There is no quick answer to your question.
On this site there is a guy named Grumpyvette.
http://www.chevytalk.org/fusionbb/showforum.php?fid/72/He has posted a wealth of information on your question. Whatever camshaft you pick, it should be matched to a number of other engine variables which also should be matched to eacn other and to your vehicle's torque converter, transmission gear ratios and rear end gear ratio.
Good luck.
