Transmission leaking when car is jacked up from front

[65-Newport]

Hey guys,

I have a '65 Newport 383 with a A727 TF. I just had the TF rebuilt about 2 months ago at a local shop. When I jack the car up from the front the tranny leaks, I think it is coming from the shaft. Any thoughts or ideas of what it could be?

Thanks in advance.

 

[CBODY67]

There is a somewhat flexible seal that the driveshaft slip yoke slides in and out of. Insude the tail housing is also a bronze bushing the slip yoke turns in. When the bushing wears, the outer seal wears, too, and leaks as a result.

Usually, there's not much need for lube in the tailshaft housing. Just the speedo gears and that bushing back there. BUT with the car body angled as you do, and all of the oil has drained out of the torque converter, then a bit too much oil can be back there.

When and if you remove the driveshaft, check for a "wear area" on the slip yoke, from its contact with the rear seal(s). Check to ensure the atf level is correct when the motor is hot and well into operating temp (after driving for about 10 miles).

Address your concerns to the trans rebuilder and see what they say.

Just some thoughts,
CBODY67

 

[65-Newport]

Thanks CBODY67!