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Old 08-21-2003, 11:43 AM
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small block ID #'s...HELP!

Can anyone help me with ID #'s...I've checked everywhere and I still can't match them. It's a 350 or a 327 small block {chevy]...it has the casting clock on the passenger side above the oil pan..5 j 023 below the clock. casting on driver back of block 3970010...k1 I know there should be another number here but there isn't.... Number in front block passenger side behind alternator C61112342....last digits are correct with no letters.
If someone could shed some light here, I would really appreciate it.

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Old 08-21-2003, 12:51 PM
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From the info you provided, the best I can come up with is that your block is a 350 cast in 1978.
With the casting number you have (3970010) getting your casting date correct is critical in deciding if you have a 350 or a 327.
The number that you provided from the front of the block is a vin code and it doesn't seem correct.
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Old 08-21-2003, 06:12 PM
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Thanks for your help..I know the vin seems wrong but I have checked it a number of times..also the k1 is missing a number...how did you arrive at 1978?...Rgds, Larry
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Old 08-22-2003, 09:02 AM
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Sorry typo, I should have checked my post.
I meant 1973 based on the last number in your casting date.
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Old 08-22-2003, 12:24 PM
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I found another number under the grim...above the VIN number..K10 03 9KK...once again, I can't match this one up neither!......Larry
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Old 08-22-2003, 01:44 PM
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This is your engine assembly code..The last 3 digits are your engine suffix code.I think you might want to check to make sure the suffix is correct because I can't find a suffix that matches this.The closest I can get is CKK or TKK.
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