You can check here. http://chevy.oldcarmanualproject.com/chevyresto/40index.htm This has most of the specifications for the 1940 Chevy trucks. Should be close to that of the GMC. I have a 1940 Chevy 1 1/2 Ton Truck that my Grandfather bought brand new. It has 21,000 original miles and still runs great! I can tell you the type of bed will make a big difference on weight. Good luck!


1939 GMC AC-102 Long Bed 1/2-Ton
In the Legacy Stovebolt Gallery
More details in his DITY Bay

1940 Chevy WB Series 1.5-Ton
In the Stovebolt Gallery