3 speed transmission Questions

[Boody]

I recently found a motor for my truck. It came with transmission bellhousing pedals everything attached. My question is I have another transmission 3 speed it seems to be the same it would there be any problem swapping the tops out? I like the shifter length  better. But I want the emergency  brake attached to the transmission looks better.  Second  transmission  doesn't  have hole for mount. 

     Thanks Dave

[Boody]

Has decent  compression was stored  in shop. Trying to get sp as re now. 

[1949 Wraith]

If they are both 3 speed transmissions the shifters should probably interchange. Looks like an easy swap to see if they work, six bolts to remove on each.

[Boody]

Thanks will try it. Do I need a gasket or can I use silicone ?

[1949 Wraith]

Original gaskets might still be intact if you take it apart carefully.

[Tooljunkie]

I used silicone. And i went from column shift to floor shift. My park brake was mounted to shifter casting, i dont recall if its different from yours. 

[Tooljunkie]

I used silicone. And i went from column shift to floor shift. My park brake was mounted to shifter casting, i dont recall if its different from yours. More info here. 

 

[Boody]

One of the transmissions is missing the threaded hole as seen on the bottom left needed for the emergency brake to mount on the transmission. 

[Boody]

If I tilt the transmission  like this should  any fluid drip out  of the shaft ? Or is there a seal that is leaking ? 

  Thanks Dave

[Tooljunkie]

There is a seal of some sort. But it only seals when its supported by crankshaft. Setting it like that may  cause a leak. 

[Boody]

Thanks  was low on fluid looks clean  inside didn't see any metal and gears looked good. What type of fluid should I put in ? Any recommendations 

[Tooljunkie]

Heavy gear oil. I used 80/90

should have used 140,but none available locally. 

[Boody]

Thanks

[Boody]

I recently took the tops off the two Transmissions that I have. They look different  on the inside,could 1 be Synchro and the other not?

[billrigsby]

 

One is definitely a Synchro transmission.......

.......the other not so much

Edited October 11, 2020 by billrigsby

[Boody]

Thanks for the the reply . I guess  I'll be using  the synchro one . ?

[DJ194950]

The original ( #1) post pic may also be a "syncro" trans but a later type called a pin type syncro style. I saw the  post earlier and did respond as I was not sure about this to post. Later automotive Mopar  trans made a switch to the "pin" style around 53-54? again not sure.

 

Want someone who really knows these differences to respond before you make a final determination as which to use.

 

DJ

[kencombs]

Both synchro as mentioned earlier.  Pin and strut types were common in the 50s.  Just different ways to accomplish the same thing.

No real difference AFAIK.  Both worked fine and one didn't seem to fail more often than the other..

[Boody]

Thanks for the the reply . I guess  I'll be using the 2nd one it has the mount needed for the E brake to mount to the trany.

[billrigsby]

2 hours ago, kencombs said:

Both synchro as mentioned earlier.  Pin and strut types were common in the 50s.  Just different ways to accomplish the same thing.

No real difference AFAIK.  Both worked fine and one didn't seem to fail more often than the other..

 

Thanks, did not know that, I stand corrected and more knowledgeable!  ?

[1949 Wraith]

3 hours ago, Boody said:

Thanks for the the reply . I guess  I'll be using the 2nd one it has the mount needed for the E brake to mount to the trany.

I have a later model tranny that I was thinking about using on my '42. I was thinking of drilling and tapping where the posts stick out of the tranny for the tranny mount e brake.

[Boody]

If I had to I could the same . I like the look of the e brake mounted to the trany so i have a spare if i need it.