The hole goes to the channel on the pump cover case side and is plugged on the end. What would be tje reason for adding these holes is what my transmission giy cant figure out. And what would be the reason for wanting increased throughput from 14 a to 14 b and why would the housing be tapped...
I have a 4l80e that I just had rebuilt upon taking it apart these spots were drilled by a pervious owner, the guy rebuilding says he can't seem to figure out why they were done. 1 is in the housing of the trans the other in half the pump. Any input would be greatly appreciated