I have a question about cam choice for my '07 FLHRS. I will really appreciate any reactions to my question/dilema. I have a 2007 FLHRS that I purchased new in February 2007. Before taking delivery in May 2007, I had quite a bit of performance and non-performance (e.g. replaced stock handle bars with Carlini sweep bars; custom gauges, etc.) work done to the bike. On the performance side, I added a Screamin' Eagle Big Bore Stage II kit for EFI Models (this increased displacement from 96 CI to 103 CI, included SE-255 cams, big bore cylinders, big bore flat top pistons, etc.). I also added Rinehart True Dual performance exhaust and a ThunderMax Autotuner. The bike runs well; on the dyno I get 85 HP and 102 TQ. I am planning on putting new heads on my motor; specifically HR Part No. 16500013A - Screamin Eagle Pro CNC Factory Heads with Valve Upgrade. My goal is to get better low to mid range torque than I am getting. My dyno curve suggests I am not getting enough air and I expect the new heads will address that. Depending on who I talk to, I am being told that when I switch to the Screamin' Eagle heads I should also change cams - from my SE 255 cams to SE 585 cams, Red Shift 575 cams, S&S 570 cams, or maybe T-Man 555 cams. I understand that, as a general proposition an early intake closing (less than 30 degrees after bottom dead center) will result in good low end torque, and a medium intake closing (30 - 50 degrees ABDC) will result in good midrange torque. The thing is, the SE 255s have an intake closing of 25 degrees ABDC, which is an earlier intake closing than any of the other cams that are being suggested. I know there are things than intake closing to consider, but until I have a better understanding of those other factors, I find myself questioning whether I should stick with the SE 255s or switch to one of the other cams that are being suggested. As mentioned above, my goal is strong low end to mid range torque. Horsepower increase, if achieved as a by product is fine of course, but I am after the improved low to mid range torque. Any and all reactions/comments/suggestions will be GREATLY appreciated!