Camerupt isn't very good though,it is outclassed by so many other things even with a Solid Rock ability but Emboar has better stats and STAB Earthquake and Flare Blitz off 123 Base Attack with Reckless is pretty delicious. It has virtually the same weaknesses as fire/fighting except a 4x Water and the lack of Flying/Psychic so no Reuniclus weakness but it was probably never going to survive a medium-strong water move anyway. Gyarados, Garchomp, Salamence, Dragonite, Flygon, Heatran and Magnezone cope with a 4x weakeness in OU.
That combination is only resisted by Aerodactyl, Archeops, Salamence, Dragonite, Charizard, Ho-oh, Moltres, Mantine/Mantyke, Wingull/Pelipper, Ducklett/Swanna and Gyarados.
If this thing made OU it wouldn't face Charizard (NU,) Ho-oh (Uber,) Pelipper (NU,) Mantine (NU) and Moltres (UU.) Archeops is (subjectively) worthless because of its ability.
Plus Head Smash (gets a Reckless boost too) hits them all Super-Effectively except Aerodactyl and Archeops who are hit neutrally.
You could also go with Wild Bolt/Wild Charge (gets a Reckless boost too) which also hits them all Super-Effectively except Dragonite and Salamence.
A set of:
Flare Blitz
Earthquake
Head Smash/Wild Bolt
gets neutral coverage on everything. To me, at least, that shapes up to be very good.