Gudday Jase............all those pics of the FC Wagon will have our American brothers scratching their heads.

The Holden Grey engines look quite similar to the Chevrolet 6 so some people here might get a bit confused
Being a 1940, my guess would be a 216, but being the heavy truck could be running the larger engine.
It does look similar to my 216 from 1936.
Maybe check through here for info.....
http://hotrod.gregwapling.com/chev-trucks-47-55/canadian-chev.htmlLooks like a beauty......what plans do you have for it???????