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Help with rear diff. ID
#1408231 Sat May 01 2021 11:47 PM
Joined: Jul 2020
Posts: 4
J
JustinB Offline OP
Moderated
I have a pretty good leak in the old RTV in the rear diff cover. I am thinking about painting the rear end while I have the cover off, and possibly getting a new diff cover. Can anyone help me identify the rear end. I think it is stock, but I am not sure if they had a drain plug in the bottom like this one or maybe it was added by someone along the line. Kind of hard to see the drain plug I am talking about in the pics. Just not sure what to search to find a cover that will fit. Thank you.

Forgot to mention that it's in a 1958 Chevy 3200.

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Last edited by JustinB; Sun May 02 2021 04:06 AM.
Re: Help with rear diff. ID
JustinB #1408237 Sun May 02 2021 12:31 AM
Joined: Jan 2002
Posts: 2,199
C
'Bolter
Why are you getting another cover? You mean a new gasket for the cover? Is the plug at the bottom and requires a hex wrench? I put a hex drain plug at the bottom of mine and love it.


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Re: Help with rear diff. ID
JustinB #1408247 Sun May 02 2021 01:36 AM
Joined: Apr 2005
Posts: 10,039
Grease Monkey, Moderator General Truck Talk & Greasy Spoon
It would help if you told us what your working on.


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Re: Help with rear diff. ID
cmayna #1408248 Sun May 02 2021 01:40 AM
Joined: Jul 2020
Posts: 4
J
JustinB Offline OP
Moderated
Was just thinking about it. Not sold on getting a cover for sure though. Yea it’s a hex drain on the underside. I have the shop manual and it looks stock but I don’t see that drain plug in any of the pics from the manual so I wasn’t sure. Is there a specific name for this diff to find out more info. Probably a stupid question, but I have only really worked newer vehicles before this truck.

Re: Help with rear diff. ID
JustinB #1408255 Sun May 02 2021 02:29 AM
Joined: Jan 2001
Posts: 5,132
P
'Bolter
I think you will find that cover fits 1940-62, as will the gasket.


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Re: Help with rear diff. ID
JustinB #1408257 Sun May 02 2021 02:32 AM
Joined: Sep 2010
Posts: 981
K
'Bolter
I don’t see a drain plug,is it under were the bump is on the cover


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Re: Help with rear diff. ID
JustinB #1408260 Sun May 02 2021 02:37 AM
Joined: Mar 2019
Posts: 115
T
'Bolter
I believe that if you remove the bottom bolt of the cover the gear lube will drain out. Just remember to put some sealant on the threads of that bolt when you reinstall the cover.


Rusty
Re: Help with rear diff. ID
JustinB #1408271 Sun May 02 2021 04:02 AM
Joined: Jul 2020
Posts: 4
J
JustinB Offline OP
Moderated
Hey guys, thank you for the responses. I think what I am trying to ask is if this is the stock '58 rear end? Also, is there a way to identify it when I am searching online for parts? For example if I am searching for a cover for a 8.2 GM 10 bolt I will get exactly that, or a Ford 9. But I am not sure what to type in when looking for this rear end.

Re: Help with rear diff. ID
JustinB #1408280 Sun May 02 2021 11:58 AM
Joined: Feb 2019
Posts: 2,087
P
AD Addict
I just did my ‘52 3100 with the stock torque tube,. It looks just like yours, and I just loosened the bolts and pried the cover back on the bottom to let it drain. I reinstalled with a new gasket and used anti-seeze on the cover bolts. No leaks.

Last edited by Phak1; Sun May 02 2021 11:59 AM.

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Re: Help with rear diff. ID
JustinB #1408294 Sun May 02 2021 02:38 PM
Joined: Jan 2002
Posts: 2,199
C
'Bolter
If you do infact have a drain plug at the bottom of the diff, be sure to think about the plug when you use a floorjack on the diff. Later today I will show a pic of what I use along with the floor jack when it comes jacking up the backside.


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