The Stovebolt Site Forums The Parking Lot Big Bolts Name This Transmission?

Hey guys, Found this site and Im hoping someone here can help me. I got this transmission out of a 64' bus in a junkyard. The motor was gone and I cant locate a vin in the crumpled steel. There was a tag that said the chassis was a chevy. So Im wondering what kinda trans this is and where can i find a cluch kit and flywheel for it as Ill be using to build a tractor pulling sled. Thanks alot!
P.S. numbers on the side are:
2289S
A-AO-ER
on top: 219603

If its a 4 speed, it should be a SM420 which was an extremely tough transmission used from 48 to 67. I'm not able to identify it from the numbers. Try pulling the stick all the way toward the driver side door. If it goes into reverse when you pull it toward the seat, its a SM420. If it can be moved toward the dash as well as toward the seat, it could be a 5 speed Clark or New Process. 5 speeds were rare in buses unless it was a military bus.

Heres a link to the pics, Trans 1 is the one in question, if ya know what trans 2 is thats good too!

http://s422.photobucket.com/albums/pp302/slydewayscabbage/

Hy cabbage, tranny number 1 looks like a Clark 5 spd. to me possibly a 265V, or a 267V, with that bellhousing I think it may be out of a 1960 - 62 model, they had hydraulic clutches, and the throwout arm came out the right hand side of the bellhousing. Tranny number 2 looks like a 1947 - 37? crashbox 4 spd. [no syncros], hope that helps.

Great! do you guys know where a clutch for such a thing can be found?

It looks like a Clark to me also. The hydraulic clutch was a contraption that Chev used for a couple of years and it didn't really work out very well. I would throw away that clutch housing and use one that is made for a manual clutch unless you have a Chev that is set up for a hydraulic clutch. What engine are you using and what vehicle do you have?

Well this trans isnt going into any truck, Im gonna be using it to build a weight transfer sled for tractor pulling. The clutch will be a simple manual lever, that slave cyl is shot anyway, there wont be any engine, I just need a clutch for it so we have a way to stop the weight from moving to far.

You will have to use some kind of flywheel. Any clutch that will bolt on to your flywheel and discs that will fit the input shaft will work. The fact that it was originally a hydraulic clutch has nothing to do with the pressure plate and discs. It only replaced the mechanical linkage with hydraulics like the brake system. It worked fine until your fluid leaked out and the clutch pedal went to the floor.

Measure the diameter of the input shaft and the spline count and that should get you started, the clutch dia will be determined by the flywheel size, any truck clutch and brake supplier should be able to help, not your local auto parts house unless they have been around for a while. While your there at the clutch house tell them what your doing, maybe a little sponsorship help, like their name on your sled. Tractor pullers buy clutches.

Ok, i was just tryin to get an idea on what i had, seen some clutch suppliers online but they only list by make/eng size not by input shaft dimensions... so i figured if i knew what this was a little more id be better off.
haha i like the sponsorship idea!

The advantage to going local is they probally have someone that is knowledgable of what you want and you can actually talk to them. Also if we don't use them they will gradually disappear as they are doing now. Good luck on your project and give us some pis's when done, even better with a big o sponsor on the side.

http://www.ih8mud.com/tech/transnumbers.php

Trany 1 Here is the link I found that says it is SM420 any help on yrs and engine sizes guys I checked by the 3813389 number and found that

Trany 2 has the same casting number so you got two of the same transmissions