Good for Freeway driving!

Brand new 3:54 ratio ring and pinion for 1935-48 rear ends. This is the ratio that makes freeway driving nice. Pinions all have the 6 spline end. If you are using an original hollow style driveshaft with the 10 spline end a 6 x 10 adapter coupler is available which will slide on the pinion, but would have to be welded to the original driveshaft. The part number for the 6 x 10 coupler is (48-4684).