Ring and Pinion

Ford 9" ring and pinion gears are available in ratios: 3.00, 3.25, 3.40, 3.50, 3.55, 3.60, 3.64, 3.70, 3.82, 3.89, 4.00, 4.10, 4.11, 4.22, 4.29, 4.30, 4.33, 4.44, 4.50, 4.56, 4.57, 4.63, 4.71, 4.77, 4.86, 5.00, 5.13, 5.14, 5.29, 5.43, 5.67, 5.83, 5.86, 6.00, 6.14, 6.20, 6.33, 6.50, 6.60, 6.80, and 7.00.