Inspection of a 904 torqueflite

I finally got around to getting the line pressure hole drilled. The measuring was good and lined up perfectly with the valve body mocked up.

I drilled a 1/8 hole in the back of the case to lube the sprag clutch better.

And then drilled a decent sized hole for a 1/8th pipe thread plug or a vent to be put there and possibly block the vent in the pump. I know this was unnecessary but while I was at it and had aluminum shavings ll over the place. I figured to just get it all done at once whether I was gonna use it or not.

I do wonder though. Why do people block the pump vent and open up the top of the case or put it toward the back near the governor.