Chev engine identification

[Tony Smith]

Lang, where did you find that info that it is a 261 block? All the references I can come up with say it is a 1955-57 235 engine.

http://www.castingnumbers.info/site/.../18242/3837004

http://1954advance-design.com/Stoveb...g-numbers.html

[Lang]

Tony

That is interesting. It clearly shows a 235 with a Hemmings reference. I found a 261 with a Hemmings reference. I then found another chart stating that casting was a Canadian build.

It is strange that the references in your chart give two different authorities for these engines - why don't they both have the same serial numbers for that year?

It is much more likely to be a 235 as in your charts for I believe vastly more of those were built.

I will go to Hemmings Chev Talk and follow up the research to see why we get different answers. I don't think it will make any practical difference to Nathan if he is not replacing rods and pistons but it would be nice to get to the bottom of it.

What we have to remember about anything not an official factory publication is that people making these lists feed off each other and any errors quickly become fact because when you do a cross-check you will get confirmation when you find the same mistake repeated - so it must be true.

Lang

[Tony Smith]

Absolutely. I find Chevs far more confusing to find accurate truths on all the variations, when in often fact, they are not a variation at all, identical parts with different numbers.