Well I took the plunge and purchased Trick Flow's 420hp top end kit and the 260hp GM Goodwrench crate engine. According to GM the motor should have approx. 9.8:1 compression with the 62cc combustion chambers. I'm wondering what I should be able to click off in a 1/4 mile with this kind of power. I think I'll be using a 3000RPM stall converter with 3.73 gears out back.