Chevrolet Repair: SS v8 6.0 L oil pump, 2007 lumina ss, low oil pressure

Question
hi!

My car(SS Lumina 6.0l V8 2007) dropped oil pressure and stopped supplying oil to the hydrolics. I changed oil pump with new one but still it doesn't pump oil. So i want to know  what is the  cause of the problem?

Answer
HI MICHAEL.ARE YOU SURE OF THE LITER SIZE OF THIS ??? 6.0 LIT 2007 LUMINA SS ??? NO SUCH CAR...BUT IF THIS IS SOMETHING YOU HAVE MADE UP [CAR THAT IS,NOT FACTORY] THEN THE ONLY THING THAT CAN CAUSE NO OR LOW OIL PRESSURE IS BAD MAIN AND ROD BEARINGS AND IF THERE IS A LOT OF SLUDGE BUILT UP IN THE ENG THIS CAN CAUSE LOW OIL PRESSURE..