Silver Fox Dist,

While I don't have a direct answer on your engine ID question (yet) you may find some useful information about Canadian GMC engines in the Old GMC Trucks various web resource links.

More to come as I can get a bit more sleuthing done. wink

Dan

~ Dan
1951 Chevy 3 window 3100
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"My Grandpa Carl's Truck and How it Became Mine"
1966 Chevelle (Wife's Hot Rod) | 2013 Chevy Silverado (Current daily driver)
US Army MSG Retired (1977-1998) | Com Fac Maint Lead Tech Retired (1998-2021)