As we know, Bite and Crunch after Gen 4 became physical moves that make contact, but the moves were special in Gen 2 and 3 and I just want to know if they would trigger Poison Point, on a Nidoking, for example.
When a Pokémon with this Ability is hit by a move that makes contact, there is a 30% chance that the attacking Pokémon will become poisoned.
Contact (Bulbapedia)
Bite and Crunch are on this list, so they can trigger Poison Point.