just to be safe i would change the oil and pull the intake manifold and get a lifter removal tool, i think auto zone loans them fro free. and pull all the lifters and clean them and make sure they go in the same hole {im sure you know that but i thought i would say it anyway} this way no chances will be taken by just changing the oil and just starting the car without being sure or it could be something stupid like a loose plug wire
hope this helped good luck
TYLER