Check out Brenspeed, they make a cam for NA and for SC. They also have some info on them, their Cams are supposed to be pretty great. Also it's recommended to get gears with a cam, because you seem to lose a little on the bottom end.
Chevy runs deep, don't step in Chevy.
chevy runs deep, Don't step in chevy!
289 - Holley 4150 570cfm; Performer intake; mild cam; MSD HEI; 302 heads; Roller Tips; Hedman Tri-Y headers; H-pipe w/Flowmaster 40's; 9 in posi 3.50; 205/50-17F; 225/50-17R.