V1123SAF Information

Joined
Aug 31, 2020
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Car
Chevrolet C10
Hi. I want to know which engine I have in my Chevrolet C10 1970. I found two codes: one in the front, V1123SAF.
The one in the back 5.7LG SGI
All that I know is that it is a 5.7 L 350 engine from a step van(1988-1992 maybe?)
Thanks!
 
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