Depends on how much of the cam lobe is missing. If only a little bit you might get away with it. If not, well, Racer Walsh, who used to race that engine a LOT says that you MUST pull engine down to clean all the trash out from the lobe, not doing so simply tears the motor up far worse. Oil and filter change won't touch it and he emphasizes that point.
Put a magnetic drain plug in there and see what you get.
You better have new cam followers coming too, using old ones over there are the fastest way I know of to ruin the new cam, it MUST have new followers and they are matched part for lobe after that. Simply mixing them up to swap them will kill lobes faster than spit. Ignore any numbers, the followers are the same.
The valves MUST have clearance when the lifter is fully collapsed or the valve gets held open by the lifter to then wipe oil off the lobe and cam dies in short order. How many of these motors got turned into junk after a valve job, valves sit higher in head when done and that clearance check not done. Flat lobes in one hour of running.
The later emission cars can easily cook the oil in the oil supply passages in the head to cam too, if no oil coming to cam then no oil at lobe, lobe dies. So the oil passages have to be cleaned too. I've seen like deposit solid as a rock in that oil passage before.