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carguyjosh, ASE Certified Technician
Category: Chevy
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Experience:  ASE certified , 16 yrs in field
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Chevy: small block..350 4 bolt main that I have put

Resolved Question:

I have an old small block chevy engine. 350 4 bolt main that I have put in an international pick up 1954. I want to identify the engine year if possible. Block casting number(NNN) NNN-NNNN Identification number on front pad passenger side: V1212TBU CZ9144438. I think it is a 1970 or 1979.

Thanks for your help.
Submitted: 7 years ago.
Category: Chevy
Expert:  carguyjosh replied 7 years ago.

Can you please verify the casting number on the back. I have had many of the 0's look like 8's due to casting flashing left overs...


Please let me know what you see....


Thanks, Carguyjosh

Customer: replied 7 years ago.
the casting number is XXXXX over after the 3970 the best I can see is(NNN) NNN-NNNNinstead of(NNN) NNN-NNNN
Expert:  carguyjosh replied 7 years ago.

The write up on these cating number are indicating that is a 78-79


Here are the specs right from GM. Please forgive the lenght of the box, you'll need to scroll down....Thanks, Josh


397001068 - 79350 & 327145-3752&4-Bolt mains/Truck/Hi Perf

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