Originally Posted By Stanton
Stock pumps have the elongated hole put given the passage from the block is round its questionable as to the benefit. Smoothing the rough casting in all those ports is a definite bonus.

I imagine the slotted rotor is someone's idea for lubrication. How many millions of pumps are out there without the slot ?!?!? Pointless.



If it someones idea and pointless,then Chrysler is the culprit,that is a N.O.S. pump in the original box unopened when I got it 30 yrs ago !!