Tranny leaking

[General_01]

My transmission was leaking alot of fluid. I dropped the pan, put an aluminum deep pan back on and pulled the dipstick and siliconed it up good. I let it sit a couple of days before I filled it back up. I took it for a 10 minute ride. I stomped on it a few times and spun the tires at a stoplight. I parked it in the garage and put a clean peice of cardboard under the tranny. After about 45 minutes I checked and there is a spot about the size of quarter on the cardboard directly under the bellhousing inspection plate. I have a modified 440 with a 3,000 stall converter. Do you think I need a new front seal? I am thinking yes but am hoping I may be missing something. Would a stall converter push fluid out the vent hole even if it is not overfilled? I wouldn't think so, but this is my first experience with a stall this high. Any help is appreciated. I just don't want to drop the tranny until I have all the bases covered.

My big problem before this was the dipstick. I was parked on the side of the highway once late last year. I took off by flooring it and laying some rubber. After a mile I noticed smoke out my back window. I pulled over to find tranny fluid dumping all over the exhaust. I did the same check as above with clean cardboard last week and I had a watermelon sized stain on the cardboard under the dipstick and lots of small ones under the pan bolts and a the same sized one under the bellhousing, so I took care of the big one.

[TylerCharger69]

New front main seal..or new front pump seal...I'd change them both while you have it out

[Todd Wilson]

I'd make sure its leaking there for sure and not running down the tranny and dropping there making you think its leaking at that spot.


I am not much of a snake oil person but Lucas makes a transmission additive that works real good at stopping minor leaks and the old torqueflights like the additive as well.  A qt of it is about 6-8$ and you should be able to get it at any parts store. Put some of that in and see if it fixes your problem before you have to jack things up and pull a tranny.



Todd

[gnrl01]

General 01 sounds like you and I were on the same path, I have not had a seal problem but I did have the dipstick tube problem, I purchased a nice lit from Mancini Racing that took care of the bind in my filler neck and my sloppy seal. It did the trick and all is good, i was getting tired of putting a bed pan under my charger after I parked him.   Hope to see you around soon!!

Don
http://midwesthotrods.us/

[General_01]

Thanks for the input guys. I am thinking of doing what you said Todd to just tide me over until after the TDC meet. I am busy with soccer and dance for my daughters and just don't have the time. Maybe it will take care of it for now until I have the time. I may check to see what a tranny shop would charge. Thanks again for all of the help guys.

Dean

[Nacho-RT74]

Once I was driving crazy about a similar oil leak on same area. Removed 3 times oil pan, to check gasket, valve body linkage seals etc... Do you wanna know what it was ?

THE REAR O RING to the reverse band shaft... oil was droping and tracing all the gasket up to front.