Leak between motor and bell housing.

89on35s said
74 Duster, 360, A-500, 8.75 rear.
My car was working well after the transmission rebuild but I am not one to leave well enough alone. I added a higher stall convertor and 4.10 gears for better track times. I only maybe drove it 100 miles since the convertor change and it started leaking like crazy from the inspection cover. I pulled the motor to repair this leak and some other leaks on the motor as well.

I'm not sure what I was expecting but the front of the pump is dry except for a drop of fluid on 1 bottom pump bolt. The convertor is wet all around but the snout looks good. I'm thinking I must have screwed up the torque convertor seal when I slipped the new converter on. Could it be anything else?

Cley
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Just from the description and what I see in the pictures it's very likely the seal.
Check that pump gear drive area of the converter hub REALLY close to make sure there isn't a crack.
Also note that some of us pack the back of the seal with assembly lube or Vaseline to insure the lip spring inside the seal doesn't pop out when installing seal.
If it did you should see it hanging around the trans input shaft behind the seal.
It (probably) didn't loose the spring when you installed the seal because they usually leak right away when that happens. (but not always)