Does 1953 Savoy transmission fit to D24? - YES, it does!!!

[Uncle-Pekka]

I received a hint of a '53 Savoy parts car, which may have over drive installed.

What do I have to do to install the overdrive and possibly savoy 3rd member to my D24?
Should I save the complete power train including propeller shaft?

Edited May 31, 2014 by Uncle-Pekka

[Plymouthy Adams]

swap input shaft on the tranny from the D24 to that of the P24..factory OD P24 would have a 4.1 third member..personally I would not change the rear gear..

[Plymouthy Adams]

AS a side note..somewhere in this era the rear axle spline count changed..i do not know what and when or the real fifference as II always default to a more modern rear carrier..so there is a chance this hoghead may not be a swap as it is anyway..maybe Young Ed..can chime in on this..I just never commit this to memory because is is irrelevant data for my builds.

[Young Ed]

I don't know the exact cutoff either. Its somewhere right in the 53-54 range. OD will work just fine with a 3.90 rear gear though.

[Plymouthy Adams]

If you were to go to the 4.1 you will lose right off the top 8MPH approx in third gear a the same crusing RPM compared to the 3.9 ratio...

[Uncle-Pekka]

Thanks Tim, Ed.

I recall having read here, that '53 rear axle is less in width than D24, thus complete axle does not swap either...

For clarity: My D24 has 4.1:1 rear ratio as it is now.

4.1:1 still does bother me - would prefer 3.73:1 to it.

Edited August 20, 2012 by Uncle-Pekka
added D24 rear ratio, erased dumb question

[Uncle-Pekka]

The Savoy has the OD, indeed.

Here's a picture:

The cylindrical part near brake drum low left - is that the governor?

Where the solenoid should be?

What do I need to take along but the transmission?

- kickdown switch

- relay (on firewall?)

- on/off lever (in dash?)

- anything in/on the distributor?

[DJ194950]

Get all the bits mentioned. But there is nothing special on the dizzy for the OD.

Great find!

Best to ya!

Doug

[Uncle-Pekka]

What if the solenoid is missing or broke - Can I get one somewhere and what does it cost?

Links to sources?

[Jim Yergin]

Try here:

http://www.fifthaveinternetgarage.com/parts/parts_counter_3.html

or

http://www.studebakerparts.com/studebakerparts/store/s/agora.cgi?product=elecj&cart_id=3338.10710

(Studebaker but used the same Borg Warner overdrive).

or call George Asche

1693 Fertigs Road

Venus, PA 16364

814-354-2621

Jim Yergin

[Dodgeb4ya]

AS a side note..somewhere in this era the rear axle spline count changed..i do not know what and when or the real fifference as II always default to a more modern rear carrier..so there is a chance this hoghead may not be a swap as it is anyway..maybe Young Ed..can chime in on this..I just never commit this to memory because is is irrelevant data for my builds.

Plymouth rear axle shafts had 10 splines till 1952 then 16 splines from 1953 on.

Bob

[Plymouthy Adams]

there you go..thanks for this info...I will probably not remember this so ..I made this note in my tech manual..

[Uncle-Pekka]

It says "R10 G -1" on the cast. Does it make sense to you guys?

I know, that I am asking stupid questions, but that's because I've never seen one of these mounted in a car before...

Tim told to swap the pinion shaft from my existing transmission to the OD...

I suppose he refers to the main shaft (part #43 in below drawing)?

Will the OD unit replace the extension housing (part #46) in standard assy?

Now I also realize why nobody commented to my question on shortening the propeller shaft - obviously no need for modification...

To swap the main shaft I suppose I need to take apart the over drive unit and the D24 transmission and assembly them together?

[Plymouthy Adams]

read a bit closer to my post..big difference between a pinion shaft and the INPUT shaft which is part number 54 in your IPB

[Uncle-Pekka]

Ok - sorry, Tim -

More dumb questions:

Is the '53 P24 3-speed the very same units as my '48 D24?

Thus apart the mentioned input shaft everything else has same connecting dimensions when I swap the entire unit?

[Plymouthy Adams]

if I were going to cobble together a setup I think I would be looking for a hy-drive three speed and get the fast first and fast second ratios...get the extra revs between shifts....we have had a couple people do these very swaps..D24 and adding a OD to a Hy-drive unit...search of the forum may well get you other info and or these people may chime it...I have never doen the swap and mentioned only what I because of what was posted here in the past..

[DJ194950]

Blueskys website is a great reference site to look at for these OD trans.

He went through many changes to get a working one for his car!

SEE: 50plymouth.com Look at the transmission section for Great info.

Best,

Doug

[Plymouthy Adams]

Blueskies was a lesson in getting one to perform..not the mix and match of components D24 to P23 and up OD's where the fluid drive is not an issue..we have a goodly number of threads on here of OD installs mixing and matching amoung years and applications..

not knocking Blueskies but this is a different horse..

[Young Ed]

Tim Its the opposite horse. Pete bought an OD out of a dodge and converted it the opposide way to a non fluid drive setup. Pekka there are 2 types of syncros. If you are a lucky man and your original trans and OD trans are matching types you are good to go on swapping inputs. If they don't match you'll need to find one that does. The reg trans and OD are the same length so the driveshaft is good to go. The speedometer cable will be on the opposite side probably and might require a longer one.

[Plymouthy Adams]

it had been so long..I should have looked that up...as I said..we have so many OD threads here of mix and match its a smorgasborad but you need to go on walkabout inside the froum to get the info..

[DJ194950]

By refering him to blueskies site, my idea was only a one place spot idea of the possible fitments/problem areas, rather than hours spent, searching previous posts on search the forum.

From my experience and reading the posts here for several years, the Whole R-10 G trans fits without modifications. The only change that i have become aware of is sometimes changing the shift levers.

That only applies if the trans came from a non torque converter type trans setup, where the imput shaft is longer (but can be changed!) per Pete(blueskies).

[Plymouthy Adams]

good call on your part..I had forgot he did the same thing only in reverse...

Edited August 20, 2012 by Tim Adams

[Uncle-Pekka]

Doug, Ed, Tim,

Thanks for advice. I will read through Pete the Blueskies' pages.

I found some info on HyDrive at Allpar.com, but it was confusing. I got impression that it will be the most troublesome unit to merge to older (or newer) models of them all...(?) Are there any other advantanges but faster second gear? All I look for is fast top gear for smoother hi-speed cruising on hiway. Slow acceleration will be no issue for me.

[Plymouthy Adams]

just use the tranny part of the the hy-drive..not the torque convertor..you get the fast gear set...hy-drive is still a three on the three..

[Uncle-Pekka]

Up-date:

I bought this tranny. Seems to be mechanically OK condition. Have only cleaned it externally by now.

I would rather not take it apart completely. How to check synchro rings without pulling OD housing from 3-speed housing?