Standard ratios for 46 are 5.14 (36:7) for 3800, 5:43 (38:7) for 4000, and 6.17 (37:6) for 4000 (optional) and 5000 - 6000 trucks.
Ring and pinions are typically always matched with even teeth on ring with odd on pinion or vice versa. That's done so there's no repetition of tooth contact.
Here's the page for the rear axle out of the 46 Vehicle Info Kit
Kevin 1951 Chevy 3100 work truck Follow this saga in Project Journal Photos 1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car) Busting rust since the mid-60's If you're smart enough to take it apart, you darn well better be smart enough to put it back together.
