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Transmission Gasket

also if there is even a drop of atf on the sealing surface it will be the first place to start leaking . atf is a crazy weeping oil .
 
I've always felt the biggest mistake people (including myself) make with transmission pans is over torquing the bolts when using the cork type gaskets. That's one of the things I like about the Lube Locker gasket, it's more forgiving in that regard.
 
I've always felt the biggest mistake people (including myself) make with transmission pans is over torquing the bolts when using the cork type gaskets. That's one of the things I like about the Lube Locker gasket, it's more forgiving in that regard.

I agree. I think everyone is guilty of “one more turn aint gonna hurt”.... but it does.
 
I've always felt the biggest mistake people (including myself) make with transmission pans is over torquing the bolts when using the cork type gaskets. That's one of the things I like about the Lube Locker gasket, it's more forgiving in that regard.

especially with the stamped tin can pans.
 
I used WIX brand gaskets and filters back in the day..their gaskets have some bolt holes that are slightly undersized,so you can thread the bolts into the gasket and it'll hold it in position while you install the pan..
I avoid using any sealer or gasket maker on transmissions,too easy for some to get in places where it'll cause trouble..Usually the WIX gaskets seal good without any goop needed..

I got a deep B&M aluminum pan for my TH400,but have yet to install it--found out it also requires a filter spacer,you cannot just dump in more fluid,so it's been riding around in the tool box in the bed for a decade or more..

I'm not really keen on the aluminum pans,the reason I got this one was because the person who gave it to me couldn't get it not to leak..(friend said the gasket was inside the pan in one spot when he removed it!-,maybe that was why ?..:surepal:)..Owner blamed the pan for being "warped" but it looks fine to me..:dunno:

Anyway,I doubt I'll ever use it--cast aluminum pans crack easily and though my TH400 should have its fluid changed,I think I will stick with the stock steel pan..maybe add a drain plug and a magnet while it's off..
 
I painted the stock pan... I may just stick with that instead of the drain plug one... haven’t decided yet.
Ive used in the past a wee bit of Gasgacinch on the part of the gasket that mates to the pan and the tranny side of the gasket dry.

Any mistake only costs ya $30 in fluid so.. hahahah
 
My automatic transmission rebuilding teacher taught us that chrome plated steel pans look cool, but that chrome actually retains heat. He said to skip it when it came to oil pans, trans pans, and diff covers
 
Chrome oil pans turn brown with rust here in a winter,and a few years later they are so pitted oil oozes out of them like pus from a teenager's zits..
Those Mr.Gasket aluminum oil pans suck too.I have seen one have the baffles inside break off and get tossed around in the crankcase--my older brother had one do that on his '69 Camaro,he had to pull the engine after the pieces busted off one of the piston skirts and replace the piston..
 
chrome DON'T GET YOU HOME

and even if stock pan pop a hole in the dimple area tack weld in a nut and get a replacement drain plug and gasket for it . next time you will be SO HAPPY you did that .
 
Nothing worse than getting a Dexron shampoo when you pry the pan away from the transmission...:angry1:

I've tried the trick of removing all but one bolt and use a giant cookie sheet to catch all the fluid--but every time the fluid manages to pour out in the one spot where it'll miss the pan,or it dumps right on my head and body instead..

I had a '71 GMC K1500 , TH350 that came factory with a drain plug in the pan--I kept it and put a later one on the transmission when I sold it...wish now I'd have kept it,I let it stay on the next truck when I sold it..
 
Lol, I propped up a piece of cardboard that went from behind the tranny and into my pan. It worked more or less, until I pulled the last bolt... then atf down my arm, leg. It worked bit still not a mess free drainage.
Your fingers get so damn slippery
 
Only thing worse than ATF on you is diesel fuel..one drop gets on you or your clothes,your boned,you'll stink like a diesel roach for a month--and anything you go near will too..

-I've been having to put 5 gallons of diesel in my home heating oil tank till I got oil delivered yesterday,and despite being VERY cautious ,I managed to get some on both my hands and my shirt...now my couch,bed,and truck all stink of diesel ,and at most I got only a few drops on me!..

ATF is pretty rank smelling ,especially used stuff--but the worst of all is probably gear oil,that sulpher stench never seems to die--2 stroke gas & oil mix is a close second..gas alone aint so bad,it evaporates fast and doesn't stink that long..old rank stale gas is about equally bad as vomit..
 
Only thing worse than ATF on you is diesel fuel..one drop gets on you or your clothes,your boned,you'll stink like a diesel roach for a month--and anything you go near will too..

-I've been having to put 5 gallons of diesel in my home heating oil tank till I got oil delivered yesterday,and despite being VERY cautious ,I managed to get some on both my hands and my shirt...now my couch,bed,and truck all stink of diesel ,and at most I got only a few drops on me!..

ATF is pretty rank smelling ,especially used stuff--but the worst of all is probably gear oil,that sulpher stench never seems to die--2 stroke gas & oil mix is a close second..gas alone aint so bad,it evaporates fast and doesn't stink that long..old rank stale gas is about equally bad as vomit..
I was going to say, but you got to it there, nothing worse than gear oil
 

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