Leaking C6 Transmission

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Jul 23, 2011 | 05:36 PM

KraZeDav

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From: Santee, CA

Leaking C6 Transmission

I have a 1975 350 RV with a 460 and c6 tranny.
I had a previous problem with the c6 pan leaking. I replaced the gasket then the pan. Now I have tranny fluid leaking from inside the bell housing so I guess that means I'm going to have to pull it out.
I have pulled and replaced a couple manual trannies and clutches but never an automatic.
The tranny seems to work just fine so do I need to have it rebuilt.
Is front seal and or torque convert repairable with out having to rebuild the tranny?
I just did a quick search on craigslist for a C6. If I just get another one for about $300 or so, is there a differences in the yr or are they all the same?
any finger pointing to the right direction for more info would be helpful.

tranny-pan-gasket-leaking

Jul 23, 2011 | 06:07 PM

MiddleNameMUD

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From: Residing in the shwa. On.

I have never pulled a ford auto but I would suspect it to be the same principle, you should be able to change the seal relatively easy. I just learned there is a drain plug on the torque converter maybe bump the engine till you can see it through the inspection plate and see if it is leaking? It's probably not but worth a look before you pull the trans... Just a thought?

Jul 24, 2011 | 10:23 AM

KraZeDav

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From: Santee, CA

Thank you * Mud * for your input.

Jul 24, 2011 | 10:38 AM

KraZeDav

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From: Santee, CA

I was told that maybe adding a stop leak additive might swell up the seals and stop the leak. Does that stuff work.
I'm a service & repair plumber. People are always wanting to pour Drano down the drain to clear stoppages. And in my opinion never a good idea.
I figure pouring stop leak into a tranny is kind of the same , Not a good idea. Any opinions on that?

Jul 24, 2011 | 11:02 AM

Bullitt390

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Some have had good luck switching to the Valvoline Maxlife high mileage tranny oil, but it isn't Type F which is what you want.

Otherwise the you would want to change the front input seal and oil pump gasket.

And what is wrong with Drano? Stuff kicks *** for clogs.

Josh

Jul 24, 2011 | 02:20 PM

KraZeDav

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From: Santee, CA

Have you seen that Carl's Jr TV ad? Guy at the Grocery store and can't decide what to buy because of so many options on the shelf. Well I just went to Auto Zone and they had about 8 different brands of tranny stop leak. Some even guaranteed to work or your money back. Have to drive at least 100 to 200 miles depending on the brand I select.
Maybe I'll try that.
I guess I'll do some research and see what others say about it.

Jul 24, 2011 | 02:45 PM

KraZeDav

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From: Santee, CA

Okay. It only took me 20 minutes to decide again that a stop leak additive it not a good Idea.
The advertisement on the products at the store almost had me.
Most every thing I found was negative feed back.
So I guess I'll jack her up and jerk it out.

This link being the most compelling

The truth about transmission fluid additives. - What Should I Know About General Vehicle Maintenance? - Epinions.com