Snorlax

Only 80%? What a trash. Better transfer it. Seriously.

If you don't have other snorlax and it is rare in your area, power up it. After all it is strong enough compared to other pokemons in gen I.

Power up, it s awesome

According to Gamepress's take on Snorlax (https://pokemongo.gamepress.gg/pokemon/143) Zen Headbutt / Hyper Beam is pretty versatile as they gave it an A rating on both attack and defense.

In terms of IVs, 80 IVs v.s. Perfect IVs is negligible. It just (in my opinion) feels 'cool' / 'sweet' / 'fresh' {or whatever adjective you wish to use} to know you have a high IV snorlax. The only thing IVs will make a difference for is for gym placement, which will only matter once a larger base of the players reach max cp (lv 38) and have maxed out snorlax's.

If you don't have any others, go for it. It's a solid moveset. My highest cp snorlax has Lick / Body Slam which unfortunately is not one of the more efficient snorlax's on defense. Power tha bish uppp (one player's opinion). Take this as a grain of salt