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Username Post: Torque tube switchout        (Topic#251275)
BOBDAWG 
Member
Posts: 93
BOBDAWG
Loc: Wildomar,CA.usa
Reg: 03-01-03
10-20-10 07:35 AM - Post#1992266    

Hey Road Runner, Glad you found your way here to Chevy Talk. I E-Mailed you a while back about your torque tube switch out but got no response. I have a couple of questions, I already have a complete rear end from a 53 chev. with power glade trans, what problems will I have in doing a switch out like this? Did you keep the original clutch, bell housing and floor mount starter switch? will the original clutch hold up to the added horse power of my 1958-61 235 6 cyl. and higher geared Rear end? Did you change the front bushing? Thanks



 




Road Runner 
Forum Newbie
Posts: 86
Road Runner
Loc: CA Mountain Desert
Reg: 02-07-07
10-20-10 09:13 AM - Post#1992309    
    In response to BOBDAWG

Just start a new topic.
I can give you my answers there, others will join in and exchange ideas and it's easier to find later for others searching for the same answers.

I have split the thread so that it will get a better response. I don't know whether the posting relates to a pre-'48 or later car, so have left it here but it may have to be moved to another forum. David the Mod


On the road every day ...

1948 Coupe

1952 Truck


 
Road Runner 
Forum Newbie
Posts: 86
Road Runner
Loc: CA Mountain Desert
Reg: 02-07-07
10-20-10 11:51 AM - Post#1992393    
    In response to Road Runner

How neat. Good idea.

The later PG torque tubes and 3.55 rear gears will fit 41-48 chevs.

There are other ways to do this, but to remove the axle seals and bearings, I use a slide hammer and for reinstallation with new ones I used a bearing installer kit. Both tools can be rented for free at the local parts store, if returned without damage.

New seals are a must, but you may be able to reuse the bearings, if they are not worn.
However, if they are, even new seals can start leaking and then you have to do this all over again, so new bearings may be the best way to go. Napa always has good quality USA made parts.

Once the axles, bearing and seals are out and the u-joint is disconnected (see 40s or 50s manuals), you can just unbolt the gear section from the axle housing and slide out the old torque tube.

I used two car jacks with wheels...


Then clean the axle housing inside and just install the PG torque tube and put it all back together in reverse.
Use new axle housing gaskets and axle/drum gaskets.
Also time to replace the u-joint bearings or get a new u-joint. And fix any wheel cylinder leaks and install new brake shoes, if they are old.


If you replace the clutch, any transmission and vacuum repairs/overhauling should also obviously be done at this stage.

I kept the original bellhousing and used a 11" clutch/flywheel, which required some grinding inside the bellhousing to fit.
Today I would just go with a 10" clutch, which is fine with a street 261/235.

Definitely replace the old with a new pilot bushing.
You can fill the old bushing with grease or wet tissue paper, insert a tight fitting long bolt and strike with a hammer - the old bushing should just pop out.
And also use new flywheel bolts.


There you go.
All this is quiet easy and it was the first time I did this.
Just be careful with the slide hammer - it has a lot of force - just keep your fingers clear when sliding...




On the road every day ...

1948 Coupe

1952 Truck


 
BOBDAWG 
Member
Posts: 93
BOBDAWG
Loc: Wildomar,CA.usa
Reg: 03-01-03
10-20-10 12:22 PM - Post#1992403    
    In response to Road Runner

So I should be ok with the Original 10" clutch? How about changing the "Okey Bushing" in the front of the Torque tube? this Rear End has been sitting for a long time, I'm afraid I might have problems sometime down the road and would have to replace it anyway.



 
Road Runner 
Forum Newbie
Posts: 86
Road Runner
Loc: CA Mountain Desert
Reg: 02-07-07
10-20-10 01:40 PM - Post#1992420    
    In response to BOBDAWG

The original clutch was 9".
It's OK too, if it doesn't need replacing yet.
I have a 9" clutch with my 235 and 3.55 rear on the truck, cos I couldn't find a good 10" when I replaced the transmission a few years ago.
The unloaded truck weighs the same as the coupe and I also drove it fully loaded many times.

I kept the oakie bushing, that came with my PG torque tube, which also sat for a long time but had low miles.

You can always replace it now, but it is something that can also be replaced later, quiet easily, if you keep checking your rearend plug and it starts to overfill with transmission fluid.
A new bushing would just get tapped over the old one, which gets pushed back, unless somebody already did that one day.

Btw: Use only GL-4 rated gear oil in the transmission, as it doesn't eat the brass parts, like the GL-5 stuff does.




On the road every day ...

1948 Coupe

1952 Truck


 
2blu52 
"16th Year" Silver Supporting Member
Posts: 17883
2blu52
Age: 83
Loc: Montana
Reg: 03-12-02
10-20-10 04:09 PM - Post#1992479    
    In response to Road Runner

I would like to add that the gasket used at the front of the differential is much thinner than the diff. cover gasket at the rear. They are the same otherwise. The thin gasket is used to set depth of gearing. I could not find one locally and had to purchase it from the "Filling Station".

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

THOMAS JEFFERSON


 
Road Runner 
Forum Newbie
Posts: 86
Road Runner
Loc: CA Mountain Desert
Reg: 02-07-07
10-20-10 05:13 PM - Post#1992507    
    In response to 2blu52

Good tip.
The quality gaskets from suppliers come from the same source: 'Best gasket'.
The differential carrier and cover gaskets are packaged individually and labeled and should stay that way until just before installing them.
This way you keep them also clean and undamaged.
That's good practice anyway, with any gaskets and parts.


On the road every day ...

1948 Coupe

1952 Truck


 
BOBDAWG 
Member
Posts: 93
BOBDAWG
Loc: Wildomar,CA.usa
Reg: 03-01-03
10-21-10 08:52 AM - Post#1992799    
    In response to Road Runner

Great stuff! I'm hoping to get started on the switch this fall, Will let you know how it turns out. Thanks Guys



 
gary635g 
Contributor
Posts: 455
gary635g
Age: 78
Loc: Oldtown Idaho Yuma Az
Reg: 10-28-09
10-23-10 08:48 AM - Post#1993688    
    In response to BOBDAWG

Accomplished the same change out using a 54 PG 3:55 into a 41 Special Deluxe that I also put a 62 261 in it runs and performs very well. I also have diamond Back white wall radials that are ~ 1 inch taller than the 600-16, Speedometer correction ~ 20% at 50 on speedometer actual speed using Tom Tom ~ 60 MPH.



Edited by gary635g on 10-23-10 08:49 AM. Reason for edit: No reason given.

 
Road Runner 
Forum Newbie
Posts: 86
Road Runner
Loc: CA Mountain Desert
Reg: 02-07-07
10-23-10 10:02 AM - Post#1993713    
    In response to gary635g

Patrick's in Arizona has a speedo adapter for 3.55 rear ends.
I have 225/75/15 radials and the odometer is accurate with that adapter, compared to mile markers on the side of the road.
The speedo needle needs to be adjusted in the housing to it's slowest setting (max. tension on the spring)


On the road every day ...

1948 Coupe

1952 Truck


 
arnieg141 
Dedicated Enthusiast
Posts: 6355
arnieg141
Loc: nj
Reg: 10-06-08
10-24-10 07:09 AM - Post#1994068    
    In response to Road Runner

http://www.chevytalk.org/fusionbb/showtopic.php?ti...

GET ER DONE .. AS I GET OLDER I LIKE FAST CARS I CAN STILL DRIVE. AND VERY SLOW WOMEN I CAN CATCH while still able..arnie garrison


 
Road Runner 
Forum Newbie
Posts: 86
Road Runner
Loc: CA Mountain Desert
Reg: 02-07-07
10-24-10 07:56 AM - Post#1994088    
    In response to arnieg141

Another tool, I noticed I haven't mentioned, is the bearing puller kit for the wheel bearings.
The one with the right size screws onto the slide hammer threaded end.


That's a great link.
The 'Search' function on online forums like this one, is the most powerful tool you can ever own, as I hinted at in my first reply above.



On the road every day ...

1948 Coupe

1952 Truck


 
gary635g 
Contributor
Posts: 455
gary635g
Age: 78
Loc: Oldtown Idaho Yuma Az
Reg: 10-28-09
10-25-10 05:07 AM - Post#1994589    
    In response to Road Runner

Thanks for the info I have done some business with Patricks. The 20% correction no major problem but does also effect the odometer which requires correction on MPG. I will check with Patricks. 225/75R/16 Tires Gary



Edited by gary635g on 10-25-10 05:21 AM. Reason for edit: No reason given.

 
gary635g 
Contributor
Posts: 455
gary635g
Age: 78
Loc: Oldtown Idaho Yuma Az
Reg: 10-28-09
10-25-10 05:25 AM - Post#1994598    
    In response to Road Runner

Anyway to set spring tension with speedo in place. Thanks Gary



 
Road Runner 
Forum Newbie
Posts: 86
Road Runner
Loc: CA Mountain Desert
Reg: 02-07-07
10-25-10 07:33 AM - Post#1994653    
    In response to gary635g

You have to remove the glass, needle and bezel.
If you are careful, you can also keep the needle and bezel in place and use a long and thin screwdriver to gain access behind the bezel to set the spring tension. But only attempt that after you feel comfortable doing it the conventional way.


Patrick's adapter is accurate and close around 28 to 28-1/2" tire diameter.
Yours is wider and you can also get one made here...
http://www.speedometershop.com/ratio.html#TEST


On the road every day ...

1948 Coupe

1952 Truck


 
gary635g 
Contributor
Posts: 455
gary635g
Age: 78
Loc: Oldtown Idaho Yuma Az
Reg: 10-28-09
10-25-10 04:17 PM - Post#1994878    
    In response to Road Runner

Thanks for the info I have seen that spring in several 41 speedo heads I have cleaned and lubed and also have seen spring in a 55 I have the speedometer is off ~ 10 mph but odometer is right on with Tom Tom. My mother used to really squeeze my step dads leg when she thought he was speeding when really he was going 10 mph slower than indicated. Very nice looking Coupe pick up nice also but I am very partial to the 40 Chevs 41-48. I have a 2 Dr Special Deluxe with a 261 and 3:55 that runs very well, we are hauling it in our 24ft covered trailer to Yuma for the winter where I plan on a bit of body work and painting in Mexico. I also have a 4 DR Special Deluxe that I am restoring to bone stock Vacuum Shift also that like original 216 still running very well.Gary



 




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