my first thought would be oil slosh on braking. a lot of the modded pans Ive seen over the years concentrate on keeping the oil near the pickup on launch and during a run, but don't really consider where the oil will go under hard braking. is it a specific brand of pan or one that's been modded up?
One of the things I've seen/read about being done to decrease forward slosh was a hinged baffle that would allow it to run back to the pan, but act as a barrier in the front half of the pan to keep the bulk of the oil around the pick up. windage trays can also sometimes help depending on how its designed.
One of the things I've seen/read about being done to decrease forward slosh was a hinged baffle that would allow it to run back to the pan, but act as a barrier in the front half of the pan to keep the bulk of the oil around the pick up. windage trays can also sometimes help depending on how its designed.