Thread: SBC Identification Numbers Decifer Help

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Yeah I got the same numbers from the heads. Its the block I'm trying to figure out with its vin/id numbers

Block date code is on bellhousing stub out behind distributor (horizontal surface). Stuff on side of block is strange, looks like it says Nov 31 1975 but that cannot be....that date didnt exist.
Stuff on pad at front is VIN plus some other stuff.....K11 04 C isnt a format that is familiar. In my reference MSA-1 book, the
K means Canada, the 11 means November but the 04 might mean 1974 or 1964.....but the C is strange...BUT the single digit suffix codes were last used in 1964 so it could jive. IF so, this means somebody cobbled together a 1964 Impala 283 L32 (2bbl) block with some 307 heads.

ok so im really looking hard at the second digit which i posted as either a letter S or 6, if that is actaully and 8, then the whole thing would make a lot more sense, given 1=Chevrolet 8=1968 B=Baltimore and then the 6 digits for the production line. any thoughts from the pics i provided if that 6/S could be an 8. i only mention it since 1968/69 engine vins were in a different format. but what then would the suffix code go to??

sorry robot i meant cast not stamped. and 283 does not jive with the cast number of the block since 3970010 was used on 1968 327 and 1969-1979 350 and 1968/69 302, and if that S/6 (second vin digit) is an 8, it would make the whole thing go together really well, since 1968 would be a 327 and the heads are 1968 307/327 motors. any thoughts on the second vin/id digit??