The 1947 - Present Chevrolet & GMC Truck Message Board Network

The 1947 - Present Chevrolet & GMC Truck Message Board Network (https://67-72chevytrucks.com/vboard/index.php)

- The 1960 - 1966 Chevrolet & GMC Pickups Message Board (https://67-72chevytrucks.com/vboard/forumdisplay.php?f=6)

- - Rear diff cover gasket (https://67-72chevytrucks.com/vboard/showthread.php?t=815182)

Asshat

12-01-2020 09:38 PM

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.

AcampoDave

12-01-2020 09:48 PM

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.

Asshat

12-01-2020 09:49 PM

Re: Rear diff cover gasket

Quote:

Originally Posted by AcampoDave (Post 8843474)

When I had my rear diff rebuilt at at shop they used sealant on both. Looks like the black stuff.

Any idea what type?

AcampoDave

12-01-2020 10:23 PM

Re: Rear diff cover gasket

Sorry, no. Just that it's black

rpmerf

12-01-2020 10:26 PM

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.

SkinnyG

12-01-2020 11:49 PM

Re: Rear diff cover gasket

I use Permatex Ultra Black, no gasket.

GoingDown8

12-02-2020 12:54 AM

Quote:

Originally Posted by SkinnyG (Post 8843540)

I use Permatex Ultra Black, no gasket.

Same here, no gasket just a bead of black Rtv.
Posted via Mobile Device

Asshat

12-02-2020 11:07 AM

Re: Rear diff cover gasket

Quote:

Originally Posted by SkinnyG (Post 8843540)

I use Permatex Ultra Black, no gasket.

Quote:

Originally Posted by GoingDown8 (Post 8843559)

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?

GoingDown8

12-02-2020 11:14 AM

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

jneidig

12-02-2020 08:54 PM

Re: Rear diff cover gasket

A little #2 Permatex will help seal things up if needed.

All times are GMT -4. The time now is 03:52 AM.