Don't have a lot of Canadian literature but some interesting scans.
Chevrolet 1950 the engine is referred to as a Thriftmaster but nowhere in the brochure does it give horsepower or displacement?
http://www.flickr.com/photos/advance-design_parts_co/8687960724/in/set-72157631872034068
http://www.flickr.com/photos/advance-design_parts_co/8687960754/in/set-72157631872034068/
Then in 1953 my Canadian owners manual for Chevrolet specifically mentions 235.5 displacement, 108 horsepower.
http://www.flickr.com/photos/advance-design_parts_co/8373721879/in/set-72157631872034068
Which coincides with the new for 53' Canadian brochure this is GMC but refers to the "108" engine which is now called a Loadmaster.
http://www.flickr.com/photos/advance-design_parts_co/8687960594/in/set-72157631872034068
http://www.flickr.com/photos/advance-design_parts_co/8687960666/in/set-72157631872034068/