I believe the Canadian built GMC trucks in '41 had the Chevy engine, so the 216 may be original. Pretty much any of the early Chevy or GMC 6-cylinder engines will fit without much problem.


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