Originally posted by rockster450
i have an 87 chevy pickup.....and i have a 350 small block....sounds like lifter but im not sure only makes the sound when under preasure doesnt do it when i rev up in nuetrul or park. only drive and reverse if it is lifter how do i find out which one it is please help
you might have a lobe wore off of the cam. see if all of the valves are moving all the way up and down.