727 Pump/TQ Hub Seal Leak

Transman nailed it. The 727 hub is supposed to measure 1.875. U need a factory bushing then. To use the wider Chevy bushing the hub has to measure 1.871 or a little less. And yes the Chevy bushing stabilizes the converter a lot more. Post some pics of the hub. Most importantly measure it. The old saying is that if the seal is leaking the bearing or bushing is worn causing the seal to leak. Replacing the seal only is a band aid fjj in x as u found out. Kim