Upon reading Dave's link, it appears to me that the oil distributor dictates the balance of oil pressure between the rear main bearings/connecting rod bearings, and the remaining main bearings/cam bearings, to ensure that neither are deprived of adequate oil pressure.
I would suspect that if one were to install an oil pump with increased volume/pressure, that the oil distributor spring would also need to modified to open at a higher oil pressure (a stronger spring I am guessing).
What say you?
Carl
