Technical A very SHORT transmission

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. . The large tube is to protect the sprint car driver's valuables.

 

Thanks for the tech. Love any tech.

 

That should be able to handle at least a hundred foot pounds of torque

 

Early '60's Ford pickup 3 speed is close

 

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.

 

used in dirt mods in the northeast , also back in the 'day,......surprisingly bullet-proof behind some pretty stout small blocks.

 

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.

 

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.

 

F Y I. I just added 4 more pictures. The ones at the top. One X-Shift picture with the stock tail shaft.

 

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

 

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.

 

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.

 

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".

 

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.

 

Any tips on building one of these? We have the need for one in a semi OT project.

 

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.

Lynn

 

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.