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:welcome: I know this subject has been probably beaten to death here, but I'm a little puzzled to what I have. I recently pulled a sbc from a '76 Blazer out a local yard. The Blazer had 400 emblems on it, but the motor "010" in the block casting, so I knew it was a 350 and had been swapped at sometime. It is absolutley a 350 with 4 bolt mains. I was trying to figure out the date/application codes stamped on the passenger side deck, right by the head. I can't seem to find the suffex at any of the decoder sites. This is what I have, in larger numbers closest to the head, VO725TXB, and below it, I'm assuming this was the vin of the donor vehicle, L7B178035. For what it's worth, the heads are 462624, which I believe to be 74cc. Thanx for any help!:welcome:
 

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V0725TXB = Flint,july 25, 1975,,,,,, 350cid LS9 165 HP 4 BBL conv. cab C-20 to 3500.
462624 = 1975-86 76CC chambers 1.94/1.5 350cic/400cid heads
17B= Baltimore engine plant chevy 1977
178035 is the sequenceal number of the head
 
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