N/A 235 ci, 10:1, 2770#, was guaranteed the car would run 13:80's when I got it. All I've done is tuned and changed from 93 pump w/alcohol to 91 pump wo/alcohol. Weather was good, but not mineshaft. Backed it up 15 minutes later with a 12:93@102. Time to quit chasing numbers and go back to being a serious bracket racer.