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  #1  
Old 07-04-19, 17:38
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Nathan O'Malley Nathan O'Malley is offline
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Sorry mate I thought the casting number photo had uploaded apparently not so I’ve attached it here.

I thought I may have misread the number when I couldn’t find a 1004 it seems like a strange looking 1. If it is indeed a 261 that would be a nice little win
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File Type: jpeg 834CF623-3E72-4E56-B724-FC5900DB2488.jpeg (180.6 KB, 1 views)
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  #2  
Old 07-04-19, 22:31
Lang Lang is offline
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Yes, it is a 7 and you have a 261.

Lang
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Old 07-04-19, 23:25
Grant Bowker Grant Bowker is online now
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For more on Chev 261 identification see: http://devestechnet.com/home/thevenerable261
There's also good information through www.stovebolt.com
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Old 08-04-19, 00:12
Lang Lang is offline
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Nathan

I think you will find your numbers are on a Canadian built motor. Many of the Chevrolet casting charts found on line (not only Chevrolet but Chrysler and Ford) completely ignore the huge production that the Canadians have achieved over the years and only include USA production.

It took me several searches where your numbers did not match anything listed before finding at first a list on Hemmings then eventually a couple more confirming it is a Canadian 261.

As you are probably aware the US/Canadian company splits are smoke and mirrors BS designed to produce vehicles for the many British Commonwealth countries during a period when non-British goods suffered huge import tariffs.

If you Google a map of the old factories you will see that the US and Canadian factory workers can talk to each other across the river without raising their voices! There are hundreds of apocryphal stories about the Canadians and Americans having Made in USA or Made in Canada stamps to put on components, and indeed full vehicles, as they wandered back and forth across the border.

If someone has not written a book on the subject they should.

Lang
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  #5  
Old 08-04-19, 01:53
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Nathan O'Malley Nathan O'Malley is offline
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Thank you very much for your help!

I knew the Canadians were making a lot of stuff but I didn’t know that particular story I will look in to that that’s quite amusing
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Old 08-04-19, 05:40
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Dave Newcomb Dave Newcomb is offline
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Default 261's

Hi; Commonly 261's had II or "Captain's bars" casting marks on the block just above the starter. Also the later ones had full flow oil ports 1/2" NPT in the oil galleries on the intake side. These should be allowed to move oil... not blocked off with plugs. Local rebuilders have informed me that the Chev 6's are cam timed 6 degrees retarded and they use a 4 degree offset crankshaft key to reduce this to 2 a degree cam retard.. wakes up the engines. Canadian 261's were sometime found in Pontiacs [ Parisene?] Highest comp head is the '58 & later 848 casting. Dave
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Old 08-04-19, 15:07
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Tony Smith Tony Smith is offline
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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
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