I also found D129 on the back of the block as well.
also found the number 7 in big font and the letter S on opposing sides of the back of the motor.
CrossBreed
+1y
also just found these ontop of one another seem to be like partial vins:
VO 16T3F
C8F4 46954
bodydropped
+1y
need the numbers on the pass side right about the water pump and on the back of the block are the 2 main ones you need
CrossBreed
+1y
the numbers right above the water pump are the partial vins that i listed.
the number on the back of the block, the casting number is listed as well.
corey0814
+1y
95% of the time the 3970010 means it's a 350, but there's been 2 or 3 blocks that have thrown me for a loop. (i used to work in a machine shop for 2 years) the only way to be SURE is to measure the bore diameter. 350's have exactly 4" (unless it's been bored already)
1968 3970010 327 - - 2 A
1969-79 3970010 350 185 370 2 or 4 car, truck, Vette
CrossBreed
+1y
wow that's cool, it's a 4 bolt main and from the D129 then it's a 350 from April 12th 1979, damn i wish i knew what vehicle it actually came from...what can i do with the partial vin C8F4 46954 to figure out what this came in?