v10 red line?

If you just hold it to the floor you will find out. We had a 5.4 which is the same modular engine with a couple less pistons and if you floor it the computer would cut it off at about 5700. It was hard to tell the exact number because it would bounce when it cut off and back on. It would do that with no ill effects.
I haven't done that with the V10 yet in park but in 1st gear it will stay at 5500 without cutting out so I know it's higher then that.