The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1960 - 1966 Chevrolet & GMC Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 12-01-2020, 09:38 PM   #1
Asshat
Registered User
 
Asshat's Avatar
 
Join Date: Jul 2015
Location: South Orange County CA
Posts: 1,259
Rear diff cover gasket

Do you guys use any sealant on this gasket? It’s a paper gasket, not sure if it needs sealant or RTV.

Also, the bolts - do you guys use sealant on these? The threaded hole for these bolts go through into the differential.
__________________
1963 C20, small window, long bed
292, 4-speed
Asshat is offline   Reply With Quote
Old 12-01-2020, 09:48 PM   #2
AcampoDave
Registered User
 
AcampoDave's Avatar
 
Join Date: Feb 2013
Location: central California
Posts: 2,723
Re: Rear diff cover gasket

When I had my rear diff rebuilt at at shop they used sealant on both. Looks like the black stuff.
AcampoDave is offline   Reply With Quote
Old 12-01-2020, 09:49 PM   #3
Asshat
Registered User
 
Asshat's Avatar
 
Join Date: Jul 2015
Location: South Orange County CA
Posts: 1,259
Re: Rear diff cover gasket

Quote:
Originally Posted by AcampoDave View Post
When I had my rear diff rebuilt at at shop they used sealant on both. Looks like the black stuff.
Any idea what type?
__________________
1963 C20, small window, long bed
292, 4-speed
Asshat is offline   Reply With Quote
Old 12-01-2020, 10:23 PM   #4
AcampoDave
Registered User
 
AcampoDave's Avatar
 
Join Date: Feb 2013
Location: central California
Posts: 2,723
Re: Rear diff cover gasket

Sorry, no. Just that it's black
AcampoDave is offline   Reply With Quote
Old 12-01-2020, 10:26 PM   #5
rpmerf
Registered User
 
rpmerf's Avatar
 
Join Date: Feb 2011
Location: Parkville, MD
Posts: 1,024
Re: Rear diff cover gasket

Anytime I have a paper gasket, I smear RTV on both sides. Not really enough to squeeze out, just enough to fill in any imperfections.
__________________
1970 C20 Custom Camper - 350, TH350
1997 GMC Suburban
1994 Acura Integra GSR
1987 Dodge Daytona Shelby Z
rpmerf is offline   Reply With Quote
Old 12-01-2020, 11:49 PM   #6
SkinnyG
Registered User
 
SkinnyG's Avatar
 
Join Date: Feb 2012
Location: Beautiful BC, Canada, eh?!
Posts: 2,161
Re: Rear diff cover gasket

I use Permatex Ultra Black, no gasket.
__________________
1961 Apache: "Grabber Orange" Shortboxed, pancake, step-notch, air-ride, boosted-LS
1977 Silverado: Shortboxed & dropped, potato-potato
V8 Pontiac Firefly (Chevy Sprint): The ultimate engine swap: 5.7L in a 1.0L bag
Lotus Super 7 Replica: Scratch-built street-legal rollerskate
SkinnyG is offline   Reply With Quote
Old 12-02-2020, 12:54 AM   #7
GoingDown8
Registered User
 
Join Date: Aug 2020
Location: Vacaville Ca
Posts: 13
Quote:
Originally Posted by SkinnyG View Post
I use Permatex Ultra Black, no gasket.
Same here, no gasket just a bead of black Rtv.
Posted via Mobile Device
GoingDown8 is offline   Reply With Quote
Old 12-02-2020, 11:07 AM   #8
Asshat
Registered User
 
Asshat's Avatar
 
Join Date: Jul 2015
Location: South Orange County CA
Posts: 1,259
Re: Rear diff cover gasket

Quote:
Originally Posted by SkinnyG View Post
I use Permatex Ultra Black, no gasket.
Quote:
Originally Posted by GoingDown8 View Post
Same here, no gasket just a bead of black Rtv.
Posted via Mobile Device
After assembly, do you wait 24 hours before filling it with oil?
__________________
1963 C20, small window, long bed
292, 4-speed
Asshat is offline   Reply With Quote
Old 12-02-2020, 11:14 AM   #9
GoingDown8
Registered User
 
Join Date: Aug 2020
Location: Vacaville Ca
Posts: 13
I usually try to wait a couple hours but no not 24 hrs and never had any issue. Its all about how you lay your bead of rtv or some people like too smear the rtv.
Posted via Mobile Device
GoingDown8 is offline   Reply With Quote
Old 12-02-2020, 08:54 PM   #10
jneidig
Registered User
 
Join Date: Jun 2019
Location: Milton PA
Posts: 2
Re: Rear diff cover gasket

A little #2 Permatex will help seal things up if needed.
jneidig is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 01:00 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com