Donald Mitchell
1990 C1500 5.7L
There was also a longer one for a bean truck that we used a lot.May be the car filter instead of the truck one. Back in the day, the car one was PF25, truck one was PF35, and it's about 2" longer. I use the AC PF1218 filter which is specified for the Vortec engines. I also put at least half a quart of oil in the filter so the pump has something to start with.
AC Delco PF932