Dave is running a Dart Buick headed dry sump small block BUILT to spin
that high. You can certainly spin a stock LS to 7,500 but you WILL break
stuff.
Our rev limiter is set @ 6,700, my shift light is at 6,200. With a RR4 Jerico
(clutchless shifting) I generally see 6,500 on the recall after a run. We made
peak power right around 6,500 with an intercooled S488 on VP C16 gas. You
don't need a giant cam when you go turbo, I think we run something in the
240's I & E with .650 lift.