I ran a 1/4 mile recently, came in at 16.353 @88mph,running a full tank of 87 octane. Not a rocket but really good for a car that's over 4000 lbs and doesn't have posi. I'd like to get a posi rearend as well as some headers, with just those additions, I'm sure I could get it under 15.75 without any problem.
