I hope this thread is still active. Zippy I could really use your help. Year of truck: 2003 Model: SS awd Trans: 4L65E Converter: stock Gear: 4:10 Tires: stock List of current mods: Banks cold air intake, e cut outs. Possible future mods: I am setting up for a L92 head and intake swap. Custom tune and banks headers. Possible TCI 6X trans. Goals of truck: To get as much street able hp as possible with a decent 1/4 mile while maintaining reliability. I am looking for usable hp with a nice lope sound. Uses of truck: DD and weekend 1/4 mile drag. I was thinking about running the gmpp LS6 cam 207/217 .525/.525 LSA 116 or maybe gmpp ASA 226/236 .525/.525 LSA 110. I would like to stick with gm if possible. What do you think? Or can I get away with the LS7 cam? 211/230 .593/.590 LSA 120? Any help would be awsome. Thanks for your help.