Another update for everyone, just picked this up yesterday:

https://photos.app.goo.gl/1QxQ6xxYJ4w1tnHcA

Here's the details:

Engine ID: W9204502 - GM documentation says it is from a 1960 Canadian Pontiac, apparently it came out of a 1959 Pontiac.
Block: 3769717 - 261 for sure
Head: 3836848 - Yes, I know, 235 head just like the last one, but this one has higher compression!

This one turns over, so I'm thinking put the starter on it and crank to measure compression? I'm looking for a good resource (have manual) for rebuilding one of these. I'm going to start a new thread on the rebuild of this and to track the modifications that I have to make to make it compatible with my truck.

1948 Chevy Thriftmaster 3/4-Ton
Poncho "farming" in Ontario
Starting in the DITY
Continuing in the Project Journals
More images

There are only 10 types of people in this world, those who can read binary and those who can't.