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87Bob · 12-16-2007, 09:22 AM

I have a block I am trying to confirm a decode on it can any one help? It is a four bolt main block 350 and it has the following stamped numbers:

F0413CKB & 12S253152

I get this from the books I can find:

F=Flint
04=April
13=13th day of month
C=?
K=?
B=?

1=Chevrolet
2=1972
S=St. Louis
253152=The VIN number

The CKB code decodes as 1972 350CID 165HP 2BBl going into an AB car line. The "S" decodes as a St. Louis built car which as I understand it was only the Corvette plant which built only 350 4 barrel engines. So what am I missing?

12-16-2007, 09:22 AM	#1
87Bob Registered User Join Date: Nov 2007 Location: Franklin Indiana Posts: 635	Decode engine block numbers? I have a block I am trying to confirm a decode on it can any one help? It is a four bolt main block 350 and it has the following stamped numbers: F0413CKB & 12S253152 I get this from the books I can find: F=Flint 04=April 13=13th day of month C=? K=? B=? 1=Chevrolet 2=1972 S=St. Louis 253152=The VIN number The CKB code decodes as 1972 350CID 165HP 2BBl going into an AB car line. The "S" decodes as a St. Louis built car which as I understand it was only the Corvette plant which built only 350 4 barrel engines. So what am I missing?