Lol @5500 stock ls rods can rev to 8k safely anything higher is a ????? on how long until it throws a rod.When you get your car tuned they can set your rev limiter where you stop making power.But to be safe I wouldnt rev pass 7800 just to be on the safe side.But I have seen alot of people build ls/v that have stock rods and rev to 8200 but I wouldnt try it.