making a OD work
Fleet Owner
Joined: Jul 2004
Posts: 27,298
Likes: 1,059
From: NM
Well maybe thats the way I should be thinking about as I have a good working truck three speed , it just needs overdrive . It's just that the older I get , the harder it is to get my fingers in those tight places in transmissions . L.O.L. OK , Am I understanding this right . I can take all of the overdrive parts tailshaft , overdrive adapter plate , mainshaft and install in the truck three speed . Keeping the truck input shaft and all of the truck gears ,misl parts that are inside the truck transmission main case now ? The reason I ask is I have been told someplace other than F T E that the overdrive transmissions have there own unique main case that is different than a standard three speed . It would be great if I was told wrong .
Cargo Master
Joined: Apr 2009
Posts: 3,038
Likes: 4
From: South west Idaho
Thanks , I'l put that job on the list to do after two other projects get farther along .
Cargo Master
Joined: Apr 2009
Posts: 3,038
Likes: 4
From: South west Idaho
I checked in on the T / 5 , not a cheap way to go ,besides if I can't do the job myself what fun is that . My cousin has a T/5 in his 56 car .292 Y/B , I guess I could ask him how he likes it .
Cargo Master
Joined: Apr 2009
Posts: 3,038
Likes: 4
From: South west Idaho
Thanks , I never thought of that . Thats what I like about F T E , somebodys tried it or have good information about doing it and is willing to share . JIM 
New User
Joined: Nov 2006
Posts: 11
Likes: 0
OD tranny
CBASS139,
I was out in the shop today and looked at the OD tranny I plan to put behind the Y block in my 56 PU. The following was found on the tranny and the OD.
Transmission is a 7 1A-7006-A with a 47 J (casting date perhaps). The side cover was a TAAA 7222-A.
The OD unit is a W.G. Div R10F-1. On the boss for the OD engagement lever mounting is stamped E 742. Also there is a Q (stamped) then a cast 3 then a cast 4-28 near the end of the tailshaft.
As I recall when I was looking at OD trannies, there was not only a difference in the input shaft length and diameter, but also the collar that bolts to the front of the transmissions outside diameter between the car trannies and the truck trannies. I think the car tranny may have had a bigger diameter collar or it may have been the other way around. It may have been that the collar diameter wouldn't fit into the truck bellhousing I am using.
When I asked about swaping input shafts there was something that wouldn't work, but I can't remember what it was now. Good thing that I am retired, I guess.
There is a spacer between the tranny and OD which the solonoid is bolted to. I couldn't find any number on the spacer.
I hope this may help you in your quest,
Frank
SW Orygun
I was out in the shop today and looked at the OD tranny I plan to put behind the Y block in my 56 PU. The following was found on the tranny and the OD.
Transmission is a 7 1A-7006-A with a 47 J (casting date perhaps). The side cover was a TAAA 7222-A.
The OD unit is a W.G. Div R10F-1. On the boss for the OD engagement lever mounting is stamped E 742. Also there is a Q (stamped) then a cast 3 then a cast 4-28 near the end of the tailshaft.
As I recall when I was looking at OD trannies, there was not only a difference in the input shaft length and diameter, but also the collar that bolts to the front of the transmissions outside diameter between the car trannies and the truck trannies. I think the car tranny may have had a bigger diameter collar or it may have been the other way around. It may have been that the collar diameter wouldn't fit into the truck bellhousing I am using.
When I asked about swaping input shafts there was something that wouldn't work, but I can't remember what it was now. Good thing that I am retired, I guess.
There is a spacer between the tranny and OD which the solonoid is bolted to. I couldn't find any number on the spacer.
I hope this may help you in your quest,
Frank
SW Orygun
Fleet Owner
Joined: Jul 2004
Posts: 27,298
Likes: 1,059
From: NM
The front bearing retainer would be the collar you refer to, and that may not be a problem in this case, as long as the bolt pattern in the retainers is the same. This is because he would be swapping both the input shaft and the retainer.
The spacer is actually part of the OD, it's where the engagement locking mechanism is.
The spacer is actually part of the OD, it's where the engagement locking mechanism is.
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Cargo Master
Joined: Apr 2009
Posts: 3,038
Likes: 4
From: South west Idaho
Well ,cbass139 , I hope you have got enough information to do what you want to do . I believe with all the help thats came in I have . Due to all the problems that may come up and the expense of a T / 5 , I am going another way . I will use the car overdrive , clutch housing and all clutch, flywheel components . Make a bracket for the clutch slave cylinder . Build a transmission mount and engine side mounts like the cars have . I allready have the car parts to do away with the pickup front motor mounts . Building mounts is not all that hard . It would have been nice to have the heavy duty three speed with overdrive behind it . I want to thank everybody for the help , but don't stop now as ' cbass139 ' may still need some help . JIM 
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