hello...nice comment and math....how many vehicles have you had and played with different rear gear ratios to actually see what you gain by changing? ......Arthur Anderson does great math too, look what they have now!!!.....LOL....it really makes me wonder why one would build a performance engine and NOT change rear gear to maximize accleration- i guess it all depends on goal.... have engine use power band performance cam offers.....its the combination of where engine is built to operate and what gear you use.....after you change and use different gears, its understandable why a gear change is needed for performance engine...good luck

Lee