Ok guys, I'm stumped. 71 dart with an LA 360 pushing a '73 727. Rear is an 8.25 geared at 2.45 and 225/60/r14's.
According to the manufacturer's spec on the tires, the math works out to a 26 tooth speedo gear. The problem is, if I calculate it manually, I get 24-25 tooth, which is insanely...