Thread: 700r4 leak in Ford Coupe Street Rod

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I am currently in the final stages of my 1931 Coupe build. I fired it up today for the first time to check things out. Two problems arose. One is gonna be a real pain. My tranny (700r4) appears to be leaking from the converter seal. It throws a small misry line on the ground with fluid and then leaves a medium puddle (size of a fist) in the ground when it sits. I have no problem pulling the tranny and putting a new seal in it, the problem is the car is completely redone and the paint and body work is extensive. I fear I may hurt something. I was hoping someone may have some ideas how this happened. The tranny is brand new but has been sitting since last October. Is this a problem that is caused by the seal drying out? Overfilling? Is there a chance it will go away if I run the car for a while? Any suggestions would be great. Thanks for everyones help and cruise on.

Fords do that when other make parts are used on them.

Originally Posted by paul274854

Fords do that when other make parts are used on them.

Hmmm.... Mine don't! Mine like it.

Pat

Hello, You shouldn't have any problem once a new seal is installed,be sure to lube it first before you gently install the torque converter. Also make sure the pump surface,where the seal mates to is clean and nick free.
Brian

most 700r4 converterseal leaks are caused by the pump bushing walking forward blocking of the hole that feeds the cooler gm came out with a teflon coated bushing as a fix bring it back to how ever built it they should fix it for free.

Even if it did fix itself while drivin, it would make a terrible mess out of your undercarriage.