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Technical A very SHORT transmission

Discussion in 'The Hokey Ass Message Board' started by Frames, Oct 26, 2019.

  1. Frames
    Joined: Apr 24, 2012
    Posts: 3,128


    2019-10-26 15.35.51-1.jpg 2019-10-26 15.35.51-2.jpg 2019-10-26 15.35.51-3.jpg 2019-10-26 15.35.51-4.jpg misc 12-7-14 001.jpg Someone called me about wanting a very short trans. Old age is creeping up and these slipped my mind. A 55 and later Chevy. The rear plate is the tail shaft housing machined off. Shorten the tail shaft. A sealed bearing is installed. I use a 42-47 F1 yoke or a 3/4 ton 42-52 Ford truck yoke. The 1st picture is an X-Shift case with 55 and later Chevy gears and a 38 Chevy shifter. I have an X-Shift set up to use with a Ford/Chevy torque tube. 6 spline U-Joint. Not for sale. FOUR MORE PICTURES. F150 3 speed with JEEP shifter. All syncro and strong. 19" front to U-joint. 1937 Packard . Close ratio and Chevy 10 spline. 13" to joint. As strong as Cad-LaSalle. X-Shift for sprint car. 10" to joint. DISC BRAKES__KNOCK OFFS 008.jpg NUMBER 45-------SPRINT PARTS 006.jpg DISC BRAKES__KNOCK OFFS 007.jpg DISC BRAKES__KNOCK OFFS 009.jpg . The large tube is to protect the sprint car driver's valuables.
    Last edited: Oct 26, 2019
  2. 41rodderz
    Joined: Sep 27, 2010
    Posts: 5,207

    from Oregon

    Thanks for the tech. Love any tech.:)
    rod noken likes this.
  3. Paul
    Joined: Aug 29, 2002
    Posts: 15,032


    That should be able to handle at least a hundred foot pounds of torque
    kidcampbell71 likes this.
  4. Phil1934
    Joined: Jun 24, 2001
    Posts: 2,717


    Early '60's Ford pickup 3 speed is close [​IMG]
    Elcohaulic likes this.

  5. 51box
    Joined: Aug 31, 2005
    Posts: 923

    from MA

    Those mid-late 50’s Chevy 3 spds were used a lot in the day and in drag cars also. I had a 57 one in my dragster supercharged chevy on alcohol and used 2nd-3rd only and somehow never blew it up.
    31hotrodguy likes this.
  6. thintin
    Joined: Mar 24, 2006
    Posts: 223


    used in dirt mods in the northeast , also back in the 'day,......surprisingly bullet-proof behind some pretty stout small blocks.
    ottoman likes this.
  7. 1-SHOT
    Joined: Sep 23, 2014
    Posts: 1,926


    Biggest problem we had was pulling the brass out of the syncroniser. I haven't seen a X shift case in years. I split the case out of two of them behind my Buick and finely put a LaSalle box in it and no more trouble.
  8. Paul
    Joined: Aug 29, 2002
    Posts: 15,032


    Interesting, my only experience with them was having one chew itself to death on the way home from buying the truck it was in.
    With a worn out straight six no less.
    kidcampbell71 likes this.
  9. Frames
    Joined: Apr 24, 2012
    Posts: 3,128


    F Y I. I just added 4 more pictures. The ones at the top. One X-Shift picture with the stock tail shaft.
  10. Stovebolt
    Joined: May 2, 2001
    Posts: 3,319


    This one is a '35-'37 Packard 3 speed trans, and uses a 3/8" adapter plate to bolt up to a sbc bellhousing. Strong as all got out, ratios the same as a C4 trans - great transmission all round.

    Yes - I have 3 of them
    kidcampbell71 and 31hotrodguy like this.
  11. I had a short chevy 3 spd (57-58) in my dirt mod for 4 years behind a 500HP small block.. Its backup sat in the trailer.
    thintin and 31hotrodguy like this.
  12. Frames
    Joined: Apr 24, 2012
    Posts: 3,128


    X-Shift in the MSC circa late 50's modified. Almost finished. 33 Willys body is painted and all removable parts have been chrome plated. # 45 circa 1958 002.JPG 2014-12-07 09.55.30.jpg
  13. A Boner
    Joined: Dec 25, 2004
    Posts: 5,741

    A Boner

    Short transmissions......what kind of transmission do they use in the "BossHoss" trike motorcycles? I'm thinking they would be small and light and also SBC compatible. Might work in a small "T".
  14. the trike uses a real three-speed automatic transmission with reverse (something you use on a three-wheeler) and park. The shifter is down on the left side of the bike.
  15. Any tips on building one of these? We have the need for one in a semi OT project.
  16. lake_harley
    Joined: Jun 4, 2017
    Posts: 1,104


    I had a short Chevy 3-speed in a UMP modified too back in the late 90's. We were at more like 450 HP but never a problem with the tranny.

    On the downside, the 3-speed in my '63 Chevy II got rebuilt several times because of slamming through the gears, sometime at actual drag races and a lot of time making like a drag racer on the street.

  17. jimmy six
    Joined: Mar 21, 2006
    Posts: 7,187

    jimmy six

    See that step down after the clutch splines. Breaks. The pickup ones from 49 don’t. I’ve read here others did not have problems.... not me I broke them until I went to the 1/2 ton pickup ones.

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