Posts: 115

    Piper106
    Member

    Related question. Were there any other aluminum cases for GM three speed transmissions?? Any factory aluminum cases for a three speed??
     
  11. PackardV8
    Joined: Jun 7, 2007
    Posts: 663

    PackardV8
    Member

    Also, most of the old top shift boxes didn't shift as well as the Hurst side shift conversion. I've done a few on Borg-Warner T86 using a Jeep top plate. They will not speed-whoop as well as a Hurst.

    jack vines
     
  12. hoop
    Joined: Mar 21, 2007
    Posts: 437

    hoop
    Member

    Nope. Sold the whole deal to a friend that put it in a 55 pontiac with a v8 Pontiac,after that no clue where it ended up.
     
  13. Andy
    Joined: Nov 17, 2002
    Posts: 3,345

    Andy
    Member

    I had a project to make an X shift. I found a couple of '30's cases and shifters. I welded a plate on the tail housing side and had the bearing hole machined out. I would have to redrill the bell housing for the early case. I needed to drill the holes in the rear mount but never finished it up. The later gears fit the early case. I even wanted to make it an overdrive.
     
  14. Bruce Lancaster
    Joined: Oct 9, 2001
    Posts: 19,586

    Bruce Lancaster
    Member

    One of the articles on the X box, either the one in HRM or the Petersen transmission book, mentions the process that led up to it, converting an earlier Chevy box and shifter for '55 type gears and open or closed drive...
    I think it is rare because of timing. It was likely too expensive and a bit complex as a project for the average guy with a Chevy street car in comparison to just buying a floor shift kit, racers were moving on to Cad/Lasalle or Packard because Chevy and Ford boxes were too weak for the engines of the day in racing, and within a couple of years the T-10 started the four speed period and no one wanted anything else.
    The availability of much bigger engines both for Rods and for stockers at this time period made any Chevy 3 speed too weak for anyone that could afford this thing!
     
  15. DualQuad55
    Joined: Mar 5, 2005
    Posts: 1,319

    DualQuad55
    Member
    from Epsom, NH

    Bruce, I agree. I think by time it made production the T10 was already out. Didnt take long to start finding them at junk yards and such. Making the X shifter essentially obsolete before it could take off.
    Really neat piece to have now days though.
    I have both the little page version and full size print of the Peterson publication about transmissions. Neat history, just not fast enough to beat borg warner to a better setup.
     
  16. F&J
    Joined: Apr 5, 2007
    Posts: 9,228

    F&J
    Member
    from CT

    Most hambers would not know that top shifted transmissions were used in race type 55 and 56 chevy cars, in that small window of time before the 4 speed came out.


    There is a reprint scan on hamb ,of a 56 HotRod mag article, showing how to put a LaS or 37 Buick top shift into a 55 chevy. that's crazy stuff. I think if you showed up with one in a 55, you'd get called rat rod.
     
  17. DualQuad55
    Joined: Mar 5, 2005
    Posts: 1,319

    DualQuad55
    Member
    from Epsom, NH

    yes, they used the Lasalle, Buick and even Packard topshift trans in most highpowered drag cars back then as the stock 55 style trans was not strong enough for constant abuse. Plus until the early 60s the 4spds were not as cheap to come by as a 20 yr old 3speed.
    But, you'll find that many guys who did real well racing preferred the sideshift style cad/lasalle box with a hurst style shifter as it could be shifted faster than a top shift 37 style.
     
  18. Mike Brock
    Joined: Jul 24, 2010
    Posts: 1

    Mike Brock
    Member

    I had a Offenhauser x case trans in my 32 5 window in 1964. It used all the 55 thru 57 3 speed guts and tailshaft. You could use the overdrive unit with it also. My buddy bought the case and was able to get nos 37 chey top cover and forks. Traded a 4 speed for it. Sweet set up behind a 283 fuelie Vet motor, it shifted great. I have been looking for one for the last 15 years.
    Mike
     

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