Welcome Puffie40!
Lots of resources and info available in Stovebolt, and yes even some to help with your Canadian GMC.
Here is a link that will help
decode your truck serial number. See the right side lower section for Canadian info.
Lots of other GMC Truck related info throughout that site. Here is the
Home Page to get you started.
On your engine question, there has been several other recent conversations in the
Engine Shop related to identifying Canadian GMC engines.
From this
reply post on Canadian 235 and 261 engines this info should give you a clue on where to look for the casting numbers and dates codes on your engine.
Take and post some pictures of your engine casting numbers and the "stamped" serial number machined pad directly behind the distributor. We can help better identify what you have with that info.
Looking forward to seeing more questions and pictures so we can try to help you out.
