The '39 had a new front end design and was the first year for the two-piece windshield. The hood sides had a single chrome strip and a single louver.
The '40 was the first year for sealed beam headlights and parking lights (mounted on the crowns of the front fenders). The grill had a wider top strip (where the Chevrolet script is). A new dash, featuring an instrument unit like on the '40 cars, was also used. In back, the bed for the '40 was lengthened to 78 inches and widenend slightly.
For a more detailed description, please see the
Illustrated Chevy Pickup Buyer\'s Guide article.
