wutd u use. cuz the first 4 times thru the game, i had a lvl 87 machamp used just for beating the c**p outta snorlax. but now my goal is to beat him with all pkmn under lvl 55, so snorlax is challenging. my strategy so far is for my gengar to subdue it before brining in a tyrannitar to deal damage.
i had a...
snorlax
ampharos
sudowoodo
typhlosion
RED gyarados
and noctowl
but the ones i used were snorlax,ty,gyarados,and ampharos
and they were all Lv.61 (but noctowl was like 21?... i think)