I will be upgrading my cam. Do you have any suggestions? By the way for some background info. I have a 170 in the valiant but i am not using it, my dad has a 225 that has been sitting in the dirt for 30 years untouched. I will be hottanking it and boring it out and rebuilding it. I would like to upgrade my camshaft but i do not know much about camshafts. Do you know of a cam that i should use? or does a rebuild come with one.. I really want to make the 570 work :-D