Thats not high at all! Most of these Chivys are 12.5-14:1 compression. Mad Dart added some excellent info that I left out about your timing. I am turbo'd and using the MSD BTM that pigs to the MSD 6AL and can pull 1-3* timing per pound of boost. The MSD Digital 6 or the 7 would be perfect for the N2O. Another good reference site is www.yellowbullet.com for N2O.
