A few months ago I ran my 2000 z28 with 424 hp 3.73 gears 3600 vig at the track on 245/50-16 riken raptor tires.

I guess the track was good and my suspention is tight so everything worked out.

I did launch in 2nd gear everytime started off with a 1.70 60' rolling into the throttle, then a 1.64 hitting it harder, then this pass had a 1.590.

It was not a timer flaw, I also run bottom 1.5xx's on drag radials, and it felt near as fast on the streets.

http://www.youtube.com/watch?v=RLQ83nCjABc