Come on Marlin. Listen to Pete! Put some pipes on and go steeper with your gearing and you will be living in the mid 13's! The pipes alone, may not be a full half second, but they are definately damming up the works. Greatest limiting factor! What carb was stock on those cars? What is the car running for revs going through the traps? I just saw a post on v8Buick where another Olds w-31 ran 14.0's. I believe that he is running 4.33 gearing. He is not done with that car by a long way. And I find it hard to believe that a Nova can't beat a slow boat Olds!!!!