I have the NR racing 252 lift marine cam. Its an all torque cam. Love it. It is a "soft regrind" so it will wear out with heavier springs. I don't think they offer it any more. I can't find it on their website. My next cam will be something that will tolerate 26 lb springs. Possibly a Black Mamba Jr., Black Mamba, BP2, or Mod2.