Poliwhirl will evolve into Poliwrath once a Water Stone is used on it. However, Poliwhirl has another evolution called Politoed which is obtained by trading a Poliwhirl while it is holding King's Rock.
Qwilfish does not evolve.
Arbok does not evolve.
Sandslash does not evolve.
Gyardos does not evolve.
Ampharos does not evolve in Pokémon HeartGold.
No, Magneton cannot evolve in Pokémon HeartGold.
Corsola does not evolve
No, Sableye does not evolve.
you cant evolve it on heartgold u can only get it in a sinnoh game
Shuckle Doesn't Evolve....
Kangaskan cannot evolve.
Eevee can not evolve into porygon.