look down the dist hole at the end of the cam and lobe
want to see a roller lifter on the cam lobe
want to look at the vally were there will be a thin metal hold down that hold the dog bones on the lifters
an 88 block may have the taller lifter bores and hold down bosses and have a flat tappet cam,so look at them if ya get a chance
if ya get a roller cam ya can reuse the roller lifters, take them apart and clean them
whatch roller cams and the springs...the cams fine but most use double springs...get a single with a damper that drop on with no machine work
I have an extra set of doubles springs now