engine identification Guru's
Jul 13, 2003 | 10:44 PM
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From: S.W. Ohio. . . . . . NRA Life Member
engine identification Guru's
I'm trying to nail down the engine ID for the wIfes 1973 small block.
Here are the numbers on the block:
rear of block - drivers side 3970010
front of block-passenger side- in front of head:
K03 11 CNO
also: 101163836
I've looked at the many web sites that list Chevy suffix codes, but they skip over the "CNO" suffix. Maybe it's not a Chevy engine ??????
Help!!!!
Jul 13, 2003 | 11:19 PM
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From: South Central Louisiana
St. Jude Contributor
Re: engine identification Guru's (Mike Mercury)
I come up with a 1968 327 cu in. 2 bolt main.
Possibly out of a GMC truck or a pontiac.
Jul 13, 2003 | 11:33 PM
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Re: engine identification Guru's (LAvetteman)
just about everything I find for 3970010 says it's a 350 cu in.
:confused:
Jul 13, 2003 | 11:43 PM
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From: South Central Louisiana
St. Jude Contributor
Re: engine identification Guru's (Mike Mercury)
Hmmm, you are right, actually it has that number listed for both 327 and 350.
Check it out:
http://www.nastyz28.com/sbchevy/sblock.html
Jul 13, 2003 | 11:44 PM
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St. Jude Contributor
Re: engine identification Guru's (Mike Mercury)
Mike,
I pulled out my old '66-'73 Chilton's Car Manual and cannot find a *CNO* extension on any GM car. Might possibly be a truck block. All of the *CN's* appear to be '70 engines and the closest things I could find were CNQ & CND. Both were vette blocks(350's).
(Edit)- added (350's)
[Modified by bgrice, 10:48 PM 7/13/2003]
Jul 13, 2003 | 11:52 PM
Racer
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From: Sanford Florida
Re: engine identification Guru's (LAvetteman)
3970010 is the 4" bore large journal block. 350, 327, 302. Can't help you with anything else, though. Good luck.
Jul 14, 2003 | 12:06 AM
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Re: engine identification Guru's (boredsoIstrokedit)
you guys are great and helpful. I am stumoped with the "CNO".
I've triple checked it and it certainly looks to be a CNO and not a CNQ.
The engine runs exceptionally strong and the car is a blast to drive.
But oh the mystery... :)
Jul 14, 2003 | 12:08 AM
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Re: engine identification Guru's (Mike Mercury)
The give away on this is the letter "K" at the beginning of the stamp pad. That means the block was cast at the McKinnon foundry in St. Catherines Ontario.
Not a Corvette block.
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Jul 14, 2003 | 01:00 AM
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Re: engine identification Guru's (Mike Ward)
Quote:
The give away on this is the letter "K" at the beginning of the stamp pad. That means the block was cast at the McKinnon foundry in St. Catherines Ontario.
Not a Corvette block.
Ah Ha! Mike Ward to the rescue. Any clue as to what models the McKinnon foundry made blocks for in that era?
.
[Modified by Mike Mercury, 12:01 AM 7/14/2003]