Info needed: Help to identify my engine!

[Richard Nixon]

Originally Posted by Paul Singleton

Are you sure that the bore is 3 1/2? If it’s 3 9/16 you could have a 224 engine from a Canadian GMC truck. I haven’t seen one but it is listed in my 1939/40 Canadian shop manual. It was a Canadian manufactured engine for the GMC and basically seems to be similar to the 216 but with a larger bore and aluminum pistons. It was probably made obsolete by the 235 engine introduced in 1941. If it is a Canadian built engine that may be reason for the odd casting numbers.

Paul

Hi Paul,
Yes its definitely 3 1/2 bore.

[Richard Nixon]

casting number

[Richard Nixon]

I think I might be getting somewhere! I have found PR engine numbers in this list:

https://hotrod.gregwapling.com/chev-...dian-chev.html

It shows the PR series as being assembled in Australia. If I understand it correctly my number is in a series of engines assembled in Melbourne (starting from PR3849349) This shows the engine was in a C60S (Model 2844200538M)

Grateful if someone can confirm my theory!! If right at least I know its a 216 engine block!!

[Grant Bowker]

Thank you Richard, that's the listing I was looking for.

[Lynn Eades]

Just for your info, the 235 has a 3 15/16" stroke with the 3.5" (same) bore size as the 216 cu. in.

[Paul Singleton]

I found this reference this morning, unfortunately the link is dead to the source. The post was from 2007.

The casting number 839253 appears to be a Canadian 1940-1945 Block (info I have from David Hayward). I have a unique Canadian only casting # on my 1938 216. Apparently GM Canada had 2 engine plants. The one in Oshawa produced casting numbers the same as the US. The one in the Windsor area (Walkerton maybe?) used a different casting number.

[Richard Nixon]

I finally got to the workshop to take photos of the casting numbers on the head and the date code on the block.....

[motto (RIP)]

Originally Posted by Lynn Eades

Just for your info, the 235 has a 3 15/16" stroke with the 3.5" (same) bore size as the 216 cu. in.

Hi Lynn
According to my data the Chev 235 unpressurised (WW2) engines had a 3-9/16" bore. 3-15/16" stroke is correct. These figures came from TM 10-1557 for 1-1/2 ton 4x4 truck (Known as the Yankee Joe in this country)
216 engine was 3-1/2" bore and 3-3/4" stroke.

David

[Lynn Eades]

David, you of course are correct. I should not make statements based on memory. Back to the book, I see the 216 is described as "standard engine" and the 235 as"Heavy duty engine".