Ran a buddies c5z the other night. Stock block with vortech blower. I think he says it makes around 630rwhp. I really was surprised I was able to hang with him since he has a lot more power and probably 200 lbs less weight as well.
run 1
427 VERT VS BLOWN C5Z RACE 1 - YouTube
run 2
427 vert vs blown c5 z06 run 2 - YouTube
run 1
427 VERT VS BLOWN C5Z RACE 1 - YouTube
run 2
427 vert vs blown c5 z06 run 2 - YouTube