Is there a rectangular seal under the 727 trans?

themechanic

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I replaced the rear trans mount in Uncle Bill's Cuda this week. It looks like there is a rectangular seal under a metal plate held on with two Phillips screws. I wiped it off and it was wet the next day. Mind you, I had already drained the trans to replace the speedometer cable housing seals and install a new dipstick.

Is there a seal under the trans mount? I need to know ASAP before I fill the trans.

Thanks
 

pnora

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I replaced the rear trans mount in Uncle Bill's Cuda this week. It looks like there is a rectangular seal under a metal plate held on with two Phillips screws. I wiped it off and it was wet the next day. Mind you, I had already drained the trans to replace the speedometer cable housing seals and install a new dipstick.

Is there a seal under the trans mount? I need to know ASAP before I fill the trans.

Thanks
Yes a rectangular cork gasket.
 

themechanic

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Yes a rectangular cork gasket.
Is it the snap ring access cover gasket like Fran mentions in post #81 here? If so, where can I find one?

 

themechanic

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I found a tail housing seal kit that includes the gasket I need at a couple online stores. I may try and make one, as Fran suggested and save $65.
 

Lefty71

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I may try and make one, as Fran suggested and save $65.
Some kits include that in a paper type gasket material..... I would certainly try and make one up before I spent money too. Good Luck.
 

themechanic

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Does the transmission fluid need to be drained to replace the gasket and/or output shaft seal? I'm thinking lifting the rear high enough should prevent any leaks without draining the trans fluid.
 

Lefty71

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Good chance you'll be ok... just be prepared lol.
 

RemCharger

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Not much will come out. The speedo gear is right by it, and lower.
 

themechanic

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I just ordered the output shaft seal and a Fel Pro gasket material kit that includes cork and paper materials of different thicknesses. So, I will wait and do the job and then add the trans fluid.

Thanks for all the help, fellas.
 
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