Richmond 8" ring gear diameter, 1.188" pinion stem diameter, 25 spline pinion, 8620 alloy.

6.33 Motive Gear 9" ring gear diameter, 1.313" diameter pinion stem, 28 spline pinion, 8620 alloy.

3.25 9"  FORD, 28 SPLINE 8620 MOTIVE  9" ring gear diameter, 1.313" diameter pinion stem, 28 spline pinion, 8620 alloy.

Richmond Gear Fits 4 series spools. 9 3/4" ring gear diameter, 1.626" diameter pinion stem, 29 spline pinion. Manufactured from 8620 alloy.

3.73 8.8" FORD Motive 8.8" ring gear diameter, 1.626" diameter pinion stem. 30 spline pinion, 8620 alloy.

Richmond Gear. Fits 4 series carriers. 8.875” ring gear diameter, 1.625” diameter pinion, 30 spline, 8620 alloy.

Cast alumimum cover

4.10 GM 77-86 7.5" 2 SERIES GEAR (8620)Richmond Gear. Fits 2 series carriers. 7.5” ring gear diameter, 1.437” diameter pinion, 27 spline, 8620 alloy.

5.29 Motive Gear 9" ring gear diameter, 1.313" diameter pinion stem, 28 spline pinion, 8620 alloy. (1957 & up)

5.43 Motive Gear 9" ring gear diameter, 1.313" diameter pinion stem, 28 spline pinion, 8620 alloy. (1957 & up)

28 spline, for 1350 series u-joint. "B"=3-7/8" for NASCAR applications

Richmond Gear. Fits 3 series carriers. 8.875” ring gear diameter, 1.625” diameter pinion, 30 spline, 8620 alloy.