I have an old Halibrand rear in a vintage sprint car. The gears I have are both the same diameter. Anything I've ever worked with before always had a small gear and a larger one, and knowing the ring and pinion with a gear chart, it was easy to determine the ratio. I've determined this ring and pinion to be a 4:11. One of the gears has 28 teeth and the other 27 teeth. Looking at a chart, I'm assuming with the 28 on top is gives me a 4:26 and reversing the two gives me a 3:96. By both being the same diameter and only going by the number of teeth, it's got me wondering. Am I correct???