these cams are going into an ls motor. just wondering which is better for an n/a motor. i was looking over the spec sheets the reference section and it looks like the crower have the shorter duration higher lift and the crane have the longer duration lower lift. i know not all of the cams are that way but for the most part. this being said i have a head with mild porting and upograded springs and retainers to handle upto 10,000 RPM and .480 lift. this is going to be my daily driver too. thanks for any replies.