Gain extra benefits by becoming a Supporting Member Click here find out how!
Classic Performance Products Classic Parts
American Auto Wire Classic Industries
Chevs of the 40sDanchuk Catalog
Hellwig Products IncPerformance Rod & CustomEcklers AutoMotive
Nu-Relics Power WindowsRain Gear Wiper Systems
Impala Bob's Bob's Chevy Trucks Bob's Chevelle Parts Bob's Classic Chevy



Username Post: Powerglide Rear Swap Question        (Topic#354748)
FortyNineCoupe 
Contributor
Posts: 423
FortyNineCoupe
Loc: Baltimore, MD USA
Reg: 10-03-09
01-07-19 07:24 AM - Post#2756771    

Hi folks: Is a '54 Powerglide rear going to bolt right into the place where my '49 manual 4.11 comes out without anything needed moved or modified?
Thanks in advance.

Mike
'49 Styleline DeLuxe Sport Coupe


 

Chevs of the 40s

eplantage 
Frequent Contributor
Posts: 2171

Loc: Southern MN
Reg: 03-15-04
01-07-19 10:34 AM - Post#2756781    
    In response to FortyNineCoupe

Yes, it would be a direct bolt in.

Age: 65 at the moment
1950 Chevrolet Sedan Delivery
1953 BelAir Convertible Project
2002 Heritage Springer FLSTSI
1930 Model A Standard Coupe


 
FortyNineCoupe 
Contributor
Posts: 423
FortyNineCoupe
Loc: Baltimore, MD USA
Reg: 10-03-09
01-07-19 11:24 AM - Post#2756786    
    In response to eplantage

Thank you Ed. I thought it was and then someone told me something about having to move perches on it and I thought it didn't sound right. I just want to make sure I'm going down the right path with this swap before I start making the plan and getting into it. What I'm thinking right now is generally cleaning the replacement and installing an Oakie bushing, doing the swap and then doing the brakes after the swap.

Mike
'49 Styleline DeLuxe Sport Coupe


Edited by FortyNineCoupe on 01-07-19 11:26 AM. Reason for edit: No reason given.

 
2blu52 
"18th Year" Silver Supporting Member
Posts: 18737
2blu52
Age: 85
Loc: Montana
Reg: 03-12-02
01-07-19 11:57 AM - Post#2756789    
    In response to FortyNineCoupe

Or you can jusst swap out the differential gears and torque tube and leave the housing for the 4:11 in place.

"PEACE IS THAT GLORIUS MOMENT IN HISTORY WHEN EVERY ONE STANDS AROUND RELOADING"

THOMAS JEFFERSON


 
DZAUTO 
Senior Member
Posts: 8608

Loc: Mustang, OK, USA
Reg: 12-25-99
01-07-19 01:34 PM - Post#2756791    
    In response to 2blu52

The swap is TOOOOOOOOOOOOOOOOOOO EASY. There are enough people who know MOST of the answers and this would be a good place to get correct information.

For 49-54 pass cars, ALL that needs to be done is to pull the axles, remove the 10 nuts around the differential case, pull out the 4.11 rear/torque tube, bolt in the 3.55 from the 54 and button everything back up.

Now, with that said, here are two additional observations and comments.
First, you CAN swap the ENTIRE rear axle housing assembly/ differential/torque tube as a complete assembly ---------------- it would be a direct, 100% bolt in swap (and NO, NO, NO spring perches for 49-54 axle housings do not have to be relocated!!!!!!!!!!!! Ummmmmmmmmmmmmm, I'd stay away from the guy that told you that).
Next, while installing the 54 rear---------------IF YOU HAVE THE COMPLETE REAR -------------- I'd recommend upgrading the brakes to the 54 Bendix brakes from the 54 rear (backing plates to drums).



 
FortyNineCoupe 
Contributor
Posts: 423
FortyNineCoupe
Loc: Baltimore, MD USA
Reg: 10-03-09
01-07-19 09:17 PM - Post#2756831    
    In response to DZAUTO

Thanks Tom and everyone. I was originally thinking of just doing the torque tube and gears but I have a complete unit with the brakes so I'm thinking we'll just go that route. I'll look for some backing plates and brakes for the front later. Hopefully this is the year of the 3.55 rear.


Mike
'49 Styleline DeLuxe Sport Coupe


 
DZAUTO 
Senior Member
Posts: 8608

Loc: Mustang, OK, USA
Reg: 12-25-99
01-07-19 09:35 PM - Post#2756834    
    In response to FortyNineCoupe

  • FortyNineCoupe Said:
Thanks Tom and everyone. I was originally thinking of just doing the torque tube and gears but I have a complete unit with the brakes so I'm thinking we'll just go that route. I'll look for some backing plates and brakes for the front later. Hopefully this is the year of the 3.55 rear.




Sounds like an excellent plan!
With a later "built" 235, or even a 261, in additional to the 3.55 rear, it will be a much nicer cruiser as well as more enjoyable Interstate cruiser.
An additional minor upgrade would be a 53-54 3sp tranny.



 
FortyNineCoupe 
Contributor
Posts: 423
FortyNineCoupe
Loc: Baltimore, MD USA
Reg: 10-03-09
01-08-19 07:07 AM - Post#2756860    
    In response to DZAUTO

Hey Tom: What are the advantages to the '53/'54 transmission? I think it was your steering box rebuild we followed a couple of years ago - worked out great!

DSC07820 by Mike, on Flickr

DSC07827 by Mike, on Flickr

Mike
'49 Styleline DeLuxe Sport Coupe


 
FortyNineCoupe 
Contributor
Posts: 423
FortyNineCoupe
Loc: Baltimore, MD USA
Reg: 10-03-09
01-08-19 07:22 AM - Post#2756861    
    In response to FortyNineCoupe

I just looked through some of the photos from a couple of years ago. This was the view just about two years ago.

DSC06806 by Mike, on Flickr

DSC07026 by Mike, on Flickr

DSC07032 by Mike, on Flickr

Mike
'49 Styleline DeLuxe Sport Coupe


 
DZAUTO 
Senior Member
Posts: 8608

Loc: Mustang, OK, USA
Reg: 12-25-99
01-10-19 01:05 PM - Post#2757045    
    In response to FortyNineCoupe

  • FortyNineCoupe Said:
Hey Tom: What are the advantages to the '53/'54 transmission? ------------------------- ------------------------- ------------------------




The 2nd design 53 (and I don't know where the split occurec between 1st and 2nd design) and 54 transmissions had two upgrades that were a benefit to drivability.
The 2nd gear and clutch hub (2nd/3rd gear synchronizer) were improved and the joining of the main shaft and input gear were change from one row of roller bearings to two row of roller bearings (and this continued up through the end of this Saginaw design in 65).
By having two rows of roller bearings between the main shaft and the input gear, the two shafts were more stabilized and and greatly reduced the wobble between them. Prior to this upgrade (with only one row of rollers between the shafts), these early 3spds were often prone to jumping out of 3rd gear. Plus, another upgrade that was commonly done when rebuilding one of these early 3spds, was to install a rearend pinion shim (55-64 style rearend) BETWEEN the input gear and input bearing. This simple modification shoved the input engagement splines deeper into the synchronizer hub for a more secure engagement of 3rd gear.

Now, with all of this said, if it is desirable to retain an ORIGINAL 49-52 (and 1st series 3sp) transmission main case, and if 53-54 guts can be located, then ALLLLLLLLLLLLLLL the 53-54 guts can be installed into the earlier case.

There is a lot of stuff that I have forgotten about these early drive lines because I switched (WHICH I GREATLY REGRET NOW!!!!) from a 6cyl to a V8 in 67. My last 6cyl was a 261 truck engine with the Corvette 3carb/dual exhaust setup. I would NEVER have one of those Corvette 3carb setups again, BUT, I would like to have a nice 2carb/Corvette dual exhaust setup on a 261 (bored/stroked to 283) on a 51-52 again (I still have the Corvette exhaust manifold).








 
FortyNineCoupe 
Contributor
Posts: 423
FortyNineCoupe
Loc: Baltimore, MD USA
Reg: 10-03-09
01-12-19 07:42 AM - Post#2757183    
    In response to DZAUTO

Wow - thanks Tom. I had no idea. I've been running the stock '49 three speed with the '55 235 since 2008 with no trans issues (knock on wood) but I'll keep this filed away. I think that I may be able to pick one up along the way in case I need to go that route in the future.

Mike
'49 Styleline DeLuxe Sport Coupe


 

Chevs of the 40s

Icon Legend Permissions Topic Options
Report Post

Quote Post

Quick Reply

Print Topic

Email Topic

463 Views
FusionBB
FusionBB™ Version 2.1
©2003-2006 InteractivePHP, Inc.
Execution time: 0.08 seconds.   Total Queries: 16   Zlib Compression is on.
All times are (GMT -0800) Pacific. Current time is 08:02 AM
Top