Going to try some index racing this weekend. I normally run 10.30's so I'm too slow for the 10.0 class. I need to slow it down to run the 11.0 class. I'm going to remove the cold air box that is normally good for at least a tenth and then shift at 6000 instead of 6600. I have the motor pretty fat right now so if its hot and humid that might help too. Any other ideas on how I can slow this thing down? I should probably post this on a Chevy site to find out how they go slow.