correct. A car with 2.76's, stock converter and makes power starting at 3500 rpms will have a stronger big end finish. I find easycalculations.com to predict the closest when I compare my 1/4 mile time slips to what they project. But like you say, not all cars will run the projection. Some slower, some faster. But an average run by the average car, easycalculations.com just about nails it spot on.