I want to be able to rev my LT1 higher than stock (maybe to 6500 or 7000 rpms). With some good Valve springs and hardened pushrods what do you guys think would be the highest to rev one an otherwise mostly stock 100,000 mile LT1. If just the valve-train adjustments wont cut it what else would be needed (im thinking in maybe the fuel delivery category). Would this be safe? I know the LT1 is more of a torquey bottom end motor, so would it even be worth it? What about with a bigger cam?