64 with 7.25 rear end.

Should I use a replacement gasket, or just goop it up with silicone (don't think they had silicone originally, so is silicone better or worse?)

(just an oil change, and I want to check out the internals while I'm at it)

_________________
Ed
64 Valiant 225 / 904 / 42:1 manual steering / 9" drum brakes

get a gasket at your local parts place. ron

Ditto. Always use a gasket when you can. I spent a good couple hour wirewheeling the old goop off my transmission's drain pan and the diff cover, and it was a royal pain. New gaskets on both and they go on easily and seal well. No leaks, no worries.

_________________
'74 Duster w/ HEI ignition, beat to snot suspension, A904, 8.25" 3.55 SG rear, still being tuned up and gets 17 MPG

Know how they always build a better idiot? That's me

Another vote for "gasket".

_________________
一期一会
Too many people who were born on third base actually believe they've hit a triple.

Yep Gasket. And doint ever use any goop ie silcone or gasket sealer on a trans pan.If any of it gets smached toward the inside and a piece of silcone breaks loose and goes to the trans vavle body bad news. Thanks Ron Parker









Bagels On Juice Im On Boost












Bagels On Juice Im On Boost

How would a piece of silicone get thru the filter? (those with a pan filter, not the earlier remote filters)



Ok, I'll get a gasket, but I was thinking of siliconing it to the cover (letting it dry), then installing it so the gasket won't move on installation

(and I can trim off any goopy pieces before installation tooooo)

_________________
Ed
64 Valiant 225 / 904 / 42:1 manual steering / 9" drum brakes

Better, faster, and easier: Tie the gasket to the cover plate with lengths of ordinary sewing thread through a couple of the bolt holes. The thread won't interfere with the gasket seal, and can just be left in place.

_________________
一期一会
Too many people who were born on third base actually believe they've hit a triple.

Doint let a thing like stuff cant get thru the filter to block a opening in the vavle body. Correct parts work better than redneck parts. And I am a professional Red Neck. But I have my race team that includes professional people that have College degres. Thanks Ron Parker









Bagels On Juice Im On Boost

For a rear end I would not think twice about using just silicone. I just changed fluid in the 9-1/4" in my R/T and it was siliconed from the factory.

For trans pans Mopar makes a very nice re-useable gasket.

_________________
Official Cookie and Mater Tormentor.

I spray the trans pan with HighTack from Permatex and stick the gasket to it. Five seconds later it will stay on even upside down.
The rear I agree with Slantzilla - goup or gasket and goup.

_________________
67Cuda,FAST EZEFI,340cu,CR=10.25,RollerCam&Rocker (XR268HR,#20-810-9)(#1622-16)(EddyRPM#60779,#7576), (MSD6AL,#6425) A904, GearVendorsOD, 8 1/4,3.55:1, ClassicAir

Yes we like the high temp spray & gasket, not a big mess when done.Hope this helps Don

_________________
'72 Duster /6 with turbo build up
'03 Ram 2500 4x4 w/HEMI 5sp 4:10 posi
My Twister Page

So you don't need any goo when replacing a trans pan gasket?

That is correct. However the OEM pan gasket for a late model (2001)dodge PU, is a nice improvement, but also recommend the longer pan bolts to go with it.

_________________
Charrlie_S
65 Valiant 100 2dr post 170 turbo
66 Valiant Signet 170 nitrous
64 Valiant Signet
64 Valiant 4dr 170
64 Valiant 4dr 225

The wifes old Stratus, and the PT, don't have transmission pan gaskets. They are gooped from the factory, and that's what you have to buy and use if you do it yourself.

It's pretty good stuff, too.

_________________
'15 Chrysler 200S V6
'74 Duster 360, factory 4 speed car

Another vote for gasket on the rear differential cover. ( I just did my 8.25 with stock 3.55 ratio in my 1979 D-100 2wd).