The Stovebolt Site Forums The Shop Area General Truck Talk Frames & Mechanicals - 1939 vs 1940 Chevy pickups?

Front axles and hubs are the same in 39 and 40. Rear axles are different reflective of the different differental. The two years have different splines on the rear axle. On 39 trucks, both axles (left and right) are the same length. On 40, one axle is a little longer than the other.