Oil pump goin bad?
I replaced the oil pressure sending unit with my intake swap so I know it's not that. I thought it may just be my gauge cluster cuz my dad's Avalnche's tach did the same thing and it was the gauge cluster.
Could it be my oil pump? Is there a way I could test this?
More specifically can I remove both the crank and cam gears when switching the old pump out without fear of the cam or crank rotating while the gears are off?

