i am not sure how many, i thought i did not have any 8 tracks, but i stumbled across the 8 track storage box, that i had when a teenager that stayed in my car, usually, i did not remember putting it in a place in the basement. one note of caution, many years ago, after the 8 tracks were old, i went to play one in my then stereo, a console, magnavox, well if u look at a 8 track tape it has a black rubber wheel in one side of the front. well i went to pull it out, and my player had tar all in it. what happened after then checking the other 8 track tapes is on some that rubber wheel must have had some kind of chemical breakdown and that rubber turned to a tar like substance, i checked the rest and found some were bad and some not, if u mash the rubber wheel if it is soft it will mash in, u can tell which ones may be bad,